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980 Views 4 Replies Last post: Oct 6, 2011 6:02 PM by jennie RSS
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Oct 5, 2011 6:04 PM

I'm hoping i'll have more luck here identifiying this fly...

Anyone know what species this is?
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  • It is the family Lonchaeidae. Flies from that family are difficult to identify from pictures but the over-all impression is that of Setisquamalonchaea fumosa. No guarantee, though, that it is that species.

     

    Paul

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      • If it is indeed Setisquamalonchaea fumosa, then it might be a case of the onset of decay in plants. The species has been reared from all kinds of decaying vegetable matter (I have seen a long series reared from rotting beetroot leaves). This year I collected many specimens in our museum garden and at the time they were almost exclusively found on stalks of Verbascum that hardly had any flowers left, where seed-formations seemed to be going but where also remnants of petals started to decay and some mould was developing. The adults seemed to be feeding and I did not observe oviposition but that may be because the stalks were actually to dry, I think, for larval development. So, I think decay of plant matter may attract them and, depending on the level of humidity, it will be used for feeding only or for both feeding and oviposition.

         

        Paul
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