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

Diagnostic Features
  • Description: Elongate-oblong, moderate-sized, ranging from about 12–13 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 ovate. Genae elongate, distinctly taller than lower eye lobes. Antennal tubercles prominent, moderately separated; tubercles not armed at apex or armed with a small projection; antennae about as long as overall body length, or as much as 1 2/3 times as long; scape clavate, about as long or shorter than antennomere IV; antennomere III sinuate, longer than scape and antennomere IV. Pronotum transverse, conical, wider at base, without lateral tubercles. Elytra with sides attenuate; elytral apices individually rounded; elytra generally uniform in coloration or speckled; base of elytra with two prominent tubercles at humeri. Basal 1/3 of elytra with moderate to dense punctation, surface finely punctate or coarsely punctate. Procoxae without projection or with small acute projection or with distinct, curved hook (males). Mesosternal process with apex deeply emarginate. Metafemora long to moderate in length, about 1/2–1/3 as long as elytra. Metatibiae distinctly expanded in males.

  • The combination of the following characters will help to distinguish this genus: pronotum without lateral tubercles; base of elytra with two prominent tubercles at humeri; moderate to long metafemora; and metatibiae distinctly expanded in males.

  • Similar genus/genera: strongly resembles Tibiosioma and superficially resembles Alexera, Furona, Neolampedusa, Plerodia, and Venustus.
Geographic Distribution
  • South America (Brazil)
Host Plants/Trees
  • Unknown
Girdling Behavior
  • Unknown

The genus Tulcoides currently contains two species:
  Tulcoides pura Martins & Galileo, 1990 [holotype specimen, ♂]
  Tulcoides tibialis Martins & Galileo, 2009 [holotype specimen, ♂]

Generic Synonymies
  • None
Selected References

Tulcoides pura
holotype 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.