@article {15368, title = {New injurious Curculionidae (Col.) from Tropical Africa.}, journal = {Bulletin of Entomological Research}, volume = {36}, number = {2}, year = {1945}, note = {[IX-1945]. Orig. ref: Marshall, G.A.K. (1945b). New injurious Curculionidae (Col.) from Tropical Africa. Bulletin of Entomological Research, 36(2): 177-180. NOTE: [IX-1945]}, pages = {177-180}, author = {Marshall, G.A.K.} } @article {15365, title = {New injurious Curculionidae from Africa (Col.).}, journal = {Bulletin of Entomological Research}, volume = {35}, number = {1}, year = {1944}, note = {[29-IV-1944]. Orig. ref: Marshall, G.A.K. (1944e). New injurious Curculionidae from Africa (Col.). Bulletin of Entomological Research, 35(1): 43-48. NOTE: [29-IV-1944]}, pages = {43-48}, author = {Marshall, G.A.K.} } @article {15346, title = {New injurious Curculionidae.}, journal = {Bulletin of Entomological Research}, volume = {29}, number = {1}, year = {1938}, note = {[1-IV-1938]. Orig. ref: Marshall, G.A.K. (1938d). New injurious Curculionidae. Bulletin of Entomological Research, 29(1): 1-8. NOTE: [1-IV-1938]}, pages = {1-8}, author = {Marshall, G.A.K.} } @article {15342, title = {New injurious Curculionidae (Col.).}, journal = {Bulletin of Entomological Research}, volume = {28}, number = {3}, year = {1937}, note = {[12-X-1937]. Orig. ref: Marshall, G.A.K. (1937b). New injurious Curculionidae (Col.). Bulletin of Entomological Research, 28(3): 467-477 + pl. XII. NOTE: [12-X-1937]}, pages = {467-477+pl.XII}, author = {Marshall, G.A.K.} } @article {15324, title = {New injurious Curculionidae (Col.).}, journal = {Bulletin of Entomological Research}, volume = {18}, number = {3}, year = {1928}, note = {[22-II-1928]. Orig. ref: Marshall, G.A.K. (1928c). New injurious Curculionidae (Col.). Bulletin of Entomological Research, 18(3): 257-266. NOTE: [22-II-1928]}, pages = {257-266}, author = {Marshall, G.A.K.} } @article {15320, title = {New injurious Curculionidae (Col.).}, journal = {Bulletin of Entomological Research}, volume = {17}, number = {3}, year = {1927}, note = {[8-III-1927]. Orig. ref: Marshall, G.A.K. (1927b). New injurious Curculionidae (Col.). Bulletin of Entomological Research, 17(3): 199-218 + pl. XIX. NOTE: [8-III-1927]}, pages = {199-218+pl.XIX}, author = {Marshall, G.A.K.} } @article {15314, title = {New Curculionidae attacking trees in India.}, journal = {Bulletin of Entomological Research}, volume = {15}, year = {1925}, note = {Orig. ref: Marshall, G.A.K. (1925b). New Curculionidae attacking trees in India. Bulletin of Entomological Research, 15: 339-344.}, pages = {339-344}, author = {Marshall, G.A.K.} } @article {15315, title = {New Curculionidae attacking cultivated plants (Col.).}, journal = {Bulletin of Entomological Research}, volume = {16}, year = {1925}, note = {Orig. ref: Marshall, G.A.K. (1925). New Curculionidae attacking cultivated plants (Col.). Bulletin of Entomological Research, 16: 67-75.}, pages = {67-75}, author = {Marshall, G.A.K.} } @article {15310, title = {Some injurious neotropical weevils (Curculionidae).}, journal = {Bulletin of Entomological Research}, volume = {13}, year = {1922}, note = {Orig. ref: Marshall, G.A.K. (1922b). Some injurious neotropical weevils (Curculionidae). Bulletin of Entomological Research, 13: 59-71 + pl. I-II.}, pages = {59-71+pl.I-II}, author = {Marshall, G.A.K.} } @article {15307, title = {Some new injurious weevils.}, journal = {Bulletin of Entomological Research}, volume = {11}, number = {3}, year = {1920}, note = {Orig. ref: Marshall, G.A.K. (1920b). Some new injurious weevils. Bulletin of Entomological Research, 11(3): 271-278 + pl. VII.}, pages = {271-278+pl.VII}, author = {Marshall, G.A.K.} } @article {15296, title = {Four new injurious weevils from Africa.}, journal = {Bulletin of Entomological Research}, volume = {5}, number = {3}, year = {1914}, note = {Orig. ref: Marshall, G.A.K. (1914). Four new injurious weevils from Africa. Bulletin of Entomological Research, 5(3): 235-239.}, pages = {235-239}, author = {Marshall, G.A.K.} } @article {15298, title = {Some injurious Indian weevils (Curculionidae) - II.}, journal = {Bulletin of Entomological Research}, volume = {6}, year = {1916}, note = {Orig. ref: Marshall, G.A.K. (1916c). Some injurious Indian weevils (Curculionidae) - II. Bulletin of Entomological Research, 6: 365-373.}, pages = {365-373}, author = {Marshall, G.A.K.} } @article {15153, title = {Population structure of the banana weevil, an introduced pest in the Canary Islands, studied by RAPD analysis}, journal = {Bulletin of Entomological Research}, volume = {97}, number = {6}, year = {2007}, month = {December}, pages = {585-590}, abstract = {The banana weevil (BW), Cosmopolites sordidus (Coleoptera: Curculionidae), is one of the most important insect pests of bananas and plantains. The mobility and the origin of BW infestations at the Canary Islands (Tenerife, La Gomera and La Palma) have been analysed using Random Amplified Polymorphic DNA (RAPD) as molecular markers. Populations from Costa Rica, Colombia, Uganda and Madeira were also included for comparison. One hundred and fifteen reproducible bands from eight primers were obtained. The level of polymorphism in the populations from the Canary Islands (40-62\%) was in the range of those found in other populations. Nei{\textquoteright}s genetic distances, pair-wise fixation index (FST) values indicate that the closest populations are Tenerife populations among themselves (Nei{\textquoteright}s genetic distance=0.054-0.100; FST=0.091-0.157) and Costa Rica and Colombia populations (Nei{\textquoteright}s genetic distance=0.049; FST=0.113). Our results indicate the existence of BW local biotypes with limited gene flow and affected by genetic drift. These results are compatible with a unique event of colonization at Tenerife; whereas, the outbreaks in La Gomera and La Palma may come from independent introductions. The Madeira population is phylogenetically and geographically closer to the Canary Islands populations, suggesting that it is the most likely source of the insects introduced in the Canary Islands.}, keywords = {Cosmopolites sordidus}, isbn = {0007-4853}, author = {Magana, C. and Beroiz, B. and Hernandez-Crespo, P. and Montes de Oca, M. and Carnego, A. and Ortego, F. and Castanera, P.