Abstract
Pemphigus saliciradicis (Hemiptera: Aphididae: Eriosomatinae) lives on roots of Salix spp. (Salicaceae) and Vitis vinifera (Vitaceae) in Holarctic region. Morphometric data for eight morphological characters, measured from 10 field collected samples (50 specimens) were analysed by principal component analysis (PCA) and canonical discriminant analysis (CDA). Morphometric analyses provided a clear separation of the aphids originating from willow and those collected on grapevine. This indicates that within the Pemphigus saliciradicis species there are two host races or subspecies. Differentiated diagnosis between grapevine root feeding P. saliciradicis and Australian Pemphigus sp. sampled on grapevine roots was provided. An identification key to the apterous females of aphid species feeding on roots of grapevine (Vitis spp.) was given. (© 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
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