
Oak marble gall wasp - Andricus kollari
Today on the windows of my apartment on the 7th floor in Sofia appeared dozens of small insects, about 2-2.5 mm. They turned out to be Oak marble gall wasps. The photo is taken with Olympus M Zuiko 30mm Macro lens without flash.

Andricus kollari, also known as the marble gall wasp, is a parthenogenetic species of wasp which causes the formation of marble galls on oak trees. Synonyms for the species include Cynips kollari, Andricus quercusgemmae, A. minor, A. indigenus and A. circulans.
Similar species: Wasps, Bees, Sawflies And Ants
By Jivko Nakev
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Uploaded Feb 18, 2023. Captured Feb 18, 2023 11:43 in ul. "Vorino" 21, 1612 g.k. Belite brezi, Sofia, Bulgaria.
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