Balyana (s. str.) Peringuey 1898: 115

Synonomys

None.

Type Species

Coelaenomenodera sculptilis Fairmaire.

Diagnosis

Balyana (Balyana) 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, with triangular projection over head, with or without pits or fossae
• anterior margin of prosternumprosternum:
  contains two anterior coxal cavities
  not projecting forward, not partly covering mouth
• less than 14 mm in length
• antennae with 7- or 8-antennomeres, without sensory pits on lower surface
• elytra with distinct longitudinal and transverse carinae forming an irregular net-like sculpture

Description

Elongate; parallel-sided; convex; elytra at base wider than 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
; color yellowish to black; 7.0-9.5 mm in length.

Head: vertexvertex:
occupies the area behind and between the eyes
punctate; with 2 transverse sulci above antennal insertions; tubercles absent at base of antennae; clypeusclypeus:
usually quadrangular, elongate; joined to the labrum
pubescent, emarginate; labrumlabrum:
triangular, joined to the clypeus and the oral orifice
short, curved, pubescent.

Antenna: short; rigid; with 7- or 8-antennomeres; apical antennnomere slightly longer than preceding 2 combined, punctate.

Pronotum: lateral margin emarginate at base, sinuate; anterior margin with a triangular projection over head; anterior and posterior angles acute; surface with depressions medially and laterally.

Scutellum: triangular; punctate.

Elytron: lateral margin straight, narrowly margined; exterior apical angle rounded; humerus rounded, not produced; with 10 rows of punctures interrupted by longitudinal and transverse carinae forming an irregular net-like sculpture.

Leg: tibiatibia:
variable in length; joins femur and tarsus
dilated apically, with small tooth near apex.

Distribution

Ethiopia, Madagascar, Malawi, Mozambique, Tanzania, Zimbabwe.

World Fauna

Described species: 5 (Staines 2012). Key: none.

Hosts

Medemia (Arecaceae).

References

Péringuey, L. 1898. Catalogue of the South African Hispinae (Coleoptera), with descriptions of new species. Annals of the SouthAfricanMuseum 1:113-130.

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