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The Society for the study of flies (Diptera)

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#1 2018-11-22 22:29:04

Geoff F
DF Members
Name: Geoff Foale
From: South Devon
Registered: 2014-05-12
Posts: 219

Meiosimyza or Minettia?

Previously I have tended to ignore most 'orange flies' as being too difficult; but this year I have had a go at them, although with rather limited results.

This is a typical example where I am struggling, but maybe I am expecting too much when working from 'real life' photos. I seem to get this one to Meiosimyza possibly platycephala or Minettia possibly filia/plumicornis. I suspect Meiosimyza is the more likely.

Working from the Laurence Clemons keys.


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#2 2018-11-24 23:02:04

Geoff F
DF Members
Name: Geoff Foale
From: South Devon
Registered: 2014-05-12
Posts: 219

Re: Meiosimyza or Minettia?

I have returned to various photos from the wild and under studio conditions. My next question is how reliable are the ocellar bristles shape for an early stage in identification?

Pointing forward and parallel or slightly convergent for Minettia, Sapromyzosoma and a few others. Widely divergent for Meiosimyza, Sapromyza and several others?

I am also struggling to clearly find the Intra-alar bristle referred to in the keys. It makes sense when looking at diagrams but real life examples appear different. Although possibly all my examples are Minettia which would explain why I am not finding any variation.

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