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Chloropidae > Oscinellinae > Dasyopa????
female, body 1.5mm wing 1.3mm, collected from late-season Eupatorium flowers (at least I think that’s what it was). Semi-urban area of Maryland, north of Washington DC

I’d appreciate some help with this one. The closest I can come to an ID is Dasyopa triangulata based on what I can find in the Manual of Nearctic Diptera, Becker 2012 (https://www.biodi...3/mode/1up), Malloch 1918 (https://archive.o...tor-169733), and Sabrosky 1980 (https://www.biodi...item/54962). It appears to mostly fit Becker’s original description (as Siphonella) and BOLD’s images of that species (https://v3.boldsy...xid=458308) but it lacks the Malloch’s description as "mesopleurae [as] hairy on the upper posterior portion” in his original paper on this genus.

I’ve included some addition info/speculation on my BugGuide post (https://bugguide....ew/2309483).

Thanks in advance

Steve





dorsal view of right wing








there's an apical spur on the middle leg but not the hind legs
I don't see a tibial organ on the hind legs, consistent with Malloch's description of the genus ("...the hind tibiae without the sensory area"...)