Nerthra (Nerthra) nepaeformis (Fabricius, 1775) Naucoris nepaeformis Fabricius, 1775: 693.—HT: @, “ Antigua Insula”; ZMUC. Mononyx raptorius; Burmeister (1835: 201; non (Fabricius, 1803)). Mononyx raptorius; Amyot & Serville (1843: 425; non (Fabricius, 1803)). Mononyx raptorius; Herrich-Schäffer (1853: 27; non (Fabricius, 1803)). Mononyx bipunctatus Stål, 1854: 239 (syn. Stål 1868: 134).—HT: @, “Brasilia” [Brazil]; NHRS. Mononyx nepaeformis (Fabricius, 1775); Stål (1868: 134). Nerthra nepaeformis (Fabricius, 1775); Todd (1955: 371). Nerthra (Nerthra) nepaeformis (Fabricius, 1775); Faúndez & Ashworth (2015: 71). Distribution. Argentina (Berg 1879); Antigua Is. (Fabricius 1775); Brazil (Stål 1860); Chile (Los Ríos, Valparaíso) (Melin 1929, Todd 1957); Colombia (Stål 1876); Costa Rica (Pittier & Biolley 1895); French Guiana (Stål 1876); Guatemala (Champion 1901); Mexico (Torre-Bueno 1905); Paraguay (Todd 1955); Suriname (Bünzli 1935); Trinidad & Tobago (Kevan 1942); Uruguay (Ruffinelli & Pirán 1959).

Published as part of Damgaard, Jakob & Moreira, Felipe Ferraz Figueiredo, 2021, Water bugs (Hemipera: Heteroptera: Nepomorpha & Gerromorpha) of Chile phylogenetic and biogeographic considerations, and a catalog of the fauna, pp. 45-71 in Zootaxa 4958 (1) on page 60, DOI: 10.11646/zootaxa.4958.1.6, http://zenodo.org/record/4693036