Diptera.info :: Identification queries :: Diptera (adults)
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 Heliozeta pellucens
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| crex |
Posted on 18-08-2007 23:18
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 Member Location: Sweden Posts: 1996 Joined: 22.05.06 |
Location: About 80 km NW of Stockholm, Sweden Date: 2007-AUG-18 Habitat: Garden I've gone through the gallery twice and the species that most resembles mine is Heliozeta helluo. Is that a correct ID? I'm not sure if I photographed two different individuals, but I think so. Anyway, I think both are the same species. What sex are they? Edit: Subject changed (Heliozeta helluo?) crex attached the following image:  [149.23Kb] Edited by crex on 19-08-2007 14:09 |
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| crex |
Posted on 18-08-2007 23:19
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Member Location: Sweden Posts: 1996 Joined: 22.05.06 |
The other photo.
crex attached the following image:  [138.8Kb] |
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| ChrisR |
Posted on 19-08-2007 09:20
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 Super Administrator Location: Reading, England Posts: 7703 Joined: 12.07.04 |
Firstly, I think there is some confusion about the generic name because there is no "Heliozeta". In Fauna Europaea and in all my keys it is listed as Eliozeta - so could Paul please change the gallery images accordingly? I must first admit to not having seen enough specimens yet but both Clytiomyia continua and Eliozeta sp. do superficially look quite similar and are sexually dimorphic. They key-out most clearly on the katepisternal bristles, which are not visible here, but going on what I have seen previously I would guess that this is a Clytiomyia continua - with the proviso that I'd appreciate Theo's comments  |
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| crex |
Posted on 19-08-2007 10:07
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Member Location: Sweden Posts: 1996 Joined: 22.05.06 |
If you tell me where the "katepisternal bristles" are placed I might have a view of these. |
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| ChrisR |
Posted on 19-08-2007 10:19
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Super Administrator Location: Reading, England Posts: 7703 Joined: 12.07.04 |
They're on the side of the thorax, just under the leading edge of the wing, above where the legs attach. We need to count the bristles there |
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| caliprobola |
Posted on 19-08-2007 10:20
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Member Location: Belgium Posts: 203 Joined: 24.05.07 |
the katepisternum can be found here for a total tachinid morphology, look at this site Edited by caliprobola on 19-08-2007 10:21 |
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| crex |
Posted on 19-08-2007 10:23
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Member Location: Sweden Posts: 1996 Joined: 22.05.06 |
Ohh, thanks both. I doubt I have a photo from that angle, but will look ... |
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| crex |
Posted on 19-08-2007 11:03
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Member Location: Sweden Posts: 1996 Joined: 22.05.06 |
Nope, no such view. I was lucky to get those two shots reasonably sharp in the hard wind.  |
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| Zeegers |
Posted on 19-08-2007 13:09
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Member Location: Soest, NL Posts: 18917 Joined: 21.07.04 |
helluo male is much more orange (and helluo female has different orbits). The third antennal segment is elongated and the arista is largely thickened, so it's Heliozeta pellucens. I've explained my spelling before, so I want dwell on it. But if you don't write Eliozeta elluo, why not ? Theo |
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| crex |
Posted on 19-08-2007 14:08
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Member Location: Sweden Posts: 1996 Joined: 22.05.06 |
I didn't realize there were more Heliozeta species around. Thank you very much Theo for having patience with us amateurs  I gather from your reasoning that this is a male!? Thanks again! |
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| Zeegers |
Posted on 19-08-2007 16:24
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Member Location: Soest, NL Posts: 18917 Joined: 21.07.04 |
the parafrontalia (between the eyes above the antenna, side of the midfrontal stripe) are yellow and very large, nearly touching each other. In females, the midfrontal stripe is broad as usual in Tachinids (mind you: this feature is only valid in Heliozeta and Clytiomyia, yes I know, Rondani wrote it without second -y). hope this helps Theo |
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