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

Species Latrodectus mactans - Southern Black Widow


Comparative Biology of American Black Widow Spiders
By B. J. Kaston
San Diego Soc. Nat. Hist. Trans. 16(3): 33-82, 1970
PDF with detailed descriptions, drawings & a few photos.

Link to http://archive.org.

Spiders of the genus Euryopis from North and Central America (Araneae, Theridiidae)
By Levi, H. W.
American Museum Novitates 1666: 1-48, 1954
http://www.wsc.nmbe.ch/reference/3103

New spiders from Texas
By Willis J. Gertsch & L. Irby Davis
American Museum Novitates 881: 1-21, 1936

The spider genera Achaearanea, Theridion and Sphyrotinus from Mexico, Central America and the West Indies (Araneae, Theridiidae)
By Herbert W. Levi
Bulletin Museum of Comparative Zoology, Harvard 121: 57-163, 1959

The spider genera Stemmops, Chrosiothes, and the new genus Cabello from America
By Herbert Levi
Psyche, Cambridge 71: 73-92, 1964

Spiders of the new genus Theridiotis (Araneae: Theridiidae)
By Herbert Levi
Transactions of the American Microscopical Society 73: 177-189, 1954

The Spider Genus Theridula in North and Central America and the West Indies (Araneae: Theridiidae)
By Herbert W. Levi
Transactions of the American Microscopial Society vol. LXXIII no. 4, Wiley, 1954
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The spider genera Crustulina and Steatoda in North America, Central America, and the West Indies (Araneae, Theridiidae)
By Herbert W. Levi
Bulletin of the Museum of Comparative Zoology Harvard 117: 367-424, 1957