Requested reference
Leech, R. E. (1971). The introduced Amaurobiidae of North America, and Callobius hokkaido n. sp. from Japan (Arachnida: Araneida). The Canadian Entomologist 103: 23-32. 
-- Show included taxa
Leech, R. E. (1971). The introduced Amaurobiidae of North America, and Callobius hokkaido n. sp. from Japan (Arachnida: Araneida). The Canadian Entomologist 103: 23-32. -- Show included taxa