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#1 2012-02-13 01:28:02

Richard Dickson
DF Members
Name: Richard Dickson
Registered: 2008-11-24
Posts: 322

Spooked by a rhino.

With only seven possible solutions to this problem, Iím not best pleased to find myself at a loss.
This fly is 7.1 mm long (wing length 5.4 mm). Cell R4+5 has a very short stalk. Another specimen has R4+5 and M joining even more closely to the costa. Vein m is cleanly angled as shown. The hang-vein on m-cu is an aberration not present on the opposite wing. This should lead to Trichogena rubricosa, but the scutellum clearly has three pairs of marginal bristles and the legs are entirely black. Iíd be delighted for it to be a Phyto, but it canít be since in these vein m is bent rather than angled and there are no dust-stripes on the mesoscutum. Where do I go from here?

Eastney nr Fort Cumberland SZ679991 South Hampshire (VC11) 25.vii.2011. This is vegetated shingle and therefore calcareous.


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#2 2012-02-13 17:30:08

Mark
DF Members
Name: Mark Mitchell
From: Hampshire
Registered: 2008-06-17
Posts: 273

Re: Spooked by a rhino.

I can't help with the ID. But interesting location. Have you found much else there?

Mark

Last edited by Mark (2012-02-13 17:31:15)

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#3 2012-02-14 00:31:19

Richard Dickson
DF Members
Name: Richard Dickson
Registered: 2008-11-24
Posts: 322

Re: Spooked by a rhino.

Hi Mark,
Cistogaster globosa is about the best fly from three visits, but there are quite good aculeates - Lasioglossum pauperatum, Andrena humilis, A. fulvago, A. minutuloides, A. alfkanella, Ectemnius sexcinctus, Smicromyrme rufipes, Megachile dorsalis, Philanthus triangulum. A small area nestled between Fort Cumberland, a block of flats and a car-park it is an unprepossessing site - but I'm sure it still has lots of goodies to be uncovered. Come along!
BW
Richard

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#4 2012-02-14 03:06:38

falky
Registered user
Name: Steven Falk
From: Kenilworth
Registered: 2009-11-30
Posts: 416

Re: Spooked by a rhino.

This is the rhinophorid Phyto melanocephala - the venation combined with the 3-striped thorax is very characteristic. It loves hot and sparsely-vegeated habitats, usually one of the commonest flies of vegetated shingle.

Falky

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#5 2012-02-14 04:03:48

Richard Dickson
DF Members
Name: Richard Dickson
Registered: 2008-11-24
Posts: 322

Re: Spooked by a rhino.

I'm really pleased to have this. I've been wondering if I was overlooking Phytos. However, van Emden says that the mesoscutum in unstriped, and that the median vein is bent rather than angled, which accounts for my confusion. Again, thanks for your help....much appreciated!  Very glad to lay this one to rest! Richard.

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#6 2016-04-24 22:26:05

Dafydd
Registered user
Name: Dafydd Lewis
From: Surrey and Gwynedd
Registered: 2010-12-30
Posts: 3

Re: Spooked by a rhino.

Why does it tend to like shingle?
Dafydd

falky wrote:

This is the rhinophorid Phyto melanocephala - the venation combined with the 3-striped thorax is very characteristic. It loves hot and sparsely-vegeated habitats, usually one of the commonest flies of vegetated shingle.

Falky

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