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Is this a fly of the family of Lauxaniidae? Could someone tell me what species or genus it is?

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It certainly looks like a lauxaniid, but it would be helpful to know where it was caught (which country? what habitat?)

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It was reared from deadwood beech and oak branches that were exposed in beech dominated forests in Basel Switzerland and then put in emergence traps.

If I may ask what Genus could this specimen be?

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Thanks for the information. That's helpful. But this is not a species I recognise. Maybe one of the experts can help - try sending a pm to Val (Nosferatumyia).

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Based on the wing pattern Homoneura is likely.

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Thanks John.

Could it possibly be Homoneura interstincta?

And could the larvae of Homoneura develop under the bark of rotting deadwood?

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A review of the North American species of Homoneura says "The larvae have been reported as being saprophagous, living in fallen leaves, straw, rotting wood, bird nests, and decaying vegetation. A few species have been reported to be phytophagous, living in the root collars, stems, and leaves of clover (Trifolium), in the ovaries of violets (Viola), and in the leaf-like phylloclades of prickly pear (Opuntia)."

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Thanks for the larval ecology information.