1910] Key to the Genera of Aphidmae 325' 



Gen. Cryptosiphum Buckton 

 type artemisae Buck. 



Antennae shorter than the body, spur of sixth segment 

 shorter than the third segment and about one and one half 

 times as long as the sixth. Forehead fiat, frontal ocelli not 

 prominent. Body robust, wings long with the cubitus twice 

 forked. Nectaries little more than pores with the edges 

 slightly raised. Cauda short and tapeHng, anal plate rounded. 



All of the genera given in this paper may be found with the 

 original citation listed in the Entomological News for April 

 1910, pp. 147-156. 



