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Saturday
May092009

Alderfly

DateSat 2009-05-09

Not a stonefly, as I previously thought, but an alderfly (order Megaloptera, family Sialidae).  Probably species Sialis lutaria on the basis that this specimen was found next to still water; the other two similar UK species of Sialis prefer running water (M. Chinery, Complete British Insects, Collins, 2005, page 108).

Photo taken beside the large lake in Reading University grounds, Reading, UK on 2009-04-26.

AuthorTristram Brelstaff | CommentPost a Comment |
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