Nympharescus Weise 1905f: 320

Synonomys

None.

Type Species

Arescus separatus Baly.

Diagnosis

Nympharescus can be distinguished by the following combination of characters:

• the lateral margins of the 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 the elytra without long, stiff spines
• the head with a frontal horn which is truncate at apex
• antennomere 1 with a spine-like process near apex which is as long as 2
• prosternum prosternum:
  contains two anterior coxal cavities
  flat between mesocoxae
• 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 a seta in all angles
• mesocoxae separated by less than the diameter of a coxa

Description

Body elongate, parallel; color usually yellow or red with variable black markings, marking may be absent in some specimens.

Head: frontal horn truncate at apex; vertexvertex:
occupies the area behind and between the eyes
convex between eyes, impunctate.

Antenna: with 11-antennomeres; antennomere 1 with ventral process as long as 2; 3 longest.

Pronotum: quadrate, flattened; parallel-sided; seta present in all four angles; basal margin bisinuate; tooth present in anterior angle; posterior angle acute.

Scutellum: elongate, triangular.

Elytron: lateral margin with smooth raised edge or rim; tooth present in sutural angle; with 10 rows of punctures; no costae.

Venter: mesocoxae almost touching; prosternal process flat between mesocoxae.

Leg: exterior apical edge of tibiatibia:
variable in length; joins femur and tarsus
expanded backwards.

Distribution

Colombia, Ecuador, and Peru.

World Fauna

Described species: 7 (Staines 2012). Key to species: none.

Hosts

Heliconia (Heliconiaceae).

References

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

Weise, J. 1905. Bemerkungen über Hispinen. Deutsche Entomologische Zeitschrift 1905:317‑320.