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Prey Suitability and Phenology of Leucopis spp. (Diptera: Chamaemyiidae) Associated With Hemlock Woolly Adelgid (Hemiptera: Adelgidae) in the Pacific Northwest

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dc.creator Grubin, Sarah M.
dc.creator Ross, Darrell W.
dc.creator Wallin, Kimberly F.
dc.date.accessioned 2012-11-01T16:46:09Z
dc.date.available 2012-11-01T16:46:09Z
dc.date.issued 2011-12
dc.identifier.citation Grubin, S. M., Ross, D. W., & Wallin, K. F. (2011). Prey suitability and phenology of leucopis spp. (diptera: Chamaemyiidae) associated with hemlock woolly adelgid (hemiptera: Adelgidae) in the pacific northwest. Environmental Entomology, 40(6), 1410-1416. doi: 10.1603/EN11127 en_US
dc.identifier.uri http://hdl.handle.net/1957/34728
dc.description This is the publisher’s final pdf. The published article is copyrighted by Entomological Society of America and can be found at: http://www.entsoc.org/. en_US
dc.description.abstract Leucopis spp. (Diptera: Chamaemyiidae) from the Pacific Northwest previously were identified as potential biological control agents for the hemlock woolly adelgid, Adelges tsugae Annand (Hemiptera: Adelgidae), in the eastern United States. We collected Leucopis spp. larvae from A. tsugae infested western hemlocks in Oregon and Washington and reared them on an unidentified Pineus spp., Pineus strobi (Hartig), Adelges cooleyi (Gillette), Adelges piceae (Ratzeburg), and A. tsugae in three no-choice tests. Leucopis spp. survival on A. tsugae was significantly higher than on A. piceae during the 2010 progrediens generation test and significantly higher than on P. strobi and A. cooleyi during the 2010 sistens generation test. However, across all three tests, some larvae completed development to adult on all four of the alternative adelgid species. Larvae that survived to the adult stage were identified as Leucopis argenticollis Zetterstedt and Leucopis piniperda Mal loch. These results suggest that populations of L. argenticollis and L. piniperda in the Pacific Northwest may not be specific to A. tsugae. We also studied the phenology of Leucopis spp. on fourteen A. tsugae infested western hemlock trees in Oregon and Washington over a period of 14 mo. Leucopis spp. larvae were collected year-round, but highest densities coincided with the presence of progrediens and sistens eggs and adults of A. tsugae. There was a positive correlation between Leucopis spp. and A. tsugae abundance. en_US
dc.description.sponsorship This research was supported by grants from the USDA Forest Service, Forest Health Technology Enterprise Team, Morgantown, WV. en_US
dc.language.iso en_US en_US
dc.publisher Entomological Society of America en_US
dc.relation.ispartofseries Environmental Entomology en_US
dc.relation.ispartofseries Vol. 40 no. 6 en_US
dc.subject Adelges tsugae en_US
dc.subject Biological control en_US
dc.subject Leucopis argenticollis en_US
dc.subject Leucopis piniperda en_US
dc.subject Prey suitability en_US
dc.title Prey Suitability and Phenology of Leucopis spp. (Diptera: Chamaemyiidae) Associated With Hemlock Woolly Adelgid (Hemiptera: Adelgidae) in the Pacific Northwest en_US
dc.type Article en_US
dc.description.peerreview yes en_US
dc.identifier.doi 10.1603/EN11127

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