Acyrthosiphon bidentis Eastop 1953

Victor, Eastop, F. & Blackman, Roger L., 2005, Some new synonyms in Aphididae (Hemiptera: Sternorrhyncha), Zootaxa 1089, pp. 1-36 : 3

Acyrthosiphon bidentis Eastop 1953 = Acyrthosiphon ilka Mordvilko 1914 (valid name)

African populations identified as A. bidentis tend to have longer, more slender SIPH than Eurasian populations of A. ilka , but have almost identical host plant preferences across several families ( Papaveraceae, Compositae, Cruciferae , Linaceae ), so that A. bidentis is best considered as a geographical variant of A. ilka . Remaudière and Remaudière (1997) questioned the validity of Mordvilko’s species but the 1914 description is detailed and seems unambiguous.