Family: Anthribidae |
Neoxenus new genus (G. neo, new; G. xenos, a stranger); masculine gender. Type species: Neoxenus versicolor Valentine, new species. [USA: Texas]. =Notioxenus, Suffrian, 1870, Jordan, 1907, and other authors, not Wollaston, 1861. Diagnosis. A genus of Araecerini with antennae inserted between the eyes on the frons; mandibles without a preapical tooth; head not retractile past the eyes; eyes round, