Heterrhachispa Gressitt 1957b: 272

Synonomys

None.

Type Species

Heterrhachispa kurandae Gressitt.

Diagnosis

Heterrhachispa 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 without frontal horn between antennae
• 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 seta in each angle, flattened, never constricted basally, lateral margin narrowly margined
• anterior margin of prosternumprosternum:
  contains two anterior coxal cavities
  not projecting forward, not partly covering mouth
• less than 14 mm in length
• elytra without transverse carinae forming an irregular net-like sculpture
• antennae with 6-antennomeres, antennomere 6 with sensory pits on lower surface

Description

Body small; parallel-sided; yellow with dark brown markings; length 2.9 to 3.5 mm.

Head: small; vertexvertex:
occupies the area behind and between the eyes
strongly punctate, depressed; with blunt projection between antennal bases; clypeusclypeus:
usually quadrangular, elongate; joined to the labrum
emarginate.

Antenna: as long as head and 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
combined; with 6-antennomeres; antennomeres 1 and 2 rounded, subequal in length; 3 longer than 1 or 2; 4 to 5 each shorter than 3; 6 longest, with sensory pits on lower surface.

Pronotum: quadrate; lateral margin sinuate, narrowly margined; anterior angle rounded; anterior margin slightly curved over head; posterior angle acute; posterior margin bisinuate; surface densely punctate; with basal impression and depression on each side after middle.

Scutellum: quadrate.

Elytron: lateral margin straight, smooth; exterior apical angle rounded; apex rounded, crenulate; sutural angle without tooth; humerus rounded, not produced; slightly constricted behind humerus; with 10 rows of irregular punctures, scutellar row absent; interspaces 4 and 8 costate, 2 and 6 carinate.

Venter: deeply punctate.

Leg: short.

Distribution

Australia.

World Fauna

Described species: 1- Heterrhachispa kurandae Gressitt (Staines 2012).

Hosts

Unknown.

References

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

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