} } @article {14776, title = {New injurious Curculionidae from Africa (Col.).}, journal = {Bulletin of Entomological Research}, volume = {35}, number = {1}, year = {1944}, note = {[29-IV-1944]. Orig. ref: Marshall, G.A.K. (1944e). New injurious Curculionidae from Africa (Col.). Bulletin of Entomological Research, 35(1): 43-48. NOTE: [29-IV-1944]}, pages = {43-48}, author = {Marshall, G.A.K.} } @article {14779, title = {New injurious Curculionidae (Col.) from Tropical Africa.}, journal = {Bulletin of Entomological Research}, volume = {36}, number = {2}, year = {1945}, note = {[IX-1945]. Orig. ref: Marshall, G.A.K. (1945b). New injurious Curculionidae (Col.) from Tropical Africa. Bulletin of Entomological Research, 36(2): 177-180. NOTE: [IX-1945]}, pages = {177-180}, author = {Marshall, G.A.K.} } @article {14757, title = {New injurious Curculionidae.}, journal = {Bulletin of Entomological Research}, volume = {29}, number = {1}, year = {1938}, note = {[1-IV-1938]. Orig. ref: Marshall, G.A.K. (1938d). New injurious Curculionidae. Bulletin of Entomological Research, 29(1): 1-8. NOTE: [1-IV-1938]}, pages = {1-8}, author = {Marshall, G.A.K.} } @article {14753, title = {New injurious Curculionidae (Col.).}, journal = {Bulletin of Entomological Research}, volume = {28}, number = {3}, year = {1937}, note = {[12-X-1937]. Orig. ref: Marshall, G.A.K. (1937b). New injurious Curculionidae (Col.). Bulletin of Entomological Research, 28(3): 467-477 + pl. XII. NOTE: [12-X-1937]}, pages = {467-477+pl.XII}, author = {Marshall, G.A.K.} } @article {14660, title = {New injurious Curculionidae (Col.).}, journal = {Bulletin of Entomological Research}, volume = {18}, number = {3}, year = {1928}, note = {[22-II-1928]. Orig. ref: Marshall, G.A.K. (1928c). New injurious Curculionidae (Col.). Bulletin of Entomological Research, 18(3): 257-266. NOTE: [22-II-1928]}, pages = {257-266}, author = {Marshall, G.A.K.} } @article {14656, title = {New injurious Curculionidae (Col.).}, journal = {Bulletin of Entomological Research}, volume = {17}, number = {3}, year = {1927}, note = {[8-III-1927]. Orig. ref: Marshall, G.A.K. (1927b). New injurious Curculionidae (Col.). Bulletin of Entomological Research, 17(3): 199-218 + pl. XIX. NOTE: [8-III-1927]}, pages = {199-218+pl.XIX}, author = {Marshall, G.A.K.} } @article {14646, title = {Some injurious neotropical weevils (Curculionidae).}, journal = {Bulletin of Entomological Research}, volume = {13}, year = {1922}, note = {Orig. ref: Marshall, G.A.K. (1922b). Some injurious neotropical weevils (Curculionidae). Bulletin of Entomological Research, 13: 59-71 + pl. I-II.}, pages = {59-71+pl.I-II}, author = {Marshall, G.A.K.} } @article {14650, title = {New Curculionidae attacking trees in India.}, journal = {Bulletin of Entomological Research}, volume = {15}, year = {1925}, note = {Orig. ref: Marshall, G.A.K. (1925b). New Curculionidae attacking trees in India. Bulletin of Entomological Research, 15: 339-344.}, pages = {339-344}, author = {Marshall, G.A.K.} } @article {14651, title = {New Curculionidae attacking cultivated plants (Col.).}, journal = {Bulletin of Entomological Research}, volume = {16}, year = {1925}, note = {Orig. ref: Marshall, G.A.K. (1925). New Curculionidae attacking cultivated plants (Col.). Bulletin of Entomological Research, 16: 67-75.}, pages = {67-75}, author = {Marshall, G.A.K.} } @article {14643, title = {Some new injurious weevils.}, journal = {Bulletin of Entomological Research}, volume = {11}, number = {3}, year = {1920}, note = {Orig. ref: Marshall, G.A.K. (1920b). Some new injurious weevils. Bulletin of Entomological Research, 11(3): 271-278 + pl. VII.}, pages = {271-278+pl.VII}, author = {Marshall, G.A.K.} } @article {14627, title = {Four new injurious weevils from Africa.}, journal = {Bulletin of Entomological Research}, volume = {5}, number = {3}, year = {1914}, note = {Orig. ref: Marshall, G.A.K. (1914). Four new injurious weevils from Africa. Bulletin of Entomological Research, 5(3): 235-239.}, pages = {235-239}, author = {Marshall, G.A.K.} } @article {14629, title = {Some injurious Indian weevils (Curculionidae) - II.}, journal = {Bulletin of Entomological Research}, volume = {6}, year = {1916}, note = {Orig. ref: Marshall, G.A.K. (1916c). Some injurious Indian weevils (Curculionidae) - II. Bulletin of Entomological Research, 6: 365-373.}, pages = {365-373}, author = {Marshall, G.A.K.} } @article {14337, title = {Population structure of the banana weevil, an introduced pest in the Canary Islands, studied by RAPD analysis}, journal = {Bulletin of Entomological Research}, volume = {97}, number = {6}, year = {2007}, month = {December}, pages = {585-590}, abstract = {The banana weevil (BW), Cosmopolites sordidus (Coleoptera: Curculionidae), is one of the most important insect pests of bananas and plantains. The mobility and the origin of BW infestations at the Canary Islands (Tenerife, La Gomera and La Palma) have been analysed using Random Amplified Polymorphic DNA (RAPD) as molecular markers. Populations from Costa Rica, Colombia, Uganda and Madeira were also included for comparison. One hundred and fifteen reproducible bands from eight primers were obtained. The level of polymorphism in the populations from the Canary Islands (40-62\%) was in the range of those found in other populations. Nei{\textquoteright}s genetic distances, pair-wise fixation index (FST) values indicate that the closest populations are Tenerife populations among themselves (Nei{\textquoteright}s genetic distance=0.054-0.100; FST=0.091-0.157) and Costa Rica and Colombia populations (Nei{\textquoteright}s genetic distance=0.049; FST=0.113). Our results indicate the existence of BW local biotypes with limited gene flow and affected by genetic drift. These results are compatible with a unique event of colonization at Tenerife; whereas, the outbreaks in La Gomera and La Palma may come from independent introductions. The Madeira population is phylogenetically and geographically closer to the Canary Islands populations, suggesting that it is the most likely source of the insects introduced in the Canary Islands.