Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Genus Enoplognatha

The genera of the spider family Theridiidae
By Herbert W. Levi & Lorna R. Levi
Bulletin Museum of Comparative Zoology Harvard 127: 1-71, 1962

The spider genera Coressa and Achaearanea in America north of Mexico (Araneae, Theridiidae)
By Herbert W. Levi
American Museum Novitates 1718: 1-33, 1955

Cosmopolitan and pantropical species of theridiid spiders (Araneae: Theridiidae)
By Herbert W. Levi
Pacific Insects 9: 175-186, 1967

American spiders of the genus Achaearanea and the new genus Echinotheridion (Araneae, Theridiidae)
By Herbert W. Levi
Bulletin Museum of Comparative Zoology Harvard 129: 187-240, 1963
Full text at the Biodiversity Heritage Library:

The spider genera Steatoda and Enoplognatha in America (Araneae, Theridiidae)
By Herbert Levi
Psyche, Cambridge 69: 11-36, 1962

The fulva Group of the Spider Genus Steatoda
By W.J. Gertsch
American Museum novitates ; no. 1982, 1960

American spiders of the genera Audifia, Euryopis, and Dipoena (Araneae: Theridiidae)
By H.W. Levi
Bulletin of the Museum of Comparative Zoology, 129 (2): 121-185, 1963
Online here.

A revision of the genus Achaearanea (Araneae: Theridiidae)
By Hajime Yoshida
Acta Arachnologica 57(1): 37-40, 2008
This is the publication in which all North American Achaearanea were moved into Cryptachaea, Hentziectypus, and Parasteatoda... thus we no longer have genus Achaearanea in BugGuide's range.

PDF available online for free from publisher's website: