Requested reference
Liu, M. Y. (1987a). Scanning electron-microscopic investigation on the terminal parts of the male bulbs in Pirata spp. Acta Zoologica Sinica 33: 44-50. 
-- Show included taxa
Liu, M. Y. (1987a). Scanning electron-microscopic investigation on the terminal parts of the male bulbs in Pirata spp. Acta Zoologica Sinica 33: 44-50. -- Show included taxa