Abstract
Apterous and alate viviparous females of Aphis cephalariae sp. n. living on Cephalaria gigantea (Dipsacaceae) are described and illustrated. Differentiations between the new species and the morphologically similar A. acetosae are given. Based on apterous viviparous females, keys are provided to all aphid species recorded as feeding on Cephalaria gigantea, and to all Aphis species living on Dipsacaceae.References
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