Diptera.info :: Identification queries :: Diptera (adults)
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 What are they and what are they doing?
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| anto |
Posted on 30-06-2019 17:53
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Member Location: Barcelona, España Posts: 211 Joined: 14.11.07 |
Barcelona 30-6-19.Spain.
anto attached the following image:  [277.73Kb] |
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| eklans |
Posted on 30-06-2019 20:07
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Member Location: Franconia, Germany Posts: 3443 Joined: 11.11.18 |
Hi, could be Gaurax sp. (Chloropidae) and they are eating - some already being well-fed. Eric Edited by eklans on 30-06-2019 20:22 |
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| Jan Maca |
Posted on 01-07-2019 17:19
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Member Location: Posts: 1151 Joined: 25.03.10 |
To me it looks more like Thaumatomyia. Perhaps they are sucking honeydew. Larvae of this genus are associated with aphids. |
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| Tony Irwin |
Posted on 01-07-2019 17:23
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 Member Location: Norwich, England Posts: 7193 Joined: 19.11.04 |
I would say Gaurax, which has been regularly recorded feeding on bird droppings
Tony ---------- Tony Irwin |
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| Paul Beuk |
Posted on 02-07-2019 08:03
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 Super Administrator Location: Netherlands Posts: 19244 Joined: 11.05.04 |
Thaumatomyia should have a flat scutellum but the shine on several specemens shows the scutellum is convex. I go with Gaurax fascipes.
Paul - - - - Paul Beuk on https://diptera.info |
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| von Tschirnhaus |
Posted on 22-08-2019 17:44
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Member Location: Bielefeld, Germany Posts: 431 Joined: 04.11.07 |
Gaurax Loew, 1863 spec. (Chloropidae). This is a highly interesting photo, as Gaurax species are hitherto not known to aggregate on a feeding source. In this case it may be a bird dropping containing electrolytes which are luring especially tropical Chloropidae (and other flies) in electrolyte-poor habitats and rainforests. Gaurax species are difficult to identify because of their wide colour variability. The male genitalia are specific. Several European species are still undescribed, mostly caught on or reared from dead wood or mushrooms and preferring shady biotopes. If any male could be obtained from the same locality, the writer could identify this species possibly being a first record for Spain.
Edited by von Tschirnhaus on 09-04-2020 16:43 |
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| anto |
Posted on 30-07-2020 09:16
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Member Location: Barcelona, España Posts: 211 Joined: 14.11.07 |
Sorry for not answering before. I will try to return to the place and look for these mosquitoes again. I will also look in my file from that day and try to put a more enlarged photo, where you can see more details. Regards. anto attached the following image:  [217.62Kb] Edited by anto on 30-07-2020 09:29 |
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| anto |
Posted on 30-07-2020 09:41
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Member Location: Barcelona, España Posts: 211 Joined: 14.11.07 |
I attach a couple of images. If you want the file in a large size, you only have to ask me and I will gladly send it to you by email.
anto attached the following image:  [170.17Kb] |
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but don't see the image in the post.
