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

Diagnostic Features
  • Description: Elongate-oblong, small to moderate-sized, ranging from about 11–14 mm in length. Integument generally dark brown with pale gray and ochraceous pubescence. Head with frons elongate, slightly wider below eyes, about as wide as width of two lower eye lobes. Eyes with lower lobes small, ovate. Genae elongate, distinctly taller than lower eye lobes. Antennal tubercles prominent, moderately separated; tubercles not armed at apex; antennae slightly longer (females) to 1 1/2 times (males) as long as overall body length; scape clavate, about as long or shorter than antennomere IV; antennomere III feebly sinuate, longer than scape and IV; antennae annulate. Pronotum transverse, strongly conical, wider at base, without lateral tubercles. Elytra with sides nearly straight, strongly attenuate to apex; elytral apices individually rounded; elytra generally uniform in coloration to lightly speckled; base of elytra with two large, prominent tubercles at humeri; each tubercle strongly projecting, conical and obtuse. Basal 1/3 of elytra with moderate to dense punctation, surface coarsely punctate. Procoxae without projection. Mesosternal process with apex deeply emarginate. Metafemora moderate in length, about 1/2–1/3 as long as elytra.

  • The combination of the following characters will help to distinguish this genus: distinctly small eyes; strongly conical pronotum; humeri with two large, prominent tubercles; and strongly attenuate elytra.

  • Similar genus/genera: strongly resembles Cnemosioma, some species of Hypsioma, and Typhlocerus.
Geographic Distribution
  • South America (Argentina, Brazil)
Host Plants/Trees
  • Poaceae (Guadua trinii [bamboo])
Girdling Behavior
  • Unknown
Notes

The genus Agaritha currently contains one species:
  Agaritha iolaia Dillon & Dillon, 1945 [paratype specimen, ♂]
  Agaritha iolaia Dillon & Dillon, 1945 [holotype specimen, ♂]

Generic Synonymies
  • None
Selected References
 

Agaritha iolaia
paratype 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.