Description: Elongate-oblong, moderate-sized, ranging from about 10–14 mm in length. Integument generally dark brown or ferrugineous with whitish, ferrugineous, black, and ochraceous pubescence. Head with frons subquadrate, about as wide as width of 3–4 lower eye lobes. Eyes with lower lobes oblong to distinctly narrow. Genae elongate, about as tall as lower eye lobes. Antennal tubercles prominent, moderately separated; tubercles not armed at apex (females) or armed with a short, blunt horn (males); antennae about as long as overall body length (females), or as much as 1 1/3 times as long (males); 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 roughly parallel to attenuate; elytral apices individually rounded; elytra generally uniform in coloration or speckled, or with distinct maculae; base of elytra with two prominent tubercles at humeri. Basal 1/3 of elytra with dense punctation, surface coarsely punctate. Procoxae without projection (females) or with small acute projection or distinct, curved hook (males). 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: oblong to distinctly narrow eyes; elongate genae; sinuate antennomere III; base of elytra with two prominent tubercles at humeri; and moderately-long metafemora.
Similar genus/genera: superficially resembles Bucoides and Glypthaga.
Geographic Distribution
South America (Argentina, Bolivia, Brazil, Chile, Paraguay)
NOTE: Although Hesycha cribripennis was originally described from Chile (Fairmaire & Germain, 1859), this is likely an erroneous record as no members of this species have been collected there since.
Host Plants/Trees
Unknown
Girdling Behavior
Unknown. However, Martins (1975) reported that members of this genus oviposit in dead wood and are not believed to be girdlers of branches.
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