Hispines of the World

 

Parimatidium Spaeth 1938: 307

 

Synonomys

 

Xenispa Baly 1858: 63.

Type Species

 

Imatidium rubrum Boheman.

Diagnosis

 

Parimatidium can be distinguished by the following combination of characters:

  • the lateral margins of the pronotum and the elytra without long, stiff spines
  • the head without a frontal horn; mouthparts not projecting forward, interantennal carina not distinct
  • the pronotum with a seta in each anterior angle
  • the apex of the elytra without a tooth-like projection
  • the elytra without costae, rounded, posterior margin serrulate
  • the antennae with 11-antennomeres, filiform

Description

 

Head: posterior frons flattened and anterior part depressed; interocular space less than the width of an eye; eye large; interantennal carina and transverse carina behind labrum absent; labrum distinct; maxillary palp with palpomere 4 longer than 3.

Antenna: with 11-antennomeres, not thickened apically; antennomere 3 longer than 2; 11 longer than 10.

Pronotum: emargination on anterior margin shallow, without notch external to anterior seta; lateral margin strongly convergent from base to apex; lateral impressions absent; posterior angle sharp and acute.

Scutellum: broadly triangular.

Elytron: lateral margin laminate, serrulate externally toward apex, slightly indented behind humerus; with 10 rows of punctures plus scutellar row.

Venter: metepisternum distinct posteriorly; hypomera with transverse impression external to anterior coxal cavities.

Leg: tibia not pointed externally, excavated subapically.

Distribution

 

Bolivia, Brazil, Colombia, Costa Rica, Ecuador, French Guyana, México, Panamá, Paraguay, Peru, Venezuela.

World Fauna

 

Described species: 26 (Staines 2012). Key to the species: Spaeth (1938); Aslam (1965).

Hosts

 

Cocos, Geonoma (Arecaceae); Heliconia (Heliconiaceae); Bambusa, Chusquea (Poaceae).

References

 

Aslam, N. A. 1965. OnHispoleptis Baly (Coleoptera, Hispidae) and Imatidium F. (Coleoptera, Cassididae). The Annals and Magazine of Natural History (13)8:687-693.

Baly, J. S. 1858. Catalogue of Hispidae in the collection of the BritishMuseum. London, 172 pp.

Spaeth, F. 1938. Die Gattung Himatidium Fabr. (Col. Cassidinae). Revista de Entomología Rio de Janiero 9:305-317.

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

 

last updated April 2014
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