Length: insect in photo about 5 mm
The Nearctic genus Allocapnia contains 41 species.
Kondratieff and Kirchner (2000) note that most Allocapnia species are associated with temperate hardwood forests, and "apparently the genus evolved primarily with the Appalachian mountains and associated ridges."
Photo notes: 5 March 2006. Above a small pond, surrounded by oak-hickory forest. One of very few insects active on this date. Ruraldale, Upshur County, West Virginia.
GPS data: 39.0733, -80.2429. Elevation 365 meters.