Sternidius alpha (Say, 1826) Lamia alpha Say, 1827: 270. Type locality — Syntypes: United States, Pennsylvania, Northwestern Territory (destroyed). Amniscus alpha var. divergens Haldeman, 1847: 48. Type locality— Holotype: United States, Pennsylvania (MCZN). Leptostylus lateralis Melsheimer, 1853: 108 (cat.). Type locality— Holotype: United States, Pennsylvania (MCZN). Liopus cinereus LeConte, 1852: 173. Type locality— Syntypes: United States, Georgia (MCZN). Liopus xanthoxyli Shimer, 1868: without page. Type locality— Holotype: United States, Illinois: Mount Carroll (USNM). Liopus alpha var. floridanus Hamilton, 1896: 125. Type locality— Lectotype: United States, Florida: Biscayne Key (USNM). Leiopus dentatus Casey, 1913: 312. Type locality— Holotype female: United States, Illinois (USNM). Leiopus testaceus Casey, 1913: 311. Type locality— Holotype female: United States, Diatrict of Columbia (USNM). Leiopus scapalis Casey, 1913: 312. Type locality— Holotype female: United States, Indiana (USNM). Leiopus pleuralis Casey, 1913: 312. Type locality— Lectotype; United States, District of Columbia (USNM). Leiopus timidus Casey, 1913: 313. Type locality— Holotype female: United States, Pennsylvania (USNM). Leiopus obscurellus Casey, 1913: 313. Type locality— Holotype female: United States, New York: Lake Champlain, Bluff Point (USNM). Leiopus nelsonicus Casey, 1924: 291. Type locality— Holotype female: United States, Virginia, Nelson County (USNM). Sternidius alpha coloradensis Dillon, 1956b: 216. Type locality— Holotype male: United States, Colorado: Colorado Springs (CASC). Sternidius alpha nigricans Dillon, 1956b: 218. Type locality— Holotype female: United States, New Mexico: Tajique (SEMK) Sternidius suturalis Dillon, 1956b: 218. Type locality— Holotype male: United States, Texas: Rockdale (TAMU). Distribution— United States (California, Arizona, Idaho, Colorado, to eastern seaboard, south to Florida), Canada (southern Quebec to the Lake of the Woods area in northwestern Ontario).

Published as part of Monné, Miguel A., Santos-Silva, Antonio & Monné, Marcela L., 2020, Key to Mexico and Central America genera of Acanthocinini (Coleoptera Cerambycidae, Lamiinae) without erect setae on elytral surface, excluding the Caribbean Islands, pp. 301-337 in Zootaxa 4861 (3) on pages 328-329, DOI: 10.11646/zootaxa.4861.3.1, http://zenodo.org/record/4416327