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Bibio marci · storakojis uodas

EN · St. Mark's fly, hawthorn fly DE · Märzfliege, Märzhaarmücke, Markusfliege, Markushaarmücke PL · leń marcowy

https://en.wikipedia.org/wiki/Bibio_marci The male is about 12 mm and the female 14 mm. This is quite a hairy black insect. The males have large bulbous eyes and a rather tubular segmented body and black legs. The females have smoky wings and much a smaller head and eyes. The front legs have a stout spine at the tip of the tibia. Other Bibio species are broadly similar, though B. marci is larger than most. The larvae feed on grass roots, leaf mould and decaying matter.