}, keywords = {Cosmopolites sordidus}, isbn = {0007-4853}, author = {Magana, C. and Beroiz, B. and Hernandez-Crespo, P. and Montes de Oca, M. and Carnego, A. and Ortego, F. and Castanera, P.} } @article {13307, title = {Superinfection of five Wolbachia in the alnus ambrosia beetle, Xylosandrus germanus (Blandford) (Coleoptera: Curuculionidae)}, journal = {Bulletin of Entomological Research}, volume = {100}, number = {2}, year = {2010}, month = {April}, pages = {231-239}, abstract = {Wolbachia bacteria are among the most common endosymbionts in insects. In Wolbachia research, the Wolbachia surface protein (wsp) gene has been used as a phylogenetic tool, but relationships inferred by single-locus analysis can be unreliable because of the extensive genome recombination among Wolbachia strains. Therefore, a multilocus sequence typing (MLST) method for Wolbachia, which relies upon a set of five conserved genes, is recommended. In this study, we examined whether the alnus ambrosia beetle, Xylosandrus germanus (Bland ford), is infected with Wolbachia using wsp and MLST genes. Wolbachia was detected from all tested specimens of X. gem: anus (n=120) by wsp amplification. Five distinct sequences (i.e. five alleles) for wsp were found, and labeled as wXge1-5. MLST analysis and molecular phylogeny of concatenated sequences of MLST genes identified wXge3 and wXge5 as closely-related strains. The detection rate of wXge4 and wXge1 was 100\% and 63.3\%, respectively; wXge2, wXge3 and wXge5 were detected from less than 15\% of specimens. We performed mitochondrial haplotype analyses that identified three genetic types of X. germanus, i.e. Clades A, B and C. Wsp alleles wXge1, wXge2 and wXge4 were detected in all clade A beetles; wXge2 allele was absent from Clades B and C. We concluded that (i) five wsp alleles were found from X. germanus, (ii) use of MLST genes, rather than the wsp gene, are more suited to construct Wolbachia phylogenies and (iii) wsp alleles wXge2 and wXge3/wXge5 would infect clade A and clade B/C of X. germanus, respectively.}, isbn = {0007-4853}, author = {Kawasaki, Y. and Ito, M. and Miura, K. and Kajimura, H.} } @article {12455, title = {Oviposition patterns and the supplementary role of a seed-feeding weevil, Rhyssomatus marginatus (Coleoptera: Curculionidae), in the biological control of a perennial leguminous weed, Sesbania punicea}, journal = {Bulletin of Entomological Research}, volume = {82}, year = {1992}, pages = {343-347}, abstract = {A seed-feeding curculionid, Rhyssomatus marginatus F{\r a}hraeus, was introduced into South Africa for biological control of a perennial leguminous weed, Sesbania punicea, from South America. R. marginatus has become established even though its larval food source, seeds in ripening pods, is severely depleted by another biological control agent, an apionid, Trichapion lativentre (Beguin Billecocq), which destroys nearly all the flower-buds produced by the plants and reduces seed-set by 98\% on average. In spite of this indirect competition, R. marginatus destroys up to 88\% of the remaining seeds that develop on S. punicea, regardless of host plant location. Detrimental intraspecific interactions between larvae of R. marginatus are minimized, and the utilization of a depleted food source is optimized, through meticulous selection of oviposition sites by the female weevils. Although numerically inferior, R. marginatus is an important supplementary agent to T. lativentre and together the two species of weevils have almost arrested the reproductive potential of S. punicea.}, author = {Hoffmann, J.H. and Moran, V.C.} } @article {11566, title = {A taxonomic revision, biology and morphology of immature stages of the Entedon sparetus species group (Hymenoptera: Eulophidae), egg-larval endoparasitoids of weevils (Coleoptera: Curculionidae)}, journal = {Bulletin of Entomological Research}, volume = {97}, number = {2}, year = {2007}, month = {April}, pages = {139-166}, abstract = {The sparetus-group of Entedon is revised. Six species are recognized for the group, including one new species, E. lucasi Gumovsky sp. n., which is described from Algeria. All species are either diagnosed or described, and illustrated, and new distribution records are provided. An illustrated dichotomous key to all species of the group is given. Biology of two species, E. thomsonianus Erdos and E. sparetus Walker, is studied in detail: both species proved to be egg-larval parasitoids of stem-boring weevils, Lixus cardui Olivier on the scotch thistle Onopordum acanthium and Gymnetron asellus (Gravenhorst) on mullein Verbascum sp., respectively. The morphology of larval stages and peculiarities of parasitoid-host relationships are described. Possible benefits of egg-larval parasitism for Entedon species are discussed.}, keywords = {Gymnetron asellus, Lixus cardui}, isbn = {0007-4853}, author = {Gumovsky, A. V.} } @article {11502, title = {Flight take-off and walking behavior of insecticide-susceptible and -resistant strains of Sitophilus zeamais exposed to deltamethrin}, journal = {Bulletin of Entomological Research}, volume = {99}, number = {4}, year = {2009}, month = {August}, pages = {393-400}, abstract = {Insects have evolved a variety of physiological and behavioral responses to various toxins in natural and managed ecosystems. However, insect behavior is seldom considered in insecticide studies although insects are capable of changing their behavior in response to their sensory perception of insecticides, which may compromise insecticide efficacy. This is particularly serious for insect pests that are physiologically resistant to insecticides since insecticide avoidance may further compromise their management. Locomotion plays a major role determining insecticide exposure and was, therefore, considered in investigating the behavioral responses of male and female adult insects from an insecticide-susceptible and two insecticide-resistant strains of the maize weevil Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae), a major pest of stored cereals. Different dose-dependent behavioral responses were expected among strains with behavioral resistance less likely to occur in physiologically resistant insects since they are able to withstand higher doses of insecticide. The behavioral responses to deltamethrin-sprayed surfaces differed among the maize weevil strains. Such responses were concentration-independent for all of the strains. Stimulus-independent behavioral resistance was unrelated to physiological resistance with one resistant strain exhibiting higher rates of flight take-off and the other resistant strain exhibiting lower flight take-off. Female mobility was similar for all strains, unlike male mobility. Males of each strain exhibited a pattern of mobility following the same trend of flight take-off. Behavioral patterns of response to insecticide are, therefore, variable among strains, particularly among insecticide-resistant strains, and worth considering in resistance surveys and management programs.