Oxychalepus Uhmann 1937d: 467

Synonomys

Oxychalepus Uhmann 1936e: 614 Nomen nudum.

Type Species

Odontota proxima Guérin-Méneville.

Diagnosis

Oxychalepus can be distinguished by the following combination of characters:

• body wedge-shaped or oblong
• the lateral margins of the pronotumpronotum:
  occupies all of dorsal part of the prothorax; in anterior angles or posterior angles there may be a small tubercle or pore with a seta
  and the elytra without long, stiff spines
• the head without a frontal horn
• the pronotumpronotum:
  occupies all of dorsal part of the prothorax; in anterior angles or posterior angles there may be a small tubercle or pore with a seta
  with a seta in each anterior angle, finely margined, without lateral teeth
• the apex of the elytra without a tooth-like projection
• the elytra with 10 rows of punctures for entire length, scutellar row present or absent, with 4 regular costae, costa 3 incomplete, humerus angulate without spine or tooth, apex regularly conjointly rounded, sutural angle emarginate
• the antennae thickened at apex, with 11-antennomeres, antennomere 11 pointed at apex
• leg with apical tarsomere bearing 2 claws
• abdominal sterna 1 and 3 without medial sulcus
• anterior margin of prosternumprosternum:
  contains two anterior coxal cavities
  not expanding toward mouth

Description

Head: vertexvertex:
occupies the area behind and between the eyes
sulcate; slightly constricted behind eyes; projection present at base of antennaantenna:
3 to 11 segments, inserted in antennal pit in front of eyes
.

Antenna: with 11-antennomeres; antennomere 11 sharply pointed at apex; antennomeres 3 to 11 laterally compressed; 7 to 11 closely articulated.

Pronotum: trapezoidal or obconical, widest at base.

Elytron: lateral margin dentate; exterior apical angle rounded, dentate; apical margin strongly dentate; with 10 rows of punctures, scutellar row present or absent; 4 costae, 1, 2, and 4 complete, 3 visible at humerus and apex.

Distribution

Argentina, Bolivia, Brazil, Colombia, Costa Rica, Ecuador, El Salvador, French Guiana, Guatemala, Honduras, México, Nicaragua, Panamá, Paraguay, Peru, Suriname, Trinidad, Venezuela.

World Fauna

Described species: 15 (Staines 2012). Key: Ramos 1998, Staines 2010d.

Hosts

Cassia (Caesalpiniaceae); Calopogonium, Canavalia, Centrosema, Cimbosema, Cymbosema, Dioclea, Glycine, Inga, Mucuna, Phaseolus (Fabaceae); Solanum (Solanaceae).

References

Ramos, T. C. 1998. Revisão das espécies brasileiras de Oxychalepus Uhmann, 1937 (Coleoptera, Chrysomelidae, Hispinae). Revista Brasileira de Entomologia 41:305-315.

Staines, C. L. 2010d. A review of the genus Oxychalepus Uhmann, 1937 (Coleoptera: Chrysomelidae: Cassidinae). Zootaxa 2575:35-56.

Staines, C. L. 2012. Tribe Chalepini. Catalog of the hispines of the world (Coleoptera: Chrysomelidae: Cassidinae). http://entomology.si.edu/Collections_Coleoptera.html

Uhmann, E. 1936e. Amerikanische Hispinen aus dem Zoologischen Museum der Universität Berlin. V. Teil. Die Gattung Chalepus i. sp. Thunberg. 61. Beitrag zur Kenntnis der Hispinen (Col. Chrys.). Festschrift zum 60. Geburtstage von Professor Dr. Embrik Strand 1:613-629.

Uhmann, E. 1937b. Südamerikanische Hispinen aus dem Deutschen Entomolgischen Institut, Berlin-Dahlem. II. Teil. 63. Beitrag zur Kenntnis der Hispinen (Coleoptera: Chrysomelidae). Arbeiten über morphologische und taxonomische Entomologie aus Berlin-Dahlem 4:153-157.