Messing, R., A. Alyokhin, L. Quan, C. Yiqun, and F. Xiongxi. 2003. Parasitoids of Sophonia leafhoppers in Southern China. Proceedings of the Hawaiian Entomological Society 36: 111-114.

Abundance Factors /

Leafhoppers and their parasitoids in Fuzhou, China, were sampled from 1998 to 2001 in order to find their natural enemies with potential for biological control of Sophonia rufofascia in Hawaii. Eleven parasitoid species were found, of which Chaetomymar sp. (Mymaridae) were the most abundant, accounting for 65.8% of total parasitism. Parasitism of leafhopper eggs in guava orchards averaged 61.9% […]

Messing, R., A. Alyokhin, L. Quan, C. Yiqun, and F. Xiongxi. 2003. Parasitoids of Sophonia leafhoppers in Southern China. Proceedings of the Hawaiian Entomological Society 36: 111-114. Read More »

Alyokhin, A. and G. Sewell. 2003. On-soil movement and plant colonization by walking wingless morphs of three aphid species (Homoptera: Aphididae) in greenhouse arenas. Environmental Entomology. 32: 1393-1398.

Abundance Factors /

Potato aphid (Macrosiphum euphorbiae (Thomas)), green peach aphid (Myzus persicae (Sulzer)), and buckthorn aphid (Aphis nasturtii Kaltenbach) are polyphagous herbivores that commonly colonize potato plants (Solanum tuberosum L.) in Northeastern U.S. and Canada. Their movement influences spatial and temporal patterns of viral spread within potato fields. We investigated aphid movement between potato plants early in the season, with a

Alyokhin, A. and G. Sewell. 2003. On-soil movement and plant colonization by walking wingless morphs of three aphid species (Homoptera: Aphididae) in greenhouse arenas. Environmental Entomology. 32: 1393-1398. Read More »

Alyokhin, A. V. and R.H. Messing. 2003. Parasitism of Hawaiian non-frugivorous fruit flies (Diptera: Tephritidae) by an exotic parasitoid Eurytoma tephritidis Fullaway (Hymenoptera: Eurytomidae). Proceedings of the Hawaiian Entomological Society 36: 29-37.

Abundance Factors /

Eurytoma tephritidis Fullaway (Hymenoptera: Eurytomidae) is an exotic solitary larval endoparasitoid that has been recorded to parasitize gall-forming tephritids in Hawaii. We surveyed E. tephritidis parasitism of Tetreuaresta obscuriventris (Loew.), Ensina sonchi (L.), Acinia picturata (Snow), Procecidochares utilis Stone, P. alani Steyskal, Trupanea sp. nr. cratericola, and T. dubautiae (Bryan) (Diptera: Tephritidae) on four major Hawaiian islands. No wasps emerged from T. obscuriventris and E. sonchi. Among other species, percent parasitism ranged from less than 1%

Alyokhin, A. V. and R.H. Messing. 2003. Parasitism of Hawaiian non-frugivorous fruit flies (Diptera: Tephritidae) by an exotic parasitoid Eurytoma tephritidis Fullaway (Hymenoptera: Eurytomidae). Proceedings of the Hawaiian Entomological Society 36: 29-37. Read More »

Boiteau, G., A. Alyokhin, and D. N. Ferro. 2003. The Colorado potato beetle in movement. Canadian Entomologist 135: 1-22.

Reviews /

The recent introduction of the concept of refuge areas for the management of the Colorado potato beetle, Leptinotarsa decemlineata (Say), on resistant potato highlighted the existence of important gaps in our knowledge and understanding of this pest’s dispersal. The objective of this review was to present a synthetic view of the information available for the benefit of

Boiteau, G., A. Alyokhin, and D. N. Ferro. 2003. The Colorado potato beetle in movement. Canadian Entomologist 135: 1-22. Read More »

Alyokhin, A. V. , R.H. Messing, and and J. J. Duan. 2002. Infestation of Elephantopus mollis (Asteraceae) flowerheads by Tetreuaresta obscuriventris (Diptera: Tephritidae) on Kauai, Hawaiian Islands. Entomological News 113: 247-252.