}, keywords = {Sitophilus zeamais}, isbn = {0007-4853}, author = {Guedes, N. M. P. and Guedes, R. N. C. and Ferreira, G. H. and Silva, L. B.} } @article {11307, title = {Argentine stem weevil (Listronotus bonariensis, Coleoptera: Curculionidae) population dynamics in Canterbury, New Zealand dryland pasture}, journal = {Bulletin of Entomological Research}, volume = {101}, number = {3}, year = {2011}, month = {Jun}, pages = {295-303}, abstract = {The Argentine stem weevil (Listronotus bonariensis) was an economically important pest in New Zealand pastures until the release of the parasitoid Microctonus hyperodae. This contribution uses historical data to investigate the regulation of the pest populations prior to, and somewhat during, the establishment of this parasitoid in dryland Canterbury, New Zealand. Thus, a significant goal of this study is to provide an L. bonariensis population dynamics baseline for any future work that aims to analyse the full effects of M. hyperodae on the weevil, now that equilibrium with the weevil host has been reached. The population dynamics of L. bonariensis, based on a life-table approach, were investigated using data collected regularly for eight years from populations in Canterbury, New Zealand. The key factor affecting end-of-season L. bonariensis density was found to be variation in second generation fourth instar prepupal and pupal mortality. This may have been caused by arrested development and ongoing mortality resulting from the onset of cooler autumnal conditions. A compensatory response was found in recruitment to the second summer weevil generation, whereby the realised fecundity of the emergent first summer generation of weevils was found to be negatively related to the density of adult weevils per ryegrass tiller. This is the first time that this has been found via long-term population analysis of L. bonariensis, although indications of this have been found elsewhere in caging, pot and small plot experiments. In this study, the effect of the parasitoid biocontrol agent Microctonus hyperodae on L. bonariensis population dynamics was unclear, as the analysis covered a period when the parasitoid Microctonus hyperodae was introduced and still establishing. It does, however, raise important questions for future analysis in terms of the interaction between parasitism and unrealised fecundity. The results in this contribution also highlighted regional differences. Overwintering mortality of adult weevils in Canterbury was constant between years, whilst earlier studies in the North Island Waikato region indicated this mortality was density dependent. In addition, the availability of tillers in endophyte-free ryegrass pastures in Canterbury had no influence on egg and early-instar larval survival, which contrasts with the finding from endophytic Waikato pastures.}, keywords = {Listronotus bonariensis}, isbn = {0007-4853}, author = {Goldson, S.L. and Barron, M. C. and Kean, J. M. and van Koten, C.} } @article {11150, title = {The bionomics of an invasive species Sitona lepidus during its establishment in New Zealand}, journal = {Bulletin of Entomological Research}, volume = {100}, number = {3}, year = {2010}, month = {Jun}, pages = {339-346}, abstract = {The egg, larval, pupal and adult abundance of the clover root weevil Sitona lepidus Gyllenhal (Coleoptera: Curculionidae) was monitored at three sites for the first ten years following the discovery of this exotic pest in the Waikato region of New Zealand. The species went through an initial boom and bust cycle at two sites, with populations reaching up to 1800 larvae m-2. Thereafter, winter larval populations were relatively stable, ranging between 450-750 m-2. Unlike in the Northern Hemisphere, S. lepidus was found to have two generations a year in the Waikato region of New Zealand. Pasture white clover content at the time of peak adult numbers was positively related to the subsequent peak larval populations for each generation. The factors contributing to the emergence of S. lepidus as one of the most important pasture pests in New Zealand are discussed.}, keywords = {Sitona lepidus}, isbn = {0007-4853}, author = {Gerard, P. J. and Goldson, S.L. and Hardwick, S. and Addison, P. J. and Willoughby, B. E.} } @article {10904, title = {Competition and intraguild predation between the braconid parasitoid Bracon hylobii and the entomopathogenic nematode Heterorhabditis downesi, natural enemies of the large pine weevil, Hylobius abietis}, journal = {Bulletin of Entomological Research}, volume = {99}, number = {2}, year = {2009}, month = {April}, pages = {151-161}, abstract = {In biological control programmes introduced natural enemies compete with indigenous enemies for hosts and may also engage in intraguild predation when two species competing for the same prey attack and consume one another. The large pine weevil, Hylobius abietis L. (Coleoptera: Curculionidae), is an important pest of coniferous reforestation in Europe. Among its natural enemies, the parasitoid Bracon hylobii Ratz. (Hymenoptera: Braconidae) and entomopathogenic nematodes have potential as biological control agents. Both parasitoid and nematodes target the weevil larvae and, hence, there is potential for competition or intraguild predation.In this study, we examine the interaction of B. hylobii with the nematode Heterorhabditis downesi Stock, Griffin and Burnell (Nematode: Heterorhabditidae), testing the susceptibility of larvae, pupae and adults of B. hylobii to H. downesi and whether female parasitoids discriminate between nematode-infected and uninfected weevils for oviposition. In choice tests, when weevils were exposed to nematodes 1-7 days previously, no B. hylobii oviposited on nematode-infected weevil larvae. Up to 24 h, healthy weevils were twice as likely as nematode-infected ones to be used for oviposition. Bracon hylobii females did not adjust clutch size; nematode-infected hosts were either rejected or the parasitoid laid a full clutch of eggs on them.When nematodes were applied to the parasitoid feeding on weevil larvae, the nematodes parasitized the parasitoid larvae, there was a reduction in cocoon formation and fewer cocoons eclosed. Eclosion rate was not reduced when nematodes were applied to fully formed cocoons, but nearly all of the emerging adults were killed by nematodes.