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rosser's sac spider

Rosser’s Sac-spider Clubiona rosserae

Only known from two sites in Britain: Chippenham Fen, Cambridgeshire where it has been recorded on a number of occasions; and a single female found at Lakenheath Fen, Suffolk in April 2000. Image: Peter Harvey (BAS).

Find out more: iNaturalist, British Arachnological Society