Brown Marmorated Stink Bug nymphs (Halyomorpha halys) 9/8/10 FPA DE

This is a montage of pictures I took over the course of several years. The nymphs in 2010 FPA, and the adult (lower left) in March 2012 PL.

What I took to be adult stink bugs (top left and middle) are actually still nymphs. They are 5th instar (a stage of molt before adult).

The nymph on the right is 4th instar.