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The Society for the study of flies (Diptera)

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#1 2019-05-18 17:24:45

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

Rhamphomyia marginata in South Hampshire...at MV...unusual?

I was operating a lamp-and-sheet under a beech tree in a wood near West Meon last night, when a pair of Rhamphomyia marginata in copula appeared on the sheet.
I am delighted, but also a tad confused, since I thought this species was diurnal, and anyway didn't occur anywhere nearer than Kent.
Perhaps I shouldn't labour the point about it being diurnal, since on the same night we recorded Empis scutellata (a fairly regular occurrence), Empis stercorea (male det'd gen) and Platypalpus cothurnatus.

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#2 2019-05-19 09:12:30

conopid
DF Members
Name: Nigel Jones
From: Shrewsbury
Registered: 2008-02-27
Posts: 701
Website

Re: Rhamphomyia marginata in South Hampshire...at MV...unusual?

Hi Richard, the recording scheme has a 2009 record for R. marginata from the New Forest, so your record confirms its presence in Hampshire.


Nigel Jones
Shropshire

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#3 2019-05-20 10:13:24

Tony Irwin
DF Members
Name: Tony Irwin
From: Norwich
Registered: 2008-03-01
Posts: 825

Re: Rhamphomyia marginata in South Hampshire...at MV...unusual?

Hi Richard
My understanding is that most British records of marginata are from light traps.

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#4 2019-05-20 16:00:48

Laurence Clemons
DF Members
Name: Laurence Clemons
Registered: 2008-04-02
Posts: 385

Re: Rhamphomyia marginata in South Hampshire...at MV...unusual?

Most British records are not from light traps. In 1995 and 1996 I made a special search for the species in East Kent and probably have more sightings than anyone else. Females begin to swarm from around 18:00 in open clearings in woodland. Males and single females have also been found in the early afternoon until about 17:00.

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#5 2019-05-20 19:13:36

Tony Irwin
DF Members
Name: Tony Irwin
From: Norwich
Registered: 2008-03-01
Posts: 825

Re: Rhamphomyia marginata in South Hampshire...at MV...unusual?

Thanks, Laurence - I must amend my copy of Falk and Crossley (2005) which states "Adults ... are almost exclusively taken at moth light-traps..."
Perhaps it would have been more accurate for me to say that most British recorders of marginata have found it in moth traps. wink
I confess I can't remember the last time I've collected at 18.00 - I suspect most dipterists have put their pooters away by then, but as you've demonstrated, perseverance pays off!

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