Mordvilko's Keys for the Determination of Aphids living continuously or temporarily on Graminaceous Plants and Sedges

Abstract

[The systematic keys to the species of Aphids that attack Graminaceae, recently published by Mr. A. K. Mordvilko (Bull. Petrograd Div. Sta. Protect. Plants from Pests, iii, no. 3, 1921, 72 pp., 19figs.) are likely to be of considerable value to students of these injurious insects, and it seemed desirable that they should be translated from Russian into English. The original keys are very lengthy, and therefore Mr. B. P. Uvarov has kindly condensed them, and they have then been translated, under his supervision, by Miss F. B. Constable, of the Imperial Bureau of Entomology. Mr. F. Laing, of the British Museum, has also kindly assisted with advice in regard to certain technical points.—Ed.]