Requested reference
Levi, H. W. (1963b). American spiders of the genus Achaearanea and the new genus Echinotheridion (Araneae, Theridiidae). Bulletin of the Museum of Comparative Zoology 129: 187-240. 
-- Show included taxa
Levi, H. W. (1963b). American spiders of the genus Achaearanea and the new genus Echinotheridion (Araneae, Theridiidae). Bulletin of the Museum of Comparative Zoology 129: 187-240. -- Show included taxa