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Species Latrodectus bishopi - Red Widow

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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

A key and checklist of American spiders of the family Theridiidae north of Mexico (Araneae)
By Herbert W. Levi & Diane E. Randolph
The Journal of Arachnology 3: 31-51, 1975

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: http://biodiversitylibrary.org/page/4269668

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