}, keywords = {Hylobius abietis}, isbn = {0007-4853}, author = {Everard, A. and Griffin, C. T. and Dillon, A. B.} } @article {10662, title = {Lower temperature thresholds for oviposition and egg hatching of the Red Palm Weevil, Rhynchophorus ferrugineus (Coleoptera: Curculionidae), in a Mediterranean climate}, journal = {Bulletin of Entomological Research}, volume = {102}, number = {1}, year = {2012}, month = {February}, pages = {97-102}, abstract = {The red palm weevil, Rhynchophorus ferrugineus Olivier (Coleoptera: Curculionidae), is an economically important pest of palms worldwide. To better understand the phenology of R. ferrugineus populations in the Mediterranean basin, the objective of the present work has been to estimate the effect of temperatures within the range 10[long dash]25[degree]C on the reproductive parameters of R. ferrugineus and to determine its lower temperature thresholds for oviposition and egg hatching. Our results confirm that oviposition in R. ferrugineus is strongly affected by temperature. Lower thresholds for oviposition and egg hatching (15.45[degree] and 13.95[degree]C, respectively) are below the mean monthly temperatures registered in winter in most of the northern shore of the Mediterranean basin. Under these circumstances, new palm infestations would be difficult during most of the winter. These results should be taken into account when planning some palm management practices, such as pruning or pesticide treatments, in areas under a Mediterranean climate.}, keywords = {Rhynchophorus ferrugineus}, isbn = {0007-4853}, author = {Dembilio, O. and Tapia, G. V. and Tellez, M. M. and Jacas, J. A.} } @article {10658, title = {Basic bio-ecological parameters of the invasive Red Palm Weevil, Rhynchophorus ferrugineus (Coleoptera: Curculionidae), in Phoenix canariensis under Mediterranean climate}, journal = {Bulletin of Entomological Research}, volume = {101}, number = {2}, year = {2011}, month = {Apr}, pages = {153-163}, abstract = {The invasive red palm weevil, Rhynchophorus ferrugineus Olivier (Coleoptera, Curculionidae), is one of the most destructive pests of palms in the world. Since its detection in the Mediterranean Basin, the ornamental Phoenix canariensis Hort. ex Chabaud has become its main host. This study was aimed at determining the life cycle of R. ferrugineus in live P. canariensis palms. Egg lethal temperature threshold and thermal constant were determined in the laboratory and resulted in 13.1[degree]C and 40.4 degree days (DD), respectively. A semi field assay was carried out in a mesh enclosure where living P. canariensis palms were artificially infested with neonate larvae at one-month intervals from June 2008 to May 2009 under natural conditions. Infested palms were dissected at different time intervals. Maximum mortality rates for R. ferrugineus were observed for palms infested either in December or January (100\%), whereas those infested from April through September showed maximum survival rates. Mean monthly temperatures below 10.3[degree]C were lethal for neonate larvae, as 4.5[degree]C were for older immature stages. All recovered larvae could be classed according to one of 13 instars. A thermal constant of 666.5 DD was estimated for complete larval development. Pupal develoment required an additional 282.5 DD. Based on these results and on the temperatures from 46 climatic stations selected in the Iberian Peninsula, less than one generation per year can be expected in areas with mean annual temperature below 15[degree]C and more than two where mean annual temperature is above 19[degree]C.}, keywords = {Rhynchophorus ferrugineus}, isbn = {0007-4853}, author = {Dembilio, O. and Jacas, J. A.} } @article {9977, title = {Investigating preference-performance relationships in aboveground-belowground life cycles: a laboratory and field study with the vine weevil (Otiorhynchus sulcatus)}, journal = {Bulletin of Entomological Research}, volume = {102}, number = {1}, year = {2012}, month = {February}, pages = {63-70}, abstract = {The preference-performance hypothesis has principally considered insect herbivores with aboveground lifecycles, although the hypothesis could be equally relevant to insects with life stages occurring both aboveground and belowground. Moreover, most studies have focussed on either laboratory or field experiments, with little attempt to relate the two. In this study, the preference-performance hypothesis was examined in an aboveground-belowground context in the laboratory using the vine weevil (Otiorhynchus sulcatus (F.)) (Coleoptera: Curculionidae) and two cultivars of red raspberry (Rubus idaeus), Glen Rosa and Glen Ample. A two-year field study (2008[long dash]2009) was also undertaken to characterise the population dynamics of adult weevils on the two raspberry cultivars. Larval performance (abundance and mass) differed significantly between Glen Rosa and Glen Ample, with Glen Rosa resulting in 26\% larger but 56\% fewer larvae compared to Glen Ample. Larval abundances were significantly and positively correlated with root nitrogen and magnesium concentrations, but negatively correlated with root iron. However, concentrations of these minerals were not significantly different in the two cultivars. Adult weevils did not preferentially select either of the two cultivars for egg laying (laying 3.08 and 2.80 eggs per day on Glen Ample and Glen Rosa, respectively), suggesting that there was no strong preference-performance relationship between adult vine weevils and their belowground offspring. Field populations of adult vine weevils were significantly higher on Glen Ample than Glen Rosa, which may reflect the higher larval survival on Glen Ample observed in laboratory experiments.