Isopedhispa Spaeth 1936a: 291

Synonomys

None.

Type Species

Isopedhispa ferruginea Spaeth.

Diagnosis

Isopedhispa can be distinguished by the following combination of characters:

• lateral margin of pronotumpronotum:
  occupies all of dorsal part of the prothorax; in anterior angles or posterior angles there may be a small tubercle or pore with a seta
  and elytra without long, stiff spines
• head with narrow frontal horn which is acuminate apically, with small lamina under antennal base visible from above
• antennomere 1 without spine-like process
• pronotum pronotum:
  occupies all of dorsal part of the prothorax; in anterior angles or posterior angles there may be a small tubercle or pore with a seta
  with anterior angles oblique, with seta in each anterior angle
• elytra with 8 rows of punctures basally plus scutellar row, 10 rows apically, costae visible on apical ½
• prosternum prosternum:
  contains two anterior coxal cavities
  with anterior margin not expanding forward

Description

Body elongate; depressed; subparallel; color black or reddish-brown; total length 8.5 to 9.5 mm.

Head: cephalic plate quadrate, medial sulcus present; frontal horn narrow, short, not as wide as long at base, acuminate apically; with small lamina under antennal bases visible from above; clypeusclypeus:
usually quadrangular, elongate; joined to the labrum
2x as long as wide; eyeeye:
elongate, slightly prominent, multifaceted; usually slightly kidney-shaped
large, convex.

Antenna: filiform; reaches to humerus; with 11-antennomeres; antennomere 1 incrassate, more than 2x length of 2; 2 obconic; 3 to 10 cylindrical, decreasing in length; 11 longer than 10, pointed at apex.

Pronotum: lateral margin sinuate, converging from base to apex, margined; anterior angle oblique, with seta and small tooth; anterior margin curved; posterior angle rounded; posterior margin bisinuate; surface punctate.

Scutellum: subtriangular.

Elytron: lateral margin straight, smooth; exterior apical angle rounded; apical margin truncate; humerus rounded, not produced; with 8 rows of punctures basally, 10 apically, plus scutellar row; tricostate, costae more visible on apical ½.

Venter: prosternumprosternum:
contains two anterior coxal cavities
with anterior margin not expanding forward.

Leg: short; robust; punctate.

Distribution

New Caledonia.

World Fauna

Described species: 2 (Staines 2012). Key: Gressitt 1960a, 1960b.

Hosts

Cocos (Arecaceae).

References

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

Gressitt, J. L. 1960b. Hispine beetles from New Caledonia (Chrysomelidae). Pacific Insects 2:101‑123.

Spaeth, F. 1933a. Studien über die Gattung Cryptonychus (Col. Chrys. Hisp.). Folia Zoologica et Hydrobiologica 5:1‑13.

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