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Hi, can someone tell me a subfamilyor maybe even more? It was in lake, some 2-3 mms. It is preparated now and I also made ssome photos with a research microscope at the university.

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It is a Chironomidae, Tanypodinae, Pentaneurini. To know more about the genus it is wise to study the anal claws i.e. do one ore more of the the anal claws have an accesory tooth/teeth at the inner edge, one claw in each pair with on extra long innertooth, two claws with an extra innertooth or a comb of teeth in about 3 claws and offcourse no extra innertooth. The larva has long anal papillae, so Guttipelopia is out of the question. The second antennel segment is light brown, which is diagnostic for a few genera.

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Thank You, I have another photo and I can make more of the anal claws!

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Monopelopia tenuicalcar
Diagnostic for this Tanypodinae species are the anal claws . For each posterior parapod with the claws, there is 1 (-2) brownish claw(s) with 1-2 strong inner tooth.

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Thank You very much, great to know the exact species!

Walter