Ambracius Stål Ambracius Stål, 1860: 59 (n. gen.). Type species: Ambracius dufouri Stål, 1860 (fixed by Kirkaldy, 1906a: 146). Walker, 1873: 168 (list); Atkinson, 1890: 48 (cat.); Kirkaldy, 1906a: 146 (cat.); Kirkaldy, 1906b: 374 (note); Reuter, 1910: 154 (cat.); Carvalho, 1951a: 132 (list); Carvalho, 1952a: 50 (cat.); Carvalho, 1952b: 9 (note); Carvalho, 1955a: 23 (key); Carvalho, 1957: 37 (cat.); Carvalho and Gomes, 1971: 90 (cat.); Schuh, 1995: 587 (cat.); Ferreira, 1996: 271 (status change); Ferreira, 1998: 56 (cladistics, distr.); Ferreira, 2001: 229 (descr.). Fundanius Distant, 1884: 291 (n.gen.). Type species: Fundanius maculatus Distant, 1884 (fixed by Kirkaldy, 1906a: 135). Atkinson, 1890: 45 (cat.); Kirkaldy, 1906a: 135 (cat.); Reuter, 1910: 154 (cat.). Synonymized by Carvalho, 1948: 191. Ambrosius: Reuter, 1905: 9 (descr.) (misspelling of Ambracius Stål). Diagnosis: Species of Ambracius are distinguished by the strongly declivent head, convex vertex, and antennal fossa located above the maxillary-mandibular (loral-jugal) suture. The shining, more or less convex, and distinctly punctate pronotum, with the lateral margin marginate or angulate, and anterior margin extended over base of head in lateral view; hemelytron and scutellum more or less smooth; embolio-corial suture indistinctly punctate; and the ostiolar peritreme with a well-developed median lobe. Ferreira’s (1998) cladistic analysis indicated that Ambracius and Guanabarea Carvalho are sister groups that can be distinguished only by the hoodlike anterior margin of the pronotum extending over rear of head in Ambracius (versus the anterior margin of pronotum not hoodlike and not extending over base of head in Guanabarea).

Published as part of Ferreira, Paulo Sérgio F. & Henry, Thomas J., 2010, Revision of the genus Ambracius Stål, 1860 (Heteroptera: Miridae: Deraeocorinae: Clivinematini), with descriptions of three new species, pp. 1-15 in Zootaxa 2485 on page 2, DOI: 10.5281/zenodo.195528