Requested reference
Mikhailov, K. G. (2009). Procopius caesariensis vs. Procopius caesariensis Kauchtschischwili, 1933, a case of unusual confusion. Newsletter of the British Arachnological Society 114: 4-5. 
-- Show included taxa
Mikhailov, K. G. (2009). Procopius caesariensis vs. Procopius caesariensis Kauchtschischwili, 1933, a case of unusual confusion. Newsletter of the British Arachnological Society 114: 4-5. -- Show included taxa