''Clubiona rosserae'', or Rosser's sac spider, is a rare species of

sac spider The sac spiders of the family Clubionidae have a very confusing taxonomic history. Once, this family was a large catch-all taxon for a disparate collection of spiders, similar only in that they had eight eyes arranged in two rows and conical anter ...

native to wetlands of Great Britain. Though once feared to be

extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

, a colony was discovered in 2010 at

Chippenham Fen Chippenham Fen and Snailwell Poor's Fen is a biological Site of Special Scientific Interest south-east of Fordham in Cambridgeshire, England. It is a Nature Conservation Review site, Grade I, a Ramsar wetland site and a Special Area of Conservat ...

in Cambridgeshire. It can also be found at the Cavenham-Icklingham Heaths

Site of Special Scientific Interest A Site of Special Scientific Interest (SSSI) in Great Britain or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland is a conservation designation denoting a protected area in the United Kingdom and Isle of ...

(SSSI) in north Suffolk.Cavenham-Icklingham Heaths
, SSSI citation, Natural England. Retrieved 2013-01-26.

References

Clubionidae Spiders of Europe Spiders described in 1953 {{clubionidae-stub