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The Society for the study of flies (Diptera)

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#1 2017-03-29 13:30:05

Jim Jobe
DF Members
Name: Jim Jobe
Registered: 2008-04-08
Posts: 138

Unknown fly

I was sent these two photos of a fly which is puzzling me. I feel as if I recognise it but can get no further than that; old age I guess!


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#2 2017-03-29 14:33:27

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

Re: Unknown fly

This is an ichneumon wasp (Ichneumonidae). I think it is Ophion obscuratus, but it would be better to post it with the Hymenopterists Forum for an expert opinion. There is a useful (but not comprehensive) guide to ichneumons at http://www.nhm.ac.uk/content/dam/nhmwww … -guide.pdf

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#3 2017-03-29 17:21:29

Jim Jobe
DF Members
Name: Jim Jobe
Registered: 2008-04-08
Posts: 138

Re: Unknown fly

Thanks Tony. I thought initially it might be an ichneumon but when I looked at the photo again what I thought to be the hind wings seemed to be just a shadow on the ground. I'm sure you're right though. I've got the papers from Entomologists' Gazette in the 1970s dealing with the Ophions somewhere so I'll have a look.
Best wishes,
Jim

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#4 2017-03-29 18:08:10

Jim Jobe
DF Members
Name: Jim Jobe
Registered: 2008-04-08
Posts: 138

Re: Unknown fly

Bill Ely, parasitica recorder for the YNU has confirmed that it is obscuratus; many thanks Tony
Jim

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#5 2017-03-29 22:15:09

batch valley wildlife
DF Members
Name: Mike Shurmer
From: Shropshire VC40
Registered: 2015-02-20
Posts: 32

Re: Unknown fly

These are quite commonly recorded in moth traps, I certainly record this species very regularly. it is one of the few distinctive sickle wasp Ichneumonidae and is a parasitoid of various Noctuid moths.

Mike

Last edited by batch valley wildlife (2017-03-29 22:18:36)

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