Hispines of the World

 

Mecistomela Jacobson 1899: 246

 

Synonomys

 

None.

Type Species

 

Alurnus marginata Thunberg.

Diagnosis

 

Mecistomela can be distinguished by the following combination of characters:

  • the lateral margin of the pronotum and the elytra lacking long, stiff spines
  • the head lacking a frontal horn
  • the pronotum having a tuft of setae in each angle
  • the antennae having 11-antennomeres, subserrate, with antennomere 4 nearly as long as 3
  • the elytral punctures being large, rugose
  • the elytra lacking costae
  • the elytra being subparallel

Description

 

Body large (23-34 mm), elongate ellipse.

Head: flat or slightly convex between eyes; frons with small depressions on anterior margin; interantennal keel absent; sulci near eye faint; punctation dense and irregular.

Antenna: with 11-antennomeres, short, sparsely pubescent, each antennomere with ventral asymmetrical apical expansion which diminishes in size from base to apex; antennomere 4 almost as long as 3.

Pronotum: transverse, slightly narrowing anteriorly; lateral margins almost parallel; densely punctate; slight basal impression present on each side of middle; with tuft of setae in each angle.

Scutellum: triangular.

Elytron: wider than pronotum; finely, densely punctate, punctures not in regular rows; no costae; margined laterally.

Leg: trochanters with tufts of setae.

Black, pronotum and elytra with orange markings.

Distribution

 

Brazil.

World Fauna

 

Number of species: 1 (Staines 2012). Key to the species: Fischer (1935).

Hosts

 

Alagoptera, Copernicia, Cocos, Diplothemium, Elaeis, Lantania, Livistona, Phoenix (Arecaceae).

References

 

Fischer, C. R. 1935. Os coleopteros phytophagos da tribu Alurnini, pragas das palmeiras (Chrysomelidae, Hispinae). Revista de Entomologica Rio de Janiero 5:257-292.

Jacobson, G. G. 1899. De genere Alurno (Coleoptera, Chrysomelidae). Annuaire du Musée Zoologique de l'Académie Impériale des Sciences St. Pétersbourgh 4:245-256.

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

 

Content last updated April 2014
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