Oxychalepus is a genus of beetles belonging to the family Chrysomelidae.
Species SpeciesDescribed byHabitatsLength (adults)AppearanceNotesOxychalepus alienusBaly, 1885Colombia, Costa Rica, El Salvador, Honduras, Mexico, Nicaragua, Panama and Venezuela7.6–9 mmYellowish, with a black head, antennae and legs; both the pronotum and elytron have black markingsThey have been recorded feeding on Centrosema macrocarpum and Cassia fruticosa.Oxychalepus anchoraChapuis, 1877Argentina, Bolivia, Brazil, Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Trinidad and Venezuela7.4–9.2 mmBlack head and antennae, while the pronotum is yellow with a medial black band and two black lateral bands; the elytron is orangish-yellow with a black anchor-like markingThey have been recorded feeding on Canavalia ensiformis, Canavalia spontanea, Cymbosema species, as well as Solanum auriculatum, Calopogonium mucunoides, Phaseolus vulgaris, Phaseolus lunatus, Glycine max and Mucuna mutesiana.Oxychalepus angulatusStaines, 2010Argentina and Bolivia10.9–11.1 mmBlack head, antennae and legs, while the pronotum and elytron are orangish-yellow with black markingsThe species name is derived from Latin angulus (meaning corner or angle) and refers to the distinctly angulate lateral margin of the pronotum.Oxychalepus balyanusWeise, 1911Belize, Colombia, Costa Rica, El Salvador, Guatemala, Honduras, Mexico (Baja California, Guerrero, Morelos, Jalisco, Tabasco, Tamaulipas, Veracruz, Quintana Roo) and Nicaragua6.3–8.7 mmBlack head, antennae and legs, while the pronotum and elytron are orangish-yellow with black markingsThey have been recorded feeding on Centrosema pubescens, Desmodium species, as well as Dioclea megacarpa.Oxychalepus bisignatusChapuis, 1877Argentina, Bolivia, Brazil and Ecuador6–8.6 mmBlack head and legs; the pronotum has a spot on the anterior margin and two reddish triangular markings; the elytron is black with two yellow bands, united by a discal bandOxychalepus centralisUhmann, 1940Bolivia, Brazil and Paraguay7–9 mmThey have a black head, while the pronotum is orange with a large black medial spot. The elytron is orange with the apical one-fourth black and an anchor-like markingOxychalepus elongatusChapuis, 1877Brazil (Bahia), Paraguay and Venezuela9.5–10.4 mmThey have a black head, while the pronotum is orange with three black vittae. The elytron is orange with the apical one-fourth black and a black sutural vitta and spotOxychalepus externusChapuis, 1877Argentina, Bolivia, Brazil (Rio de Janeiro, São Paulo), Colombia, French Guiana, Paraguay, Peru, Suriname and Venezuela6.1–9.6 mmThey have a black head and antennae, while the pronotum is yellow, with a black medial band and two black lateral bands. The elytron is black, with a yellow oval spot and a yellow postmedial bandThey have been recorded feeding on Inga affinis, Solanum auriculatum, Canavalia ensiformis, Canavalia spontanea, as well as Dioclea, Cimbosema and Phaseolus species.Oxychalepus insignitusChapuis, 1877Brazil (São Paulo)10.1–10.4 mmAdults are reddish-yellow with a black head, antennae and legs; the pronotum and elytron both have black markingsOxychalepus normalisChapuis, 1877Brazil, Costa Rica, Mexico, Panama and Venezuela8.7–10.5 mmAdults are yellowish-red with a black head and antennae; the lateral margins of the pronotum are black and the elytron is yellowish-red with the suture at the base darkerThe foodplant is unknown, but adults have been collected on Cassia species.Oxychalepus opacicollisRamos, 1998Brazil (Amazonas), Ecuador, Peru and Trinidad6.5–8.3 mmOrangish pronotum with a black medial stripe and lateral margins; the apical one-fourth of the elytron is black and there are anchor-shaped black markings in the basal areaOxychalepus paranormalisRamos, 1998Brazil9.1–10.4 mmOrangish pronotum with one medial and two lateral black stripes; the apical one-fourth of the elytron is black and there is an anchor-shaped black marking in the basal areaOxychalepus posticatusBaly, 1885Brazil, Costa Rica, Nicaragua and Panama10–11.6 mmBlack antennae and legs; head is also black, but with an orangish spot; the pronotum is orangish with a black medial vitta and the elytron is orangish with basal black sutural vitta;
the apical one-fourth is also blackThey have been recorded feeding on Cassia oxyphylla, Cassia hayesiana and Cassia fruticosa.Oxychalepus proximusGuérin-Méneville, 1844Bolivia, Brazil and Paraguay8–10 mmBlack head, antennae and legs; the pronotum is yellowish with three black stripes and the elytron has a black anchor-shaped markingOxychalepus trispinosisPic, 1931French Guiana7 mmBlack head and antennae; pronotum and elytron are orangishThe placement of this species in the genus Oxychalepus is uncertain.
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