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Eupeodes nielseni?

 
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robinsects



Joined: 25 Aug 2008
Posts: 18

PostPosted: Sat Oct 25, 2008 5:50 pm    Post subject: Eupeodes nielseni? Reply with quote



Yorkshire Bridge Villas Gardens
SK28 Derbyshire
20-8-2008

About the size of Eupeodes luniger, for which I originally mistook it. Two species with similar blunt ended lunules illustrated in Stubbs and Falk.: Scaeva albomaculata - less likely since this has yellow edges to abdomen, lunules go right to the front of the tergites and would, I think, have been larger and ; E. nielsen, although this on the other hand is I understand largely a Scottish species. This does not rule it out however since it is apparently increasingly found in England associated with coniferous wood plantions and there is a pine wood bordering the garden in which this species was seen.. On the otherhand it could afterall be an unusual form of E. luniger or even E. corollae.
Any comments appreciated.
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Roger K.A. Morris



Joined: 06 Nov 2005
Posts: 1652

PostPosted: Sat Oct 25, 2008 9:16 pm    Post subject: Reply with quote

Hello

I'm afraid on this phot the best you can say is Eupeodes.

You cannot do E. nielseni from photos - requires detailed microscopic examination I'm afraid.

Regards

Roger
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robinsects



Joined: 25 Aug 2008
Posts: 18

PostPosted: Mon Oct 27, 2008 1:05 am    Post subject: Reply with quote



Does this view of the face help?
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John O'Sullivan



Joined: 05 Oct 2005
Posts: 128
Location: Sandy, Bedfordshire, UK

PostPosted: Tue Oct 28, 2008 10:17 pm    Post subject: Reply with quote

Intriguing pictures, Robinsects, but I'm afraid that, as Roger says, you will not be able to establish nielseni from them. In nielseni, according to Stubbs and Falk 2002 (page 209), the hind femur is usually dark on the basal two-thirds. To me this feature, as shown in your pictures, seems to be mainly orange, and might push you towards luniger.

Alas, some interesting ones will always get away!

Happy hunting in what's left of the season. (Snow in the Midlands this evening!)

John
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