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The existence of two species of Euceraphis (Homoptera: Aphididae) on birch in Western Europe, and a key to European and North American species of the genus
Author(s) -
BLACKMAN R. L.
Publication year - 1977
Publication title -
systematic entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.552
H-Index - 66
eISSN - 1365-3113
pISSN - 0307-6970
DOI - 10.1111/j.1365-3113.1977.tb00349.x
Subject(s) - biology , betula pendula , aphididae , key (lock) , homoptera , morphometrics , betula pubescens , botany , genus , taxonomy (biology) , zoology , ecology , pest analysis
. Aphids formerly regarded as Euceraphis punctipennis (Zetterstedt) are distinguished as two species, E.punctipennis and E.betulae (Koch), on the basis of cytological and morphological differences. E.punctipennis is primarily associated with Betula pubescens Ehrh., and E. betulae with B.pendula Roth. Seasonal variations in morphometrics, pigmentation and development of wax glands in the two species are described and compared. A key to European and North American species of Euceraphis is provided.