Diptera.info :: Identification queries :: Diptera (adults)
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 Therevidae_2
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| jhstuke |
Posted on 27-10-2007 12:11
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Member Location: Leer, Germany Posts: 147 Joined: 06.06.07 |
the second species
jhstuke attached the following image:  [124.26Kb] |
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| jorgemotalmeida |
Posted on 27-10-2007 12:15
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 Member Location: Viseu - PORTUGAL Posts: 9295 Joined: 05.06.06 |
some kind Thereva sp. It is a female. (I think). |
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| Zeegers |
Posted on 27-10-2007 13:59
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Member Location: Soest, NL Posts: 18833 Joined: 21.07.04 |
Vittae on thorax suggest plebeja / strigata, however, long shot. Spring or summer ? Theo |
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| Kahis |
Posted on 27-10-2007 14:05
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 Member Location: Helsinki, Finland Posts: 1999 Joined: 02.09.04 |
By the shape of the frontal callus and the broad, strong stripes: probably Thereva microcephala. It is a boreomontane species - where did you find this specimen? Flight time is listed as June-August. Kahis |
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| jhstuke |
Posted on 28-10-2007 19:01
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Member Location: Leer, Germany Posts: 147 Joined: 06.06.07 |
The black spot on the frons doesnt reach to the eye - that doesn?t fit to plebeja / strigata. The grey bands at the margin of T3 and T4 are complete - that doesn?t fit to microcephala. Which species have such distinct grey stripes on the mesoscutum? Jens-Hermann |
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| Kahis |
Posted on 28-10-2007 19:24
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Member Location: Helsinki, Finland Posts: 1999 Joined: 02.09.04 |
Are you sure the grey bands are complete. They look rather interrupted to me, at least on T2 and T4? Then again, I've been wrong before 
Kahis |
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| jhstuke |
Posted on 28-10-2007 21:48
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Member Location: Leer, Germany Posts: 147 Joined: 06.06.07 |
Dear Kahis! At least I am quite sure that there has been a complete grey band and the dark spots didn?t reach the back. But I have never seen microcephala and I don?t know how this species looks like. But I have a good starting point and will compare the specimen with microcephala. Thank you very much for the valuable help! Jens-Hermann |
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| Maddin |
Posted on 30-10-2007 18:38
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 Member Location: Sacramento CA USA Posts: 194 Joined: 30.06.05 |
Kevin Holston also agrees with this being microcephala... Cheers Martin Martin Hauser |
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| jhstuke |
Posted on 30-01-2008 16:43
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Member Location: Leer, Germany Posts: 147 Joined: 06.06.07 |
Thereva microcephala, female |
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