*1: Abundant in two
freshwater ponds, Pendarves Wood, S. of Camborne, SW63, 1994,
PAG (BBSUK) (Long 1995b:
37).
Known from a single locality in Cornwall. It was
recorded there again in Aug. 1995
(SW647374, floating on water and at mud of edge of
small pond in woodland; DTH 95-270, 95-271,
DTH) and was still present on another small
pool nearby in 1998 (DTH).