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

Diagnostic Features
  • Description: Elongate-ovate, small-sized, ranging from about 7–10 mm in length. Integument generally dark brown with whitish, ferrugineous, and ochraceous pubescence. Head with frons elongate, about as wide as width of two lower eye lobes. Eyes with lower lobes ovate. Genae elongate, taller than lower eye lobes. Antennal tubercles prominent, moderately separated; tubercles not armed at apex or armed with a small projection, or with a short, blunt horn; antennae about as long as overall body length, or as much as 1 1/3 times as long; scape clavate, shorter than antennomere IV; antennomere III sinuate, longer than scape and antennomere IV. Pronotum transverse, roughly cylindrical to conical, wider at base, without lateral tubercles. Elytra with sides attenuate; elytral apices individually rounded; elytra generally uniform in coloration or speckled, or with distinct maculae; base of elytra with two prominent ridges at humeri. Basal 1/3 of elytra with dense punctation, surface coarsely punctate to granulate-punctate. Procoxae without projection. Mesosternal process with apex subtruncate to feebly emarginate. Metafemora moderate in length, about 1/3 as long as elytra.

  • The combination of the following characters will help to distinguish this genus: relatively small-sized; sinuate antennomere III; pronotum without lateral tubercles; and elytra with sides attenuate.

  • Similar genus/genera: strongly resembles Euthima but the elytral punctation is smaller and the pronotum is not as strongly conical.
Geographic Distribution
  • South America (Argentina, Bolivia, Brazil, Ecuador, Paraguay, Peru, Venezuela)
Host Plants/Trees
  • Unknown
Girdling Behavior
  • Unknown
Notes

The genus Lydipta currently contains four species:
  Lydipta conspersa (Aurivillius, 1922) [♀ specimen]
  Lydipta humeralis Martins & Galileo, 1995
  Lydipta pumilio Thomson, 1868 [type specimen]
  Lydipta senicula (Bates, 1865) [type specimen]

Generic Synonymies
  • Aenea
Selected References
 

Lydipta conspersa
♀ 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.