Elaphrus viridis Horn, 1878

Bousquet, Yves, 2012, Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico, ZooKeys 245, pp. 1-1722 : 268

Elaphrus viridis Horn, 1878

Elaphrus viridis G.H. Horn, 1878b: 52 [primary homonym of Elaphrus riparius viridis Letzner, 1849] [potential nomen protectum]. Type locality: «California» (original citation), herein restricted to 9.5 miles south of Dixon, Solano County (see Goulet 1983: 292). Holotype [by monotypy] (♀) in MCZ [# 34043]. Note. Although it is obvious that infrasubspecific rank was meant for Elaphrus riparius viridis and many other names in Letzner’s work (1849), the fact that Csiki (1927: 420) treated it as a senior homonym makes the name subspecific from the date of its establishment (ICZN 1999: Article 45.6.4.1). However since the reversal of precedence (ICZN 1999: Article 23.9) could probably be applied to this case, I believe it is essential to preserve the current name of this endangered species.

Elaphrus horni Csiki, 1927: 420. Replacement name for Elaphrus viridis Horn, 1878.

Distribution.

This species is known from a small area in Solano County, California [see Goulet 1983: Fig. 168].

Records.

USA: CA

Note.

This species, also known under the vernacular name "Delta Green Ground Beetle", is considered an endangered species by the World Wildlife Fund and listed on the IUCN Red List of Threatened Species.