Requested reference
Levi, H. W. (1964d). American spiders of the genus Phoroncidia (Araneae: Theridiidae). Bulletin of the Museum of Comparative Zoology 131: 65-86. 
-- Show included taxa
Levi, H. W. (1964d). American spiders of the genus Phoroncidia (Araneae: Theridiidae). Bulletin of the Museum of Comparative Zoology 131: 65-86. -- Show included taxa