Hispines of the World

 

Gestronella Weise 1911a: 47

 

Synonomys

 

None.

Type Species

 

Xiphispa centrolineata Fairmaire.

Diagnosis

 

Gestronella can be distinguished by the following combination of characters:

  • lateral margin of pronotum and elytra without long, stiff spines
  • head with frontal horn between antennae
  • antennae thickening apically, antennomere 1 without spine-like process, antennomeres 8 to 11 nearly fused
  • elytra with 8 rows basally plus scutellar row, 10 apically, with 4 costae

Description

 

Body elongate; subparallel; subdepressed; color brownish with dark longitudinal stripes or totally black; total length 8.5 to 12.0 mm.

Head: subquadrate; cephalic plate rectangular, coarsely punctate, with medial sulcus; frontal horn short, narrowing apically, shorter than antennomere 1; eye large, convex.

Antenna: thickening apically; as long as head and pronotum combined; with 11-antennomeres; antennomere 1 incrassate, longer than 2; 2 thick, cylindrical; 3 cylindrical, narrower and slightly longer than 2; 4 to 7 cylindrical, subequal in length, each shorter than 3; 8 to 10 transverse, subequal in length, each ¾ length of 7; 11 slightly longer than 10, pointed at apex.

Pronotum: longer than wide; lateral margin straight basally, sharply angulate anteriorly; anterior angle with tooth; anterior margin curved; posterior angle with 2 teeth; posterior angle bisinuate; surface irregularly punctate, with oblique carina in angulation of lateral margin.

Scutellum: elongate; triangular.

Elytron: lateral margin straight, smooth; exterior apical angle obliquely rounded; apical margin sinuate; sutural angle angulate; humerus rounded, not produced; with 8 rows of punctures at base, expanding to 10 rows after middle; with 4 costae.

Leg: short; robust; femur thickened; tibia shorter than femur, obliquely truncate apically.

Distribution

 

Madagascar.

World Fauna

 

Described species: 6 (Staines 2012). Key: none.

Hosts

 

Acanthophoenix, Cocos (Arecaceae).

References

 

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

Weise, J. 1911a. Coleopterorum Catalogus Chrysomelidae: Hispinae. W. Junk, Berlin. pars 35:1-94.

 

last updated April 2014
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