
Stereonychus fraxini cocoon with parasitoid wasp inside
Main image seems to be a normal cocoon, but from a different angle an orange head with large, widely spaced eyes and dark ocelli between them is already visible inside ... that's no Stereonychus fraxini, but the head of some parasitoid wasp!

Stereonychus fraxini is a small Weevil (Curculionidae) in the tribe Cionini, that consists of similar beetles with ectophagous larvae creating secretion cocoons on the plant's substrate to pupate.
Similar species: Beetles
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