Genus Amplaria Chamberlin, 1941

Amplaria Chamberlin, 1941, Bull. Univ. Utah 31: 9.

Type species Amplaria eutypa Chamberlin, by original designation. Hoffman, 1980, Classification of the Diplopoda, p. 127 (synonymized with Striaria Bollman, 1888); Hoffman, 1999, Virginia Mus. Nat. Hist. Special Publ. 8: 208. Shear & Krejca, 2007, Zootaxa 1532: 25 (revalidation of Amplaria). Shear, 2021a, Zootaxa 4908: 206. Distributed from southern British Columbia (unpublished records) south to San Diego Co, California, and also in the Sierra Nevada Mountains of California. A single species is known from Idaho. Nineteen species.

Speostriaria Causey, 1960, Proc. Biol. Soc. Washington 71: 25 (synonymized by Shear & Krejca 2007).

Type species, Striaria shastae Causey, 1958 .

Vaferaria Causey, 1958, Proc. Biol. Soc. Washington 71: 182. Shear, 2020, Zootaxa 4758: 282 (synonymized by Shear 2020).

Type species, Striaria imberbis Loomis, 1936 .

“ Vaferia ” lapsus for Vaferaria, Hoffman, 1999, Virginia Mus. Nat. Hist. Special Publ. 8: 210. Shear & Krejca, 2007, Zootaxa 1532: 26.