Aphid larvae have four juvenile stages, called instars, through which they develop to become adults; newborn aphids are in the first instar. By Day 2, some first instar aphids have grown enough to ...
LIFE CYCLE: Eggs take 3 to 8 days to develop and hatch into caterpillars. Caterpillars take 9 to 14 days to go through five instar stages before pupating. The first instar larva, just out of the egg, ...