}, isbn = {0007-4853}, author = {Clark, K. E. and Hartley, S. E. and Brennan, R. M. and MacKenzie, K. and Johnson, S. N.} } @article {9952, title = {Chemical cues from the coffee berry borer influence the locomotory behaviour of its bethylid parasitoids}, journal = {Bulletin of Entomological Research}, volume = {100}, number = {6}, year = {2010}, month = {December}, pages = {707-714}, abstract = {Cephalonomia stephanoderis and Prorops nasuta are two bethylid wasps released into several Latin American countries for classical biological control of coffee berry borer, Hypothenemus hampei, the most serious insect pest of coffee worldwide. Recent studies on the host location behaviour of these parasitoids have shown that females of both species are attracted to volatile compounds released by immature stages and dust and frass of H. hampei. In this study, we investigated the role of the contact chemicals present in dust and frass of H. hampei on the behaviour of P. nasuta and C. stephanoderis females. Parasitoids remained longer on patches treated with methanol extracts than on acetone and hexane extracts. Females spent more time on the patch treated with the methanol extract of dust and frass than on the patches treated with the methanol extract of dry coffee and methanol control. The concentration of the methanol extracts from dust and frass influenced the locomotory activity of parasitoids of both species. The time that females spent in the patch tended to increase as the concentration of the methanol extracts increased. A further experiment aimed to identify other behavioural descriptors and gain a deeper understanding of the mechanisms underlying the response of parasitoids to methanol extracts was performed. Females of both species spent more time, covered more distance, turned more (per unit time and per unit distance), and decreased their speed when they contacted patches treated with methanol extracts in comparison to patches treated with methanol control.}, keywords = {Hypothenemus hampei}, isbn = {0007-4853}, author = {Chiu-Alvarado, P. and Valle-Mora, J. and Rojas, J. C.} } @article {9922, title = {Flight of the Chinese white pine beetle (Coleoptera: Scolytidae) in relation to sex, body weight and energy reserve}, journal = {Bulletin of Entomological Research}, volume = {101}, number = {1}, year = {2011}, month = {February}, pages = {53-62}, abstract = {The flight distance, flight time and individual flight activities of males and females of Dendroctonus armandi were recorded during 96-h flight trials using a flight mill system. The body weight, glucose, glycogen and lipid content of four treatments (naturally emerged, starved, phloem-fed and water-fed) were compared among preflight, post-flight and unflown controls. There was no significant difference between males and females in total flight distance and flight time in a given 24-h period. The flight distance and flight time of females showed a significant linear decline as the tethered flying continued, but the sustained flight ability of females was better than that of males. The females had higher glycogen and lipid content than the males; however, there was no significant difference between both sexes in glucose content. Water-feeding and phloem-feeding had significant effects on longevity, survival days and flight potential of D. armandi, which resulted in longer feeding days, poorer flight potential and lower energy substrate content. Our results demonstrate that flight distances in general do not differ between water-fed and starved individuals, whereas phloem-fed females and males fly better than water-fed and starved individuals.}, keywords = {Dendroctonus armandi}, isbn = {0007-4853}, author = {Chen, H. and Li, Z. and Bu, S. H. and Tian, Z. Q.} } @article {9389, title = {Adult fecundity, host plant preferences, field activity and parasitism in the leaf weevil Phyllobius pyri (L.) (Coleoptera: Curculionidae)}, journal = {Bulletin of Entomological Research}, volume = {100}, number = {3}, year = {2010}, month = {Jun}, pages = {303-314}, abstract = {Adults of the leaf weevil Phyllobius pyri (L.) (Coleoptera: Curculionidae) feed on a wide variety of broadleaved trees and occasionally cause severe defoliation in newly established farm woodlands. There is little information, however, on the relative susceptibility of different tree species to damage or on the habitat associations of adults and larvae of P. pyri, which might indicate the conditions that predispose trees to attack. Captures of adult P. pyri in emergence and flight traps in the current study indicated population densities in grassland of 0.5-6.4 adults per m2 at emergence but higher densities up to 13.5 per m2 in young pine plantations, where there was a mixture of grassy patches and young, naturally regenerating birch trees. The close proximity of larval food resources (grass roots) and a favoured adult host-plant, which also occurs in young farm woodlands, provided ideal conditions for P. pyri and allowed high population densities to develop. Feeding and performance experiments indicated that cherry, birch, oak and hornbeam were most susceptible to P. pyri, whereas field maple, hawthorn, rowan, lime and especially ash were resistant. Adult female P. pyri emerged in May reproductively immature and fed on tree foliage for 15.9[plus or minus]0.9 days before laying their first batch of eggs. Adults lived for 33.3[plus or minus]1.5 days, on average, and females laid a mean of 191.9[plus or minus]34.5 eggs (maximum = 589) during their lifetime. Eggs hatched after 16-20 days. During 2003 and 2004, 11-16\% of adult P. pyri were parasitised by Pygostylus falcatus (Hymenoptera: Braconidae) and 19-29\% were parasitised by Rondonia fasciata (Diptera: Tachinidae).}, isbn = {0007-4853}, author = {Billiald, H. E. and Straw, N. A. and Stewart, A. J. A.