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The Society for the study of flies (Diptera)

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#1 2017-08-06 22:06:59

Gateside
DF Members
Name: Nigel Gilligan
From: Cumbria
Registered: 2011-08-26
Posts: 877

Opomyza petrei female - does this look ok?

This matches well visually to the Dipterists Info images for this species, and I think the wing patterns match best to the same species in CM Drake's "A review of the British Opomyzidae".

The few features I can see properly in the images look to be consistent with the key. But I am trying to reconcile the illustrated lateral view of the ovipositor (5.c) for this species, with what I've got. Unless I wouldn't expect to see it excepting if the specimen has been dissected in some way, or the illustrated features can only be seen with a microscope.

Apart from that, I am confident I've got the right species ...

Nigel G.


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#2 2017-08-08 13:53:54

oxycera
DF Members
Name: John Coldwell
From: Barnsley
Registered: 2008-04-27
Posts: 298

Re: Opomyza petrei female - does this look ok?

I only have 2 petrei but they both have a relatively pale abdomen with a fairly broad, darker, central stripe. This may indicate a possible petrei in the field. The main distinguishing feature between this species and the abundant germinationis lies in the possession of a few very fine dark hairs in an area between the post-pronotal lobe and the front coxae, perfectly illustrated in fig.4g of Martin's review.
It is a microscopic feature very unlikely to be apparent in general 'field' photographs.

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#3 2017-08-08 16:10:38

Gateside
DF Members
Name: Nigel Gilligan
From: Cumbria
Registered: 2011-08-26
Posts: 877

Re: Opomyza petrei female - does this look ok?

Okay. Thanks John.

Nigel G.

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