Taxa included

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.

Taxon
Haplodrassus barberi (Banks, 1902) (Gnaphosidae) 5, (too poorly illustrated to be recognized, type lost, nomen dubium), Haplodrassus barberi
Haplodrassus pacificus (Banks, 1904) (Gnaphosidae) 5, (too poorly illustrated to be recognized, type destroyed, nomen dubium), Haplodrassus pacificus
Haplodrassus stuxbergi (L. Koch, 1879) (Gnaphosidae) 7, f. 1-8 (mf), Haplodrassus hiemalis
Haplodrassus signifer (C. L. Koch, 1839) (Gnaphosidae) 11, f. 11-22 (mf, S of Drassodes ferrumequinum and Haplodrassus dystactus), Haplodrassus signifer
Haplodrassus bicornis (Emerton, 1909) (Gnaphosidae) 16, f. 23-30 (mf, S of Haplodrassus admes and H. uncifer), Haplodrassus bicornis
Haplodrassus eunis Chamberlin, 1922 (Gnaphosidae) 20, f. 31-38 (mf, S of Haplodrassus utus), Haplodrassus eunis
Haplodrassus dixiensis Chamberlin & Woodbury, 1929 (Gnaphosidae) 23, f. 39-46 (f, Dm), Haplodrassus dixiensis
Haplodrassus mimus Chamberlin, 1922 (Gnaphosidae) 24, f. 47-54 (f, Dm), Haplodrassus mimus
Haplodrassus maculatus (Banks, 1904) (Gnaphosidae) 26, f. 55-62 (m, Df), Haplodrassus maculatus
Haplodrassus chamberlini Platnick & Shadab, 1975 (Gnaphosidae) 27, f. 63-70 (Dmf), Haplodrassus chamberlini Original description
Haplodrassus taibo (Chamberlin, 1919) (Gnaphosidae) 29, f. 71-74 (f, Dm), Haplodrassus taibo
Orodrassus coloradensis (Emerton, 1877) (Gnaphosidae) 32, f. 75-84 (mf), Orodrassus coloradensis
Orodrassus vastus (Banks, 1896) (Gnaphosidae) 32, (nomen dubium), Orodrassus vastus
Orodrassus assimilis (Banks, 1895) (Gnaphosidae) 36, f. 87-94 (mf, S of Orodrassus durranti), Orodrassus assimilis
Orodrassus canadensis Platnick & Shadab, 1975 (Gnaphosidae) 37, f. 95-102 (Dmf), Orodrassus canadensis Original description
Parasyrisca orites (Chamberlin & Gertsch, 1940) (Gnaphosidae) 38, f. 85-86, 103-106 (f, Dm), Orodrassus orites

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