Platyauchenia Stürm 1843 Platyauchenia Stürm 1843: 358. Type species: Cassida latreillei Castelnau (= Platyauchenia limbata Stürm), by monotypy. Spaeth 1914: 4 (catalog), 1917: 24 (nomenclatural note); Maulik 1933: 669 (immatures); Blackwelder 1946: 733 (faunal list); Uhmann 1957: 48 (catalog); Staines 2002: 745 (key to genera). Sphaeropalpus Guérin-Méneville 1844: 285. Type species Sphaeropalpus cincta Guérin-Méneville, by monotypy. Boheman 1850: 6 (synonymy); Chapuis 1875: 360 (generic treatment). Diagnosis. Head: clypeus transverse, deeply sulcate; maxillary palp with 4 palpomeres, palpomeres 1 to 3 short, equal in length and width, cylindrical, IV large, rounded, truncate. Antenna: filiform, apical antennomere widest. Pronotum: nearly as wide as base of elytra, widest at base, narrowing anteriorly; lateral margin evenly arcuate from base to apex; disc highly convex, depressed laterally on each side of disc; basal and anterior margins bisinuate. Scutellum: triangular, rounded at apex. Elytron: convex; punctate; widest in middle, narrowing anteriorly and posteriorly; margined laterally; basal and sutural margins yellowish.

Published as part of Staines, C. L., 2007, A new species of Platyauchenia Stürm, 1843 (Coleoptera: Chrysomelidae: Cassidinae) from Brazil, pp. 1-7 in Insecta Mundi 2007 (12) on page 1, DOI: 10.5281/zenodo.4532607