Unipodal Anthomyiid

Submitted by colinleb on

Rather mangled specimen which I can't put through the key step by step cos many of the features of the legs are missing.  Rather small, length = 4.6 mm. Hairy eyes and long bristles at tip of cercal plate could be Lasiomma seminitidum?  Beds.  11 March 2020.  Swept from riverside willow.

Comments

I think it must be Lasiomma seminitidum Zett. because of the hairy eyes and the simple processes (lobes) of the fifth sternite. The surstyli in profile don't look quite right, but I think that this is because of the angle the photo is taken. The long setae on the cercal plate are also similar to those in seminitidum. I will have another look at the hairy eyes of some specimens of seminitidum to check the length as I don't recall them as being that long, but it is some time since I looked at one.