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 Teichrandschwebfliege (Parhelophilus versicolor or frutetorum)?
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| Helga Becker |
Posted on 25-10-2015 15:41
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Member Location: Posts: 198 Joined: 12.02.11 |
Hello, Can you help me with identification of this fly? Thenauriegel bei Breitenbrunn / Neusiedler See / Österreich 12. Mai 2007 Best regards Helga Becker |
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| Helga Becker |
Posted on 25-10-2015 15:54
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Member Location: Posts: 198 Joined: 12.02.11 |
Helga Becker wrote: |
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| Helga Becker |
Posted on 25-10-2015 15:54
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Member Location: Posts: 198 Joined: 12.02.11 |
Helga Becker wrote: Helga Becker wrote: |
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| johnes81 |
Posted on 22-10-2016 10:53
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 Member Location: Posts: 1978 Joined: 15.10.16 |
if the following keys are accurate, then you have a photo of versicolor: Parhelophilus versicolor Occiput entirely yellow pilose face profile convex costa with extensive golden pile basally, extending beyond humeral crossvein the hairs in the area of the occiput are entirely yellow/golden. Parhelophilus versicolor I have no idea why noone answered your question. interesting. I hope that you have a pleasant day. Edited by johnes81 on 22-10-2016 10:54 |
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| Sundew |
Posted on 26-10-2016 23:36
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 Member Location: Posts: 3890 Joined: 28.07.07 |
I think no-one replied because the species are tricky. Ball & Morris (2013) write: "These two species are very difficult to separate, especially the females. Determining the sex is also difficult ... - the best way to check is to look for a genital capsule; the abdomen of females is tapered." The males can be told apart by a long-haired tubercle underneath the hind femur in P. frutetorum, which lacks in P. versicolor. But this character is not helpful in our case. The text above is not a "key", as no alternatives are given, but a description of characters of one species; the other might look similar. In http://www.natur-...-322.html# it is stated that the hairs on the vertex of P. versicolor are entirely yellow, whereas in P. frutetorum there are yellow plus black hairs. The vertex of your fly seems to be rather dark, so black hairs might be present. However, if even Menno Reemer doesn't dare to decide in http://www.dipter...d_id=39004, I do not either... Regards, Sundew Edited by Sundew on 26-10-2016 23:37 |
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but don't see the image in the post.
