Oncid ID: Tool for Diagnosing Adult Twig Girdlers (Cerambycidae: Lamiinae: Onciderini)
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Genus: Paratritania

Diagnostic Features
  • Description: Elongate-oblong, moderate-sized, ranging from about 13–19 mm in length. Integument generally dark brown or ferrugineous with whitish, ferrugineous, and ochraceous pubescence. Head with frons elongate, about as wide as width of two lower eye lobes. Eyes with lower lobes oblong. Genae elongate, distinctly shorter than lower eye lobes. Antennal tubercles prominent, narrowly separated, contiguous at base; tubercles armed at apex with a small projection, or with a short, blunt horn; antennae distinctly longer than body length, as much as twice as long; scape clavate, about as long or shorter than antennomere IV; antennomere III nearly straight or curved, longer than scape and antennomere IV, densely fimbriate beneath; antennomere XI shorter than X (females) or longer than X (males). Pronotum transverse, roughly cylindrical to conical, wider at base, with lateral tubercles. Elytra with sides roughly parallel to attenuate; elytral apices individually rounded; elytra with distinct maculae; base of elytra with two prominent tubercles at humeri. Basal 1/3 of elytra with moderate to dense punctation, surface coarsely punctate or granulate-punctate. Procoxae without projection or with an obtuse tubercle. Mesosternal process with apex deeply emarginate. Metafemora moderate to short in length, about 1/3–1/4 as long as elytra.

  • The combination of the following characters will help to distinguish this genus: narrowly separated antennal tubercles, contiguous at base; roughly cylindrical to conical pronotum, with lateral tubercles; base of elytra with two prominent tubercles at humeri; and apex of mesosternal process deeply emarginate.

  • Similar genus/genera: superficially resembles Hesychotypa and Ischiocentra.
Geographic Distribution
  • South America (Brazil)
Host Plants/Trees
  • Unknown
Girdling Behavior
  • Unknown
Notes

The genus Paratritania currently contains one species:
  Paratritania alternans (Aurivillius, 1920) [♂ specimen]
  Paratritania alternans (Aurivillius, 1920) [syntype specimen, ♂]

Generic Synonymies
  • The type species of this genus was originally described in the genus Ischiocentra.
Selected References
 

Paratritania alternans
♂ specimen
© E.H. Nearns

 

© 2011-2015 Nearns, E.H., Lord, N.P., and K.B. Miller
The University of New Mexico and Center for Plant Health Science and Technology, USDA, APHIS, PPQ.