Thread subject: Diptera.info :: Tachinidae 2013-VI-24 (= ?Triarthria setipennis)

Posted by John Carr on 29-06-2013 01:14
#1
Fly flew inside on a hot day. Massachusetts, USA June 24, 2013.

farm8.staticflickr.com/7384/9129674573_46ee6241aa_z.jpg
(Click for very large size, or view on Flickr.)

farm4.staticflickr.com/3797/9131878960_6b5c7a4bef.jpg
(Click for larger size.)

farm3.staticflickr.com/2863/9129674657_9fcd2b0aa6_c.jpg
Edited by John Carr on 29-06-2013 14:25

Posted by ChrisR on 29-06-2013 11:21
#2
What size is it? Looks a bit like Triarthria to me but I'm not sure what you have in the US. We really need to build up a much bigger group of keen amateurs in the US to study tachinids and to develop the keys :)

Posted by John Carr on 29-06-2013 13:56
#3
Body length 6.6 mm.

Posted by John Carr on 29-06-2013 14:25
#4
ChrisR wrote:
What size is it? Looks a bit like Triarthria to me but I'm not sure what you have in the US. We really need to build up a much bigger group of keen amateurs in the US to study tachinids and to develop the keys :)


We have Triarthria setipennis introduced and known from Massachusetts. The arista looks right for Triarthria. The key in Manual of Nearctic Diptera is too confusing for any degree of confidence. The last few couplets are at least arguably consistent with that species.