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- Claridge, M.F.; Nixon, G.A.
- Biological journal of the Linnean Society 1986 v.27 no.4 pp. 381-397
- Betula pendula; Hemiptera; anatomy and morphology; polymorphism; Wales
- ... The closely related species of leafhoppers, Oncopsis flavicollis (L.) and 0. subangulata (Sahl.), are restricted to birches, Betula pendula Roth and B. pubescens Ehrh., as host plants. Morphometric discriminant analyses of adult insects from S Wales showed O. flavicollis populations from the two Betula species to be significantly different. The best discrimination was provided by characters of the ...