Requested reference
Raven, R. J. & Platnick, N. I. (1981). A revision of the American spiders of the family Microstigmatidae (Araneae, Mygalomorphae). American Museum Novitates 2707: 1-20. 
-- Show included taxa
Raven, R. J. & Platnick, N. I. (1981). A revision of the American spiders of the family Microstigmatidae (Araneae, Mygalomorphae). American Museum Novitates 2707: 1-20. -- Show included taxa