Tag Archives: gregarious

Ectoparasitic wasp larvae

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.

Colin Purrington Photography: Insects &emdash; Larvae of ectoparasitic wasps on caterpillar

Colin Purrington Photography: Insects &emdash; Larvae of ectoparasitic wasps on caterpillar

Colin Purrington Photography: Insects &emdash; Larvae of ectoparasitic wasps on caterpillar

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Eastern boxelder bugs

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.

Colin Purrington Photography: Insects &emdash; Eastern boxelder bug (Boisea trivittata) nymph

Colin Purrington Photography: Insects &emdash; Eastern boxelder bugs (Boisea trivittata) on lichen

Colin Purrington Photography: Insects &emdash; Eastern boxelder bugs (Boisea trivittata) on seeds

Colin Purrington Photography: Insects &emdash; Eastern boxelder bugs (Boisea trivittata) congregating on plant

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