Amplaria shastae (Causey, 1958) Striaria shastae Causey, 1958, Proc. Biol. Soc. Washington 71: 182. Female syntypes from Samwel Cave, Shasta Co., California, (AMNH). Hoffman, 1999, Virginia Mus. Nat. Hist. Special Publ. 8: 208. Speostriaria shastae Causey, 1960, Proc. Biol. Soc. Washington 73: 26. Amplaria shastae Shear & Krecja, 2007, Zootaxa 1532: 25. This species is one of two presumed troglobites in the genus, both from northern California. Amplaria shastae retains eyes, while A. flucticulus (see above) is eyeless. Amplaria shastae, at 25 mm in length, is much larger than any other striariid species. Potentially present in other caves in Shasta Co., California.

Published as part of Shear, William A. & Marek, Paul E., 2024, The millipede family Striariidae Bollman, 1893. IX. The identity of Striaria californica Cook, 1899, and the new genus Bayaria for Striaria nana Loomis, 1936, with a key to genera and an annotated checklist of the Striariidae (Diplopoda, Chordeumatida, Striarioidea), pp. 524-544 in Zootaxa 5463 (4) on page 536, DOI: 10.11646/zootaxa.5463.4.4, http://zenodo.org/record/11612167