Requested reference
Merrett, P. (1972). Haplodrassus umbratilis, a gnaphosid spider new to Britain, from the New Forest. Journal of Zoology, London 166: 179-183. 
-- Show included taxa
Merrett, P. (1972). Haplodrassus umbratilis, a gnaphosid spider new to Britain, from the New Forest. Journal of Zoology, London 166: 179-183. -- Show included taxa