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Arthroplea congener

Arthroplea congener no longer occurs in the British Isles.  The only record is of a single adult male taken in 1920 at Stanmore, Middlesex.  Nymphs of this species live chiefly in the pools and margins of rivers and streams, where they cling to submerged plants and stones, although they may swim if disturbed.   They feed by filtering of gathering fine particulate organic detritus from the sediment.  There is one generation a year, which usually overwinters as eggs and emerges between May and June.

 


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