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Spring Hovers

 
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Roger K.A. Morris



Joined: 06 Nov 2005
Posts: 1583

PostPosted: Sun Apr 13, 2008 4:03 pm    Post subject: Spring Hovers Reply with quote

At last a half-good day for me. Two trips out - the first aborted because the sun went in as soon as I arrived at Wakerley Gt Wood. This afternoon it was better. Plenty of hovers at grey willow:

Criorhina ranunculi, Platycheirus discimanus, Syrphus torvus, Parasyrphus punctulatus, Melangyna lasiphthalma and a few P. albimanus.

I think there is a jizz for S. torvus - the tarsi seem to be much blacker than other sp.

Roger
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conopid



Joined: 03 Sep 2005
Posts: 342
Location: Shrewsbury, Shropshire

PostPosted: Sun Apr 13, 2008 5:22 pm    Post subject: Reply with quote

I'm hoping for sunshine tomorrow and I am desperate to see some spring hovers (withdrawal symptoms are setting in). If I see anything like this I'll be well pleased.
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Nigel Jones
Shrewsbury
Shropshire
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chris webster



Joined: 19 Jan 2006
Posts: 12
Location: Reading Berks

PostPosted: Tue Apr 15, 2008 9:54 pm    Post subject: Reply with quote

Keeps happening to me too.... start out on a trip and the sun goes in.
I've still not seen M. lasiophthalma or C. ranunculi, despite checking sites where they were present last year.

At last some sun this afternoon, and some summer species.. females of E. latifasciatus and H. pendulus. Also E. intricarius, and hoards of P. albimanus. Numbers of E. eligans increasing.

Maybe that trick for recognising torvus will work... I've failed to find a good clue to distinguishing Syrphus. Markings on the frons don't seem consistent. Having markings on tergite 2 paler than the rest looks important, but isn't?
Saw male torvus with bands just divided today, by the way.
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Roger K.A. Morris



Joined: 06 Nov 2005
Posts: 1583

PostPosted: Thu Apr 17, 2008 9:16 pm    Post subject: Reply with quote

Please don't try to use my thoughts on Jizz as a firm way of ID this species in the field - it needs microscopic ID.

Regards

Roger
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conopid



Joined: 03 Sep 2005
Posts: 342
Location: Shrewsbury, Shropshire

PostPosted: Fri Apr 18, 2008 10:25 am    Post subject: Reply with quote

The weather continues to be unremittingly grim here in Shropshire. In three days of field work I only managed to find a few Syrphus torvus, plenty of Platycheirus albimanus, a single Cheilosia vernalis, a single C pagana, one Melangyna lasiopthalma, several E tenax, one Melanostoma scalare, and by way of good cheer, two Criorhina ranunculi on Salix flowers. The Criorhina were out in only 8 degrees C air temperature, the short spells of sunshine were enough to raise them from their slumbers.

Warmer conditions promised next week........ (pleeease)

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Nigel Jones
Shrewsbury
Shropshire
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