Requested reference
Allen, D. (2019). First record of the dictynid spider Nigma walckenaeri (Roewer, 1951) in Yorkshire. Newsletter of the British Arachnological Society 144: 29-30. 
-- Show included taxa
Allen, D. (2019). First record of the dictynid spider Nigma walckenaeri (Roewer, 1951) in Yorkshire. Newsletter of the British Arachnological Society 144: 29-30. -- Show included taxa