Thread subject: Diptera.info :: Seep larvae from USA

Posted by John Carr on 07-12-2011 17:43
#1

These larvae were in a thin film of water on a vertical rock face near tree line (1400m) on the slope of Mount Washington, New Hampshire, USA on June 8, 2011. Size is 5-6 mm.

I assumed they were diptera but did not find any family they might be. I hope I'll find them again next year and get better pictures.

farm4.staticflickr.com/3381/5813766612_326de5d918.jpg

In situ:
farm4.staticflickr.com/3136/5813134051_5a0bd52077.jpg

Posted by Tony Irwin on 07-12-2011 22:20
#2

My guess would be Psychodidae

Posted by John Carr on 08-12-2011 02:34
#3

I hadn't thought of Psychodidae. It doesn't look much like the common drain fly (Clogmia albipunctata). The guide to American aquatic insects says they do live in rock seeps and have secondary segmentation, which appears to be present here.

Posted by atylotus on 08-12-2011 15:40
#4

Although a psychodid was my first impression too, I cannot see the head, so perhaps some Atrichopogon-species may be possible too?