Included taxa
Platnick, N. I. & Shadab, M. U. (1975b). A revision of the spider genera Haplodrassus and Orodrassus (Araneae, Gnaphosidae) in North America. American Museum Novitates 2583: 1-40. 
Species
| Species | Family | Page / figures | published as |
|---|---|---|---|
| Haplodrassus barberi | Gnaphosidae | 5 (too poorly illustrated to be recognized, type lost, nomen dubium) | Haplodrassus barberi |
| Haplodrassus bicornis | Gnaphosidae | 16, f. 23-30 (mf, S of Haplodrassus admes and H. uncifer) | Haplodrassus bicornis |
| Haplodrassus chamberlini | Gnaphosidae | 27, f. 63-70 (Dmf) | Haplodrassus chamberlini |
| Haplodrassus dixiensis | Gnaphosidae | 23, f. 39-46 (f, Dm) | Haplodrassus dixiensis |
| Haplodrassus eunis | Gnaphosidae | 20, f. 31-38 (mf, S of Haplodrassus utus) | Haplodrassus eunis |
| Haplodrassus maculatus | Gnaphosidae | 26, f. 55-62 (m, Df) | Haplodrassus maculatus |
| Haplodrassus mimus | Gnaphosidae | 24, f. 47-54 (f, Dm) | Haplodrassus mimus |
| Haplodrassus pacificus | Gnaphosidae | 5 (too poorly illustrated to be recognized, type destroyed, nomen dubium) | Haplodrassus pacificus |
| Haplodrassus signifer | Gnaphosidae | 11, f. 11-22 (mf, S of Drassodes ferrumequinum and Haplodrassus dystactus) | Haplodrassus signifer |
| Haplodrassus stuxbergi | Gnaphosidae | 7, f. 1-8 (mf) | Haplodrassus hiemalis |
| Haplodrassus taibo | Gnaphosidae | 29, f. 71-74 (f, Dm) | Haplodrassus taibo |
| Orodrassus assimilis | Gnaphosidae | 36, f. 87-94 (mf, S of Orodrassus durranti) | Orodrassus assimilis |
| Orodrassus canadensis | Gnaphosidae | 37, f. 95-102 (Dmf) | Orodrassus canadensis |
| Orodrassus coloradensis | Gnaphosidae | 32, f. 75-84 (mf) | Orodrassus coloradensis |
| Orodrassus vastus | Gnaphosidae | 32 (nomen dubium) | Orodrassus vastus |
| Parasyrisca orites | Gnaphosidae | 38, f. 85-86, 103-106 (f, Dm) | Orodrassus orites |
Genera
No genus found for this reference