Pea aphids overwinter as eggs on the leaves and stems of perennial legumes (eg. clover or alfalfa crowns). They produce 2-3 generations asexually before winged females migrate to summer host crops where several more generations are produced. Winged sexual forms develop in late summer that mate and females return to winter host crops to lay eggs.
For more information about pea aphids, see our Insect of the Week page!
|Pea aphid adult (L) and nymph (R)|
©Mike Dolinski, MikeDolinski@hotmail.com