Is this 6-7 mm fly from yesterday on a tree trunk (Ostwestfalen/Germany) a Heleomyzid (possibly the same species as here: http://www.dipter...ad_id=5273)? Thanks in advance!
Yes , it is a Tephrochlamys species (female )
but not http://www.diptera.info/forum/viewthread.php?forum_id=5&thread_id=5273,
(not Heleomyzids !)
Andrzej