Abundance Factors /

Populations of successfully established exotic organisms rarely reach noticeable densities in their new environment, and little information is currently available on the population dynamics of the exotic insects released on the Hawaiian islands. In the present study, we surveyed present incidence of a tephritid fly of New World origin, Tetreuaresta obscuriventris (Loew.), on the island of Kauai.

Alyokhin, A. V. , R.H. Messing, and and J. J. Duan. 2002. Infestation of Elephantopus mollis (Asteraceae) flowerheads by Tetreuaresta obscuriventris (Diptera: Tephritidae) on Kauai, Hawaiian Islands. Entomological News 113: 247-252. Read More »

Alyokhin, A., G. Sewell, and E. Groden. 2002. Aphid abundance and potato virus Y transmission in imidacloprid-treated potatoes. American Journal of Potato Research 79: 255-262.

Abundance Factors, Insecticides, Viruses /

Imidacloprid is a commonly used insecticide that is highly effective in controlling insect pests of potato. The relatively high cost of imidacloprid provides commercial growers with a strong incentive to reduce field application rates. In the present study, we investigated the impact of reduced imidacloprid rates on aphid abundance and potato virus Y transmission within

Alyokhin, A., G. Sewell, and E. Groden. 2002. Aphid abundance and potato virus Y transmission in imidacloprid-treated potatoes. American Journal of Potato Research 79: 255-262. Read More »

Yang, P., D. Foote, A. Alyokhin, L. Lenz, and R. Messing. 2002. Distribution and abundance of mymarid parasitoids (Hymenoptera: Mymaridae) of the two-spotted leafhopper (Homoptera: Cicadellidae) in Hawaii. Biological Control 23: 237-244.

Abundance Factors /

The abundance of mymarid parasitoids attacking the two-spotted leafhopper (Sophonia rufofascia [Kuoh and Kuoh]), a polyphagous pest recently adventive to Hawaii, was monitored using yellow sticky cards deployed in several areas on the islands of Kauai and Hawaii. The yellow cards captured Chaetomymar sp. nr bagicha Narayanan, Subba Rao, & Kaur and Schizophragma bicolor (Dozier), both adventive species; as well as Polynema sp. Haliday,

Yang, P., D. Foote, A. Alyokhin, L. Lenz, and R. Messing. 2002. Distribution and abundance of mymarid parasitoids (Hymenoptera: Mymaridae) of the two-spotted leafhopper (Homoptera: Cicadellidae) in Hawaii. Biological Control 23: 237-244. Read More »

Alyokhin, A. V., P. Yang, and R. H. Messing. 2001. Distribution and parasitism of two-spotted leafhopper eggs (Homoptera: Cicadellidae) in Hawaii. Annals of the Entomological Society of America 94: 664-669.

Abundance Factors /

The two-spotted leafhopper, Sophonia rufofascia (Kuoh and Kuoh), is a recent invasive pest attacking a wide variety of plant species in Hawaii. We surveyed the distribution and parasitism of its eggs in a number of natural and agricultural habitats on the islands of Kauai, Oahu, and Hawaii. Egg density was fairly low, with egg distribution affected both

Alyokhin, A. V., P. Yang, and R. H. Messing. 2001. Distribution and parasitism of two-spotted leafhopper eggs (Homoptera: Cicadellidae) in Hawaii. Annals of the Entomological Society of America 94: 664-669. Read More »

Alyokhin, A. V., R. H. Messing, and J. J. Duan. 2001. Utilization of the exotic weed Pluchea odorata (Asteraceae) and related plants by the introduced biological control agent Acinia picturata (Diptera: Tephritidae) in Hawaii. Biocontrol Science and Technology 11: 711-718.

Abundance Factors /

The flower-head feeding fly Acinia picturata (Diptera: Tephritidae) was deliberately introduced from Mexico into Hawaii in 1959 for biological control of the exotic weed Pluchea odorata (Snow) (Asteraceae). Neither field efficacy nor possible non-target effects of the fly have been evaluated in the 40 years since the introduction. We assessed the impact of the fly on both its target

Alyokhin, A. V., R. H. Messing, and J. J. Duan. 2001. Utilization of the exotic weed Pluchea odorata (Asteraceae) and related plants by the introduced biological control agent Acinia picturata (Diptera: Tephritidae) in Hawaii. Biocontrol Science and Technology 11: 711-718. Read More »