} } @article {9232, title = {A review of the species of Mesopolobus (Chalcidoidea: Pteromalidae) associated with Ceutorhynchus (Coleoptera: Curculionidae) host-species of European origin}, journal = {Bulletin of Entomological Research}, volume = {97}, number = {4}, year = {2007}, month = {August}, pages = {387-397}, abstract = {Four species of Mesopolobus Westwood were reared as parasitoids of Ceutorhynchinae hosts in Europe during surveys in 2000-2004. An illustrated key is given to differentiate the four species, M. gemellus Baur \& Muller sp. n., M. incultus (Walker), M. morys (Walker) and M. trasullus (Walker), plus M. moryoides Gibson, a parasitoid of the cabbage seedpod weevil, Ceutorhynchus obstrictus (Marsham), in North America. Pteromalus clavicornis Walker is recognized as a junior synonym of M. incultus syn. n., and Pteromalus berecynthos Walker (also a junior synonym of M. incultus) is considered a correct original spelling. For Disema pallipes Forster (a junior synonym of Mesopolobus morys), a lectotype is designated. Mesopolobus morys is for the first time accurately associated with the seed weevil Ceutorhynchus turbatus (Schultze), a potential agent for classical biological control, of hoary cress, Lepidium draba L. (Brassicaceae), in North America. Mesopolobus gemellus is associated with another seed weevil, Ceutorhynchus typhae (= C.floralis) (Herbst), in pods of shepherd{\textquoteright}s purse, Capsella bursa-pastoris (L.) Medik. (Brassicaceae). Implications of the host-parasitoid associations are discussed relative to the introduction of species to North America for classical biological control of the cabbage seedpod weevil.}, keywords = {Ceutorhynchus obstrictus}, isbn = {0007-4853}, author = {Baur, H. and Muller, F. J. and Gibson, G. A. P. and Mason, P. G. and Kuhlmann, U.} } @article {9047, title = {Enhanced activity of carbohydrate- and lipid-metabolizing enzymes in insecticide-resistant populations of the maize weevil, Sitophilus zeamais}, journal = {Bulletin of Entomological Research}, volume = {98}, number = {4}, year = {2008}, month = {August}, pages = {417-424}, type = {Article}, abstract = {Insecticide resistance is frequently associated with fitness disadvantages in the absence of insecticides. However, intense past selection with insecticides may allow the evolution of fitness modifier alleles that mitigate the cost of insecticide resistance and their consequent fitness disadvantages. Populations of Sitophilus zeamais with different levels of susceptibility to insecticides show differences in the accumulation and mobilization of energy reserves. These differences may allow S. zeamais to better withstand toxic compounds without reducing the beetles{\textquoteright} reproductive fitness. Enzymatic assays with carbohydrate- and lipid-metabolizing enzymes were, therefore, carried out to test this hypothesis. Activity levels of trehalase, glycogen phosphorylase, lipase, glycosidase and amylase were determined in two insecticide-resistant populations showing (resistant cost) or not showing (resistant no-cost) associated fitness cost, and in an insecticide-susceptible population. Respirometry bioassays were also carried out with these weevil populations. The resistant no-cost population showed significantly higher body mass and respiration rate than the other two populations, which were similar. No significant differences in glycogen phosphorylase and glycosidase were observed among the populations. Among the enzymes studied, trehalase and lipase showed higher activity in the resistant cost population. The results obtained in the assays with amylase also indicate significant differences in activity among the populations, but with higher activity in the resistant no-cost population. The inverse activity trends of lipases and amylases in both resistant populations, one showing fitness disadvantage without insecticide exposure and the other not showing it, may underlay the mitigation of insecticide resistance physiological costs observed in the resistant no-cost population. The higher amylase activity observed in the resistant no-cost population may favor energy storage, preventing potential trade-offs between insecticide resistance mechanisms and basic physiological processes in this Population, unlike what seems to take place in the resistant cost population.}, keywords = {Sitophilus zeamais}, isbn = {0007-4853}, author = {Araujo, R. A. and Guedes, R. N. C. and Oliveira, M. G. A. and Ferreira, G. H.} } @article {6914, title = {RAPD and mitochondrial DNA analysis of the soybean stalk weevil, Sternechus subsignatus (Coleoptera: Curculionidae).}, journal = {Bulletin of Entomological Research}, volume = {98}, number = {5}, year = {2008}, pages = {475-481}, chapter = {475}, author = {Sosa-Gomez, D.R. and Coronel, N. and Binneck, E. and Zucchi, M.I. and Rosado-Neto, G.H.} } @article {5641, title = {The diversity of beetle assemblages in different habitat types in Sabah, Malaysia}, journal = {Bulletin of Entomological Research}, volume = {90}, year = {2000}, pages = {475{\textendash}496}, abstract = {The diversity of beetle assemblages in different habitat types (primary forest,
logged forest, acacia plantation and oil palm plantation) in Sabah, Malaysia was
investigated using three different methods based on habitat levels (Winkler
sampling, flight-interception-trapping and mist-blowing). The overall diversity
was extremely high, with 1711 species recorded from only 8028 individuals and 81
families (115 family and subfamily groups). Different degrees of environmental
changes had varying effects on the beetle species richness and abundance, with oil
palm plantation assemblage being most severely affected, followed by acacia
plantation and then logged forest. A few species became numerically dominant in
the oil palm plantation. In terms of beetle species composition, the acacia fauna
showed much similarity with the logged forest fauna, and the oil palm fauna was
very different from the rest. The effects of environmental variables (number of
plant species, sapling and tree densities, amount of leaf litter, ground cover, canopy
cover, soil pH and compaction) on the beetle assemblage were also investigated.
