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nymphs of Brochymena quadripustulata eclosing from eggs. Shot in the lab from eggs laid by adults collected in Maupin, OR, on alder by the Deschutes River.
eggs take around 10-14 days to develop at 72F/22C, and are originally opaque and bright green. The black triangles are sclerotized "egg openers", that help to lift the top off of the egg. Although they look like a beak or mustache, the nymph is oriented so that the egg opener is above its eyes.