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 Sphaerocerid, UK, Nov - Crumomyia roserii confirmed
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| Martin Cooper |
Posted on 30-11-2014 12:01
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
Found on a heap of Honey Fungus (Armillaria) on a stump in my nearby public park on 2 Nov 2014, Ipswich, East Suffolk (TM163450). I think it is a male Crumomyia roserii. Any comment, and especially confirmation of the species, would be very much appreciated. Best wishes, Martin Here is the place I found the fly Martin Cooper attached the following image:  [146.98Kb] Edited by Martin Cooper on 17-12-2014 09:31 |
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| Martin Cooper |
Posted on 30-11-2014 12:03
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
lateral view
Martin Cooper attached the following image:  [141.07Kb] |
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| Martin Cooper |
Posted on 30-11-2014 12:05
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
Looking at Brian Pitkin's key to British Sphaerocerids for important characters, here is a close-up of the wing, which suggests Copromyzinae.
Martin Cooper attached the following image:  [144.51Kb] |
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| Martin Cooper |
Posted on 30-11-2014 12:06
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
... and the marginal scutellar setae are also indicative of Copromyzinae...
Martin Cooper attached the following image:  [146.79Kb] |
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| Martin Cooper |
Posted on 30-11-2014 12:07
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
I think this fly has more than a single row of postoculars...
Martin Cooper attached the following image:  [146.68Kb] |
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| Martin Cooper |
Posted on 30-11-2014 12:08
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
...
Martin Cooper attached the following image:  [145.6Kb] |
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| Martin Cooper |
Posted on 30-11-2014 12:10
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
... and after much searching I found the hook on 1st front tarsomere characteristic of Crumomyia!
Martin Cooper attached the following image:  [133.36Kb] |
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| Martin Cooper |
Posted on 30-11-2014 12:12
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
I don't think the hind tibia have distinct av setae about the middle...
Martin Cooper attached the following image:  [141.56Kb] Edited by Martin Cooper on 30-11-2014 12:12 |
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| Martin Cooper |
Posted on 30-11-2014 12:13
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
the anepisternum is mostly shining and the katepisternum without close-set long setae
Martin Cooper attached the following image:  [146.14Kb] |
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| Martin Cooper |
Posted on 30-11-2014 12:15
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
I couldn't find a hook on hind first tarsomere resembling the illustration in the key...
Martin Cooper attached the following image:  [136.03Kb] Edited by Martin Cooper on 30-11-2014 12:20 |
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| Martin Cooper |
Posted on 30-11-2014 12:26
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
another view of the hind legs, still no hook-like process...
Martin Cooper attached the following image:  [142.7Kb] |
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| Martin Cooper |
Posted on 30-11-2014 12:29
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
tibiae yellow brown (especially mid and hind tibiae - see hind legs photos and lateral and ventral views above), anepimeron dusted and, as previously illustrated, no hook on male hind 1st tarsomere -> Crumomyia roserii. Comments, please... Martin Cooper attached the following image:  [142.74Kb] Edited by Martin Cooper on 01-12-2014 10:37 |
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| Martin Cooper |
Posted on 09-12-2014 15:13
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
Paul, If you have a minute... please... or would you be able to look at the fly if I popped it in the post? Best wishes, Martin |
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| Paul Beuk |
Posted on 11-12-2014 10:34
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 Super Administrator Location: Netherlands Posts: 19375 Joined: 11.05.04 |
This is indeed Crumomyia roserii. 
Paul - - - - Paul Beuk on https://diptera.info |
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| Martin Cooper |
Posted on 11-12-2014 11:03
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
Thanks Paul. I'll submit a photo to the gallery. |
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