Eggs are not laid in Hawaii. Nymphs There are 4 nymphal stages, or instars. The total development time in the nymphal period requires 9 to 12 days. Nymphs resemble the wingless adults except for their smaller size. Adults Non-winged adults are opaque green aphids with pale legs and broad spindle shaped bodies.
Winged individuals have a dark patch on the top of their abdomen.
High populations of this aphid in the field are usually attributed to host abundance. There are several natural enemies of this aphid worldwide. These wasps were originally specialized parasites for Hyperomyzus spp. Only A. sonchi became established. Specific parasites are not reported for Hawaii.