Oxychalepus

Oxychalepus
Oxychalepus normalis by C.L. Staines
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Suborder: Polyphaga
Infraorder: Cucujiformia
Family: Chrysomelidae
Subfamily: Cassidinae
Tribe: Chalepini
Genus: Oxychalepus
Uhmann, 1937[1]

Oxychalepus is a genus of beetles belonging to the family Chrysomelidae.[2]

Species

Species Described by Habitats Length (adults) Appearance Notes
Oxychalepus alienus Baly, 1885 Colombia, Costa Rica, El Salvador, Honduras, Mexico, Nicaragua, Panama and Venezuela 7.6–9 mm Yellowish, with a black head, antennae and legs; both the pronotum and elytron have black markings[1] They have been recorded feeding on Centrosema macrocarpum and Cassia fruticosa.[2]
Oxychalepus anchora Chapuis, 1877 Argentina, Bolivia, Brazil, Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Trinidad and Venezuela 7.4–9.2 mm Black 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 marking[1] They 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.[2]
Oxychalepus angulatus Staines, 2010 Argentina and Bolivia[2] 10.9–11.1 mm Black head, antennae and legs, while the pronotum and elytron are orangish-yellow with black markings The species name is derived from Latin angulus (meaning corner or angle) and refers to the distinctly angulate lateral margin of the pronotum.[1]
Oxychalepus balyanus Weise, 1911 Belize, Colombia, Costa Rica, El Salvador, Guatemala, Honduras, Mexico (Baja California, Guerrero, Morelos, Jalisco, Tabasco, Tamaulipas, Veracruz, Quintana Roo)[3] and Nicaragua 6.3–8.7 mm Black head, antennae and legs, while the pronotum and elytron are orangish-yellow with black markings[1] They have been recorded feeding on Centrosema pubescens, Desmodium species, as well as Dioclea megacarpa.[2]
Oxychalepus bisignatus Chapuis, 1877 Argentina, Bolivia, Brazil and Ecuador[2] 6–8.6 mm Black 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 band[1]
Oxychalepus centralis Uhmann, 1940 Bolivia, Brazil and Paraguay[2] 7–9 mm They 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 marking[1]
Oxychalepus elongatus Chapuis, 1877 Brazil (Bahia), Paraguay and Venezuela[2] 9.5–10.4 mm They 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 spot[1]
Oxychalepus externus Chapuis, 1877 Argentina, Bolivia, Brazil (Rio de Janeiro, São Paulo), Colombia, French Guiana, Paraguay, Peru, Suriname and Venezuela 6.1–9.6 mm They 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 band[1] They have been recorded feeding on Inga affinis, Solanum auriculatum, Canavalia ensiformis, Canavalia spontanea, as well as Dioclea, Cimbosema and Phaseolus species.[2]
Oxychalepus insignitus Chapuis, 1877 Brazil (São Paulo)[2] 10.1–10.4 mm Adults are reddish-yellow with a black head, antennae and legs; the pronotum and elytron both have black markings[1]
Oxychalepus normalis Chapuis, 1877 Brazil, Costa Rica, Mexico, Panama and Venezuela 8.7–10.5 mm Adults 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 darker[1] The foodplant is unknown, but adults have been collected on Cassia species.[2]
Oxychalepus opacicollis Ramos, 1998 Brazil (Amazonas), Ecuador, Peru and Trinidad[2] 6.5–8.3 mm Orangish 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 area[1]
Oxychalepus paranormalis Ramos, 1998 Brazil[2] 9.1–10.4 mm Orangish 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 area[1]
Oxychalepus posticatus Baly, 1885 Brazil, Costa Rica, Nicaragua and Panama 10–11.6 mm Black 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 black[1]

They have been recorded feeding on Cassia oxyphylla, Cassia hayesiana and Cassia fruticosa.[2]
Oxychalepus proximus Guérin-Méneville, 1844 Bolivia, Brazil and Paraguay[2] 8–10 mm Black head, antennae and legs; the pronotum is yellowish with three black stripes and the elytron has a black anchor-shaped marking[1]
Oxychalepus trispinosis Pic, 1931 French Guiana[2] 7 mm Black head and antennae; pronotum and elytron are orangish The placement of this species in the genus Oxychalepus is uncertain.[1]

References

  1. ^ a b c d e f g h i j k l m n o p Staines, C.L. (2010). "A review of the genus Oxychalepus Uhmann, 1937 (Coleoptera: Chrysomelidae: Cassidinae)" (PDF). Zootaxa. 2573. Magnolia Press: 35–56. doi:10.11646/zootaxa.2573.1.2. Retrieved September 4, 2025.
  2. ^ a b c d e f g h i j k l m n o p Staines, C.L. (2012). "Hispines of the World: Tribe Chalepini" (PDF). USDA/APHIS/PPQ Science and Technology and National Natural History Museum. Retrieved August 26, 2025.
  3. ^ "Mexican leaf beetles (Coleoptera: Megalopodidae, Orsodacnidae, and Chrysomelidae): new records and checklist". ResearchGate. Archived from the original on 2024-11-09. Retrieved 2025-09-04.
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