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Hi,

this is very small Heleomyzidae. Only 2mm long. Can it be one of our four Trixoscelis ? July 30.2008 Loviisa, Finland.

Jari

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Trixoscelis.
T.frontalis?

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a female of Trixoscelis cf. frontalis.
It is not possible to ID from the picture to the correct species level :|
Andrzej

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Ok, thank You. In this case I must say "Houston, we have a problem". Only key I have for these is the old Bei-Bienko. It says, that wings should be hyaline without dark border on posterior cross weins and so they are. I says too that t1 and anterior tarsi should be yellow but in this case they are dark. T.similis is missing from the key and I don't know how it's like. There is T.canescens in the key and it should have costa much darker than other yellow veins, t1 and first segment of anterior tarsi dark and so they are. Any hints what to look ?

Jari

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Wroclaw here :-)
Strong alcohol makes troubles :-).
Maybe following characters could be found:
near the dorsocentrals dark stripes present and the abdomen is in the middle dorsal part distinctly dark brown or brownish-black shining ? (=T. canescens). Costal cell could be more shadowed in the females, in the non alcohol samples or in the living species !

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Here is a very bad picture from dorsal side. The fly is too small for my camera :( Anyway the dark brown stripes are visible.

Jari

P.S. This is "non alcohol" sample :)

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Collect, please a male specimen !.
BTW there is a long simple shining stripe on dorsal abdominal part in T. canescens .
I've seen a similar specimen a long time ago from Norway ! (it was also a female only :| ).
I am not sure about the species level :@
Andrzej

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Ok, now I have a project for next summer ;) This was captured from a very exotic place; my garden :D Last summer I had a malaise trap there for a short time and next sumer I will keep it longer. If I get any, I will post them to You for examination.

Jari

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thx !. At time T. cf. canescens is better to use than other species name !
Andrzej