Here are photographs of a clump of ectoparasitic larvae I found attached to a small caterpillar. I think they are wasps in the genus Euplectrus (Eulophidae). Females apparently inject hosts with a venom that prevents the caterpillar from molting, thus preventing the caterpillar from shedding the larvae along with the discarded skin. Caterpillar was approximately 12 mm in length. Media, PA.
Tag Archives: gregarious
Below are some photographs of Eastern boxelder bugs (Boisea trivittata) I took recently at the John Heinz National Wildlife Refuge in Tinicum, Pennsylvania. These true bugs are fun to watch — richly colored, morphologically variable (they go through numerous instars), and often shockingly gregarious. They move a lot, too, so rather annoying to get a decent photograph.