Thread subject: Diptera.info :: Dolichopodidae - Pelastoneurus sp.
Posted by bradbarnd on 28-01-2012 19:42
#1
Collected at UV light, June 2011, Florida, USA. Size is 3 mm
I had initially thought this may be a Tachytrechus sp., due to the apparent elongated face. But the color pattern doesn't match any of the North American species. So maybe more along the lines of Paraclius or Pelastoneurus?
Edited by bradbarnd on 29-01-2012 00:50
Posted by bradbarnd on 28-01-2012 19:42
#2
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Posted by bradbarnd on 28-01-2012 19:43
#3
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Posted by bradbarnd on 28-01-2012 19:43
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Posted by Jason G on 28-01-2012 20:25
#5
What area have you roughley keyed it out to?
Posted by bradbarnd on 28-01-2012 20:38
#6
It went to couplet 22 of Manual of Nearctic Diptera's chapter on the family, which has Tanytrechus as an option. Beyond that are Pelastoneurus, Gymnopternus, Hercostomus, and Paraclius.
If its not Tanytrechus, as best I can tell it keys onwards to Paraclius.
Edited by bradbarnd on 28-01-2012 20:39
Posted by Marc Pollet on 29-01-2012 00:10
#7
Dear Bradbarnd,
It's an obvious
Pelastoneurus (see the bulging face). Another character is the ventral and dorsal pubescence of the arista that should be distinct and longer than the lateral one but this is not so easy to deduce from your pictures.
Dr Scott Brooks (ECORC, Ottawa, Canada) might be able to put a species name of this (unfortunately female) specimen.
Cheers,
Marc
Posted by bradbarnd on 29-01-2012 00:50
#8
Thanks Marc. I couldn't see the aristal hairs very well myself to judge their lengths. Its good to know that face is another characteristic to look for.