Soybean looper: Biology and ecology

The soybean looper, Pseudoplusia includens, is uncommon in Iowa. This caterpillar has continuous generations in the southern U.S. and overwinters in southern Florida and Texas. It is not known if this insect is migratory, but apparently is carried by weather systems to some extent. The female moth deposits eggs on the undersides of soybean leaves (laying about 640 eggs over her lifespan). Eggs will take about 3 days to hatch and will develop through 6 larval stages in 13.4 days. Development from egg until adult takes about 26.5 days.