Hispines of the World

 

Cryptonychus (s. str.) Gyllenhal 1817: &

 

Synonomys

 

Cryptonychus (Brachycryptonychus) Spaeth 1933a:5 Nomen nudum.

Cryptonychus (Aulocryptonychus) Spaeth 1933a: 6.

Cryptonychus (Cochleocryptonychus) Spaeth 1933a: 7.

Type Species

 

Hispa (Cryptonychus) porrecius Gyllenhal.

Diagnosis

 

Cryptonychus (Cryptonychus) can be distinguished by the following combination of characters:

  • lateral margin of pronotum and elytra without long, stiff spines
  • head with large frontal horn with keel and pits between antennae, labrum with tuft of setae on each side
  • antennae with 11-antennomeres, apical 5 antennomeres thickened, antennomere 1 short, thick, without spine-like process
  • pronotum with seta in each anterior angle
  • elytra with more than 8 rows of punctures basally plus scutellar row and 10 rows apically, with 4 distinct costae

Description

 

Elongate; subparallel; subdepressed; color reddish-brown with black markings; total length 6.0 to 17.0 mm, with iridescent sheen.

Head: short, wide; frontal horn large, with keel and pits; labrum with tufts of setae on each side; maxillary palps with palpomere 1 short, 2 and 3 obconic, nearly subequal in length, 4 longer, acuminate; eye large, convex.

Antenna: robust; thickening apically; as long as head and pronotum combined; with 11-antennomeres; antennomere 1 short, incrassate; 2 short, obconic; 3 oblong; 4 to 10 subequal in length; 11 longer than 10, pointed at apex.

Pronotum: transverse; lateral margin straight, convergent; anterior angle oblique, with seta; anterior margin straight; posterior angle acute; posterior margin bisinuate; surface lightly punctate.

Scutellum: cordate.

Elytron: lateral margin straight, smooth; exterior apical angle and apical margin rounded; humerus rounded, not produced; with 8 rows of punctures basally plus scutellar row, additional rows apically; with 4 distinct costae.

Leg: short; robust; femur thickened; tibia expanding apically, obliquely truncate at apex.

Distribution

 

Angola, Cameroon, Congo, Equatorial Guinea, Gabon, Guinea, Guinea Bissau, Mozambique, Nigeria, Senegal, Sierra Leone, South Africa, Togo, Uganda.

World Fauna

 

Described species: 25 (Staines 2012). Key: Spaeth 1933a, 1936a.

Hosts

 

Carex (Cyperaceae); Oryza (Poaceae); Amomum, Aframomum (Zingiberaceae).

References

 

Gyllenhal, L. 1817. In: Schönherr, C. J. Synonymia insectorum, oder: Versuch einer Synonymie aller bisher bekannten Insecten; nach Fabricii Systema Eleutheratorum geordnet. Vol. 1, pt. 3. Stockholm. 506 pp.

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

Spaeth, F. 1936a. Ueber die Australasiathischen Cryptonychini. Temminckia 1:277-294.

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

 

Content last updated April 2014
idtools.org