Hispines of the World

 

Octodonta Chapuis 1875: 289

 

Synonomys

 

Octodonta (Uhmannia) Spaeth 1936a: 282.

Type Species

 

Octodonta depressa Chapuis 1875.

Diagnosis

 

Octodonta can be distinguished by the following combination of characters:

  • lateral margin of pronotum and elytra without long, stiff spines
  • head with narrow, acuminate frontal horn between antennae, eyes prominent
  • antenna reaches to base of pronotum, antennomere 1 without spine-like process
  • pronotum with anterior angles prominent, with 2 teeth; seta present in each anterior angle
  • elytra with 8 rows of punctures plus scutellar row basally, 10 rows apically
  • prosternum with anterior margin not expanding forward

Description

 

Body elongate, narrow; subparallel; subdepressed; color yellowish to brownish with black markings.

Head: small; cephalic plate quadrate; frontal horn narrow, acuminate; labrum transverse, truncate; maxillary palps with palpomere 1 short, 2 and 3 obconic, 4 as long as 2 and 3 combined, oval; eye large, convex.

Antenna: filiform; reaches to base of pronotum; with 11-antennomeres; antennomere 1 oblong, large; 2 thinner, subequal in length to 3; 4 to 10 subcylindrical; 11 longer than 10, pointed at apex.

Pronotum: quadrate; lateral margin straight; anterior angle prominent, with 2 teeth, seta present; anterior margin curved; posterior angle emarginate; posterior margin bisinuate; convex; surface punctate.

Scutellum: pentagonal.

Elytron: lateral margin straight, smooth; exterior apical angle rounded; apical margin truncate; humerus angulate, not produced; with 8 rows of punctures plus scutellar row basally, 10 rows apically; weakly tricostate.

Venter: prosternum with anterior margin not expanding forward.

Leg: short; femur thick; tibia robust, emarginate medially.

Distribution

 

Indonesia, Malaysia, New Britain, New Guinea, New Ireland, Philippines, Taiwan, Thailand, Vietnam.

World Fauna

 

Described species: 10 (Staines 2012). Key: Gressitt 1957b, 1960a, 1963a.

Hosts

 

Calamus (Areceae); Aarchontophoenix, Areca, Chrysalidocarpus, Cocos, Corypha, Elaeis, Hyophorbe, Korthalsia, Livistonia, Metroxylon, Normanbya, Phoenix, Roystonea, Syagrus, Washingtonia (Arecaceae).

References

 

Chapuis, F. 1875. in J. T. Lacordaire, Histoire naturelle des insectes. Genera des Coléoptères, Vol. 11, Famille des Phytophages, 420 pp. Encylopédique de Roret; Paris.

Gressitt, J. L. 1957b. Hispine beetles from the South Pacific (Coleoptera: Chrysomelidae). Nova Guinea n. s. 8:205‑324.

Gressitt, J. L. 1960a. Papuan-West Polynesian hispine beetles (Chrysomelidae). Pacific Insects 2:1-90.

Gressitt, J. L. 1963a. Hispine beetles (Chrysomelidae) from New Guinea. Pacific Insects 5:591‑714.

Spaeth, F. 1936a. Ueber die Australasiathischen Cryptonychini. Temminckia 1:277-294.

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

 

Key player updated January 2018; content updated April 2014
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