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Photo#187177
Wood-boring Tipulid - Ctenophora dorsalis - female

Wood-boring Tipulid - Ctenophora dorsalis - Female
Horner Park, Richmond Hill (N43º52'20"W079º24'40"), York Region, Ontario, Canada
May 31, 2008
Size: ~ 20 mm
Ontario data point. I observed this individual drilling in a birch limb to lay eggs. This and numerous ichneumonids were out on that day. The forest was moist as it had rained the previous day.