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Hello,


is it possibe to distinguish between Sapromyza sp. and Chyromyidae?

I guess it is difficult, but maybe there is chance :-)

Click on the image to get a larger version of the image.


Faulfliege ? (Lauxaniidae) by Sven, auf Flickr

Location: Badberg, Oberbergen, Kaiserstuhl, Germany (close to Freiburg and Colmar)
Date of discovery: 2020 June 11
Size: approx. 0,5 mm


Thanks a lot.
Sven

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Lauxaniidae

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Hi John,

Thanks a lot for identifying.
Could you tell me what speaks against Chyromyidae?

Regards
Sven

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The strong dorsal preapical britles on the tibiae are not present in Chyromyidae.

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Bristles of the head and thorax are black. In Chyromyidae they are usually yellow to brown. Tibiae have preapical bristles, absent in Chyromyidae. Two pairs of reclinate fronto-orbital bristles are the normal condition in Lauxaniidae but Chyromyidae often have three. Most Chyromyidae have weak vibrissae.

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Hi John,
Hi Tony,

Thanks so much for your support and explanations :-)

Regards Sven

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Sapromyza - no pre-sutural DCs

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Sapromyzosoma quadripunctata, male