Thread subject: Diptera.info :: Seaweed fly identification

Posted by HHarland on 02-04-2013 18:09
#1
Hi
I collected some seaweed flies from the strandline of a beach on the south Devon coast on 18/03/13. Coelopa frigida and Coelopa pilipes are reported to be the most abundant seaweed flies at this site so i guess it could be one of them, however i'm struggling to find information on how to distinguish them. Also if anyone knows if this is a male or female and how you tell the difference that would be extremely helpful. (In the attached photo i have removed the back legs in order to give a clearer view of the abdomen.)
Thanks
Hannah

Posted by mossnisse on 02-04-2013 19:05
#2
It's a Clalyptrate fly (Muscidae / Anthomyzidae) And the thingies in the en of abdomen looks like male genitalia

Posted by Stephane Lebrun on 02-04-2013 20:20
#3
Yes, a male Fucellia (Anthomyiidae), another common shore fly.

Posted by HHarland on 02-04-2013 22:35
#4
Thank you both, that is very helpful.