Hispines of the World

 

Xenarescus Weise 1905f: 320

 

Synonomys

 

None.

Type Species

 

Hispa monocera Olivier.

Diagnosis

 

Xenarescus can be distinguished by the following combination of characters:

  • the lateral margins of the pronotum and the elytra without long, stiff spines
  • the head with a long frontal horn which is cuspidate
  • antennomere 1 with a curved, short spine-like process near apex
  • prosternum with a small carina between mesocoxae
  • pronotum with a seta is each anterior angle

Description

 

Body elongate, parallel-sided.

Head: vertex concave; frontal horn long, cuspidate, curved; area behind horn depressed.

Antenna: with 11-antennomeres; antennomere 1 simple in female or with a pointed ventral process.

Pronotum: quadrangular, longer than wide, weakly convex; punctured pit before middle on each side (deepens in male); seta present in anterior angle; posterior margin with transverse sulcus.

Scutellum: triangular.

Elytron: costae united, first and second separate behind middle; male with tooth‑like tubercle and carina at humerus; apex emarginate at suture, male with spoon‑like projection on exterior apical angle.

Venter: prosternum forms small carina sloping back to mesocoxae.

Distribution

 

Brazil, Colombia, Tobago, Trinidad, and Venezuela.

World Fauna

 

Described species: 1- Xenarescus monoceros (Olivier) (Staines 2013).

Hosts

 

Musaceae, Heliconia spp. (Heliconiaceae), Stromanthe (Marantaceae).

References

 

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

Weise, J. 1905. Bemerkungen über Hispinen. Deutsche Entomologische Zeitschrift 1905:317‑320.

 

Content last updated April 2014
idtools.org