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Photo#43321
Small Winter Stonefly

Small Winter Stonefly
Ailsa Craig, Middlesex, Ontario, Canada
February 27, 2004
Size: about 6 mm
On snow covering concrete culvert over creek. The 3-segmented tarsus of the middle leg looks almost 2-segmented because the middle segment is just a tiny stub. More obvious is the wing venation: there's no trellis-like (or spider web-like) pattern of cells on the forewing, like there is in Taeniopterygidae such as this one.