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

Diagnostic Features
  • Description: Elongate-ovate, robust, moderate-sized, ranging from about 12–18 mm in length. Integument generally ferrugineous with whitish, ferrugineous, and ochraceous pubescence. Head with frons subquadrate to transverse, about as wide as width of four 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 distinctly shorter than overall body length, from about 1/2 to 2/3 as long; scape clavate, longer than antennomere IV; antennomere III strongly clavate or elliptical, longer than scape and antennomere IV. Pronotum transverse, roughly cylindrical, without lateral tubercles. Elytra with sides distinctly expanding to apex; elytral apices individually or jointly rounded; elytra with distinct maculae; base of elytra without prominent tubercles or with two prominent tubercles at humeri. Basal 1/3 of elytra with dense punctation, surface granulate-punctate. Procoxae without projection or with an obtuse tubercle. Mesosternal process with apex subtruncate. 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: distinctly small eyes, widely separated; distinctly short antennae; strongly clavate or elliptical antennomere III; and elytra with sides distinctly expanding to apex.

  • Similar genus/genera: strongly resembles Clavidesmus and Lachaerus.
Geographic Distribution
  • South America (Brazil, Peru)
Host Plants/Trees
  • Unknown
Girdling Behavior
  • Unknown

The genus Strioderes currently contains one species:
  Strioderes peruanus Giorgi, 2001 [♂ specimen]
  Strioderes peruanus Giorgi, 2001 [holotype specimen, ♂]
  • This species is rare in collections and is known from only three specimens.

    Generic Synonymies
    • None
    Selected References

    Strioderes peruanus
    ♂ 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.