PLATE LVI. 



Aphis peuni. (Page 64.) 



Fig. 1. — Pupa. 



Fig. 2. — Winged viviparous female. 



Fig. 3. — Male with voluminous wings. 



Fig. 4. — Apterous oviparous female, a. Eostrum 

 of tlie female, h. Genito-anal rings, witli cauda and 

 cornicles of winged female, viewed from under side. 

 c. Head, rostrum, coxae, and tuberculated antennae of 

 the winged male. 



N.B, — The rostra of the males of Aphis are always 

 well developed. The males of some Pemphiginse, &c., 

 on the contrary, have no rostra or mouth parts. 



