Teretrispa Gressitt 1960b: 116

Synonomys

None.

Type Species

Teretrispa gahniae Gressitt.

Diagnosis

Teretrispa 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 frontal horn between antennae
• 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 tubercle on anterior ⅓ of lateral margin
• elytra without scutellar row, interspace 2 strongly costate
• prosternum prosternum:
  contains two anterior coxal cavities
  with anterior margin not projecting forward

Description

Body elongate; subparallel; subconvex; color brown with paler stripes; total length 8.6 to 10.0 mm.

Head: narrowing anteriorly; vertexvertex:
occupies the area behind and between the eyes
with medial sulcus; frontal horn ½ length antennomere 1; clypeusclypeus:
usually quadrangular, elongate; joined to the labrum
as wide as long.

Antenna: reaches to humerus; thickening apically; with 11-antennomeres; antennomere 1 subincrassate; 2 transverse, short; 3 longest.

Pronotum: obconic; lateral margin sinuate, with tubercle on anterior ⅓; anterior angle obliquely rounded; anterior margin curved; posterior angle acute; posterior margin bisinuate; surface deeply punctate.

Scutellum: cordate.

Elytron: lateral margin slightly expanding beyond middle; exterior apical angle rounded; apical margin subtruncate; humerus angulate, not produced; with 8 rows of punctures on basal ⅓, 7 at apical ½, expanding to 9 apically; tricostate, interspace 2 most raised.

Leg: short; robust.

Distribution

New Caledonia.

World Fauna

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

Hosts

Gahnia, Scleria (Cyperaceae); Orchidaceae.

References

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

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