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 Ephydridae - Atissa?
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| conopid |
Posted on 19-09-2011 11:38
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 Member Location: United Kingdom Posts: 923 Joined: 02.07.04 |
I have provisionally keyed this Ephdridae as Atissa, but I haev no idea what Atissa looks like, so can anyone comment? UK 28 July conopid attached the following image:  [70.14Kb] Nigel Jones, Shrewsbury, United Kingdom |
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| conopid |
Posted on 19-09-2011 11:38
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Member Location: United Kingdom Posts: 923 Joined: 02.07.04 |
Arista are long plumose:
conopid attached the following image:  [10.27Kb] Nigel Jones, Shrewsbury, United Kingdom |
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| Tony Irwin |
Posted on 19-09-2011 21:37
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 Member Location: Norwich, England Posts: 3305 Joined: 19.11.04 |
I'd say this one was Hydrellia, Nigel.
Tony ---------- Tony Irwin - http://www.museum.../index.htm |
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| conopid |
Posted on 19-09-2011 22:19
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Member Location: United Kingdom Posts: 923 Joined: 02.07.04 |
Thanks Tony- Can I check: The lunule is well above the top of the antenna (as one would expect for Hydrellia) but the distance between the lunule and the anterior ocellus is less than the distance between the two posterior ocelli. Is this a case of an exception to the rule, or is it best just to look for the general placement of the lunule in relation to the antenna? Nigel Jones, Shrewsbury, United Kingdom |
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| Tony Irwin |
Posted on 20-09-2011 21:32
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Member Location: Norwich, England Posts: 3305 Joined: 19.11.04 |
In Hydrellia the distance between the top of the lunule and the anterior ocellus is less than the distance between the outside edges of the posterior ocelli. I think that's what you just said. So it's Hydrellia. Perhaps worth checking the wording in the key you're using? 
Tony ---------- Tony Irwin - http://www.museum.../index.htm |
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| conopid |
Posted on 23-09-2011 21:21
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Member Location: United Kingdom Posts: 923 Joined: 02.07.04 |
I think this is one of those borderline cases where the fly has not read the script! I'm happy it's Hydrellia, although the ratios described are not quite right, I can't see that it can be anything else. Thanks for your help. Nigel Nigel Jones, Shrewsbury, United Kingdom |
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http://www.luomus.
...what you prefer, we can discus this, during some good wine, cheese and many new pinned flies!