BioStor
 | The spider genera Achaearanea, Theridion and Sphyrotinus from Mexico, Central America and the West Indies (Araneae, Theridiidae) H W Levi (1959) Bulletin of The Museum of Comparative Zoology 121: 55-163 |
 | The spider genera Achaearanea, Theridion and Sphyrotinus from Mexico, Central America and the West Indies (Araneae, Theridiidae) H W Levi (1959) Bull. Mus. comp. Zool. Harv. 121: 57-163 |
 | The genera of the spider family Theridiidae H W Levi and L R Levi (1962) Bull. Mus. comp. Zool. Harv. 127: 1-71 |
 | The spider genus Thymoites in America (Araneae: Theridiidae) H W Levi (1964) Bulletin of The Museum of Comparative Zoology 130: 445-471 |