Leaf litter correlated with species richness, abundance and composition of
subterranean beetles. Plant species richness, tree and sapling densities correlated
with species richness, abundance and composition of understorey beetles while
ground cover correlated only with the species richness and abundance of these
beetles. Canopy cover correlated only with arboreal beetles. In trophic structure,
predators represented more than 40\% of the species and individuals.
Environmental changes affected the trophic structure with proportionally more
herbivores (abundance) but fewer predators (species richness and abundance) in
the oil palm plantation. Biodiversity, conservation and practical aspects of pest
management were also highlighted in this study.}, keywords = {Rhabdoscelus maculatus}, url = {http://journals.cambridge.org/download.php?file=\%2FBER\%2FBER90_06\%2FS0007485300000602a.pdf\&code=2c28f02ea5036aab417e3dfa463249ff}, author = {Chung, A. Y. C. and Eggleton, P. and Speight, M. R. and Hammond, P. M. and Chey, V. K.} } @article {2181, title = {Factors affecting parasitism by Microctonus aethiopoides Loan (Hymenoptera: Braconidae) and parasitoid development in natural and novel host species.}, journal = {Bulletin of Entomological Research}, volume = {91}, year = {2001}, note = {ORIG-Title-Journal-Volume-Combination: Factors affecting parasitism by Microctonus aethiopoides Loan (Hymenoptera: Braconidae) and parasitoid development in natural and novel host species. Bulletin of Entomological Research 91}, pages = {245-253}, author = {Barratt, B. I. P. and Johnstone, P. D.} } @article {2079, title = {Smicronyx species (Coleoptera: Curculionidae), economically important seed predators of Witchweeds (Striga spp.) (Scrophulariaceae) in sub-Saharan Africa.}, journal = {Bulletin of Entomological Research}, volume = {87}, year = {1997}, note = {ORIG-Title-Journal-Volume-Combination: S micronyx species (Coleoptera: Curculionidae), economically important seed predators of Witchweeds (Striga spp.)(Scrophulariaceae) in sub-Saharan Africa. Bulletin of Entomological Research 87}, pages = {3-17}, author = {Anderson, D.M. and Cox,M.L.} } @article {1918, title = {The diversity of beetle assemblages in different habitat types in Sabah, Malaysia}, journal = {Bulletin of Entomological Research}, volume = {90}, year = {2000}, pages = {475{\textendash}496}, chapter = {475}, abstract = {The diversity of beetle assemblages in different habitat types (primary forest,
logged forest, acacia plantation and oil palm plantation) in Sabah, Malaysia was
investigated using three different methods based on habitat levels (Winkler
sampling, flight-interception-trapping and mist-blowing). The overall diversity
was extremely high, with 1711 species recorded from only 8028 individuals and 81
families (115 family and subfamily groups). Different degrees of environmental
changes had varying effects on the beetle species richness and abundance, with oil
palm plantation assemblage being most severely affected, followed by acacia
plantation and then logged forest. A few species became numerically dominant in
the oil palm plantation. In terms of beetle species composition, the acacia fauna
showed much similarity with the logged forest fauna, and the oil palm fauna was
very different from the rest. The effects of environmental variables (number of
plant species, sapling and tree densities, amount of leaf litter, ground cover, canopy
cover, soil pH and compaction) on the beetle assemblage were also investigated.
Leaf litter correlated with species richness, abundance and composition of
subterranean beetles. Plant species richness, tree and sapling densities correlated
with species richness, abundance and composition of understorey beetles while
ground cover correlated only with the species richness and abundance of these
beetles. Canopy cover correlated only with arboreal beetles. In trophic structure,
predators represented more than 40\% of the species and individuals.
Environmental changes affected the trophic structure with proportionally more
herbivores (abundance) but fewer predators (species richness and abundance) in
the oil palm plantation. Biodiversity, conservation and practical aspects of pest
management were also highlighted in this study. }, keywords = {Rhabdoscelus maculatus}, url = {http://journals.cambridge.org/download.php?file=\%2FBER\%2FBER90_06\%2FS0007485300000602a.pdf\&code=2c28f02ea5036aab417e3dfa463249ff}, author = {Chung, A. Y. C. and Eggleton, P. and Speight, M. R. and Hammond, P. M. and Chey, V. K.} }