Included taxa
Platnick, N. I. & Shadab, M. U. (1976a). A revision of the spider genera Drassodes and Tivodrassus (Araneae, Gnaphosidae) in North America. American Museum Novitates 2593: 1-29. 
Species
| Species | Family | Page / figures | published as |
|---|---|---|---|
| Drassodes angulus | Gnaphosidae | 22, f. 61-68 (Dmf) | Drassodes angulus |
| Drassodes auriculoides | Gnaphosidae | 18, f. 49-56 (mf) | Drassodes auriculoides |
| Drassodes cacahuamilpensis | Gnaphosidae | 5 (nomen dubium) | Drassodes cacahuamilpensis |
| Drassodes gosiutus | Gnaphosidae | 12, f. 4, 29-36 (mf, S of Drassodes phanus and D. yavapainus) | Drassodes gosiutus |
| Drassodes hunterae | Gnaphosidae | 5 (nomen dubium) | Drassodes hunterae |
| Drassodes lapidosus | Gnaphosidae | 6, f. 5-8 (mf) | Drassodes lapidosus |
| Drassodes mirus | Gnaphosidae | 10, f. 21-28 (Dmf) | Drassodes mirus |
| Drassodes neglectus | Gnaphosidae | 7, f. 1, 3, 9-20 (mf) | Drassodes neglectus |
| Drassodes orizaba | Gnaphosidae | 5 (nomen dubium) | Drassodes orizaba |
| Drassodes pallidipalpis | Gnaphosidae | 5 (nomen dubium) | Drassodes pallidipalpis |
| Drassodes saccatus | Gnaphosidae | 15, f. 2, 37-48 (mf, removed from S of Drassodes neglectus, contra Banks, 1916: 69, S of D. celes, D. centralis and D. robinsoni) | Drassodes saccatus |
| Drassodes serratichelis | Gnaphosidae | 21, f. 57-60 (f, Dm) | Drassodes louisianus |
| Drassodes singularis | Gnaphosidae | 5 (nomen dubium) | Drassodes singularis |
| Herpyllus perditus | Gnaphosidae | 4 (Tmf from Drassodes) | Herpyllus perditus |
| Tivodrassus ethophor | Prodidomidae | 25, f. 69-72 (f, Dm) | Tivodrassus ethophor |
| Tivodrassus farias | Prodidomidae | 28, f. 79-80 (Df) | Tivodrassus farias |
| Tivodrassus pecki | Prodidomidae | 26, f. 73-76 (Dmf) | Tivodrassus pecki |
| Tivodrassus reddelli | Prodidomidae | 27, f. 77-78 (Df) | Tivodrassus reddelli |
Genera
No genus found for this reference