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Photo#250710
Alderfly Larva - Sialis

Alderfly Larva - Sialis
Eramosa River, Guelph, Wellington, Ontario, Canada
January 13, 2009
Size: 9.0 mm
Crawling through detritus. Sialid larvae can be distinguished from Corydalid larvae by their smaller size and long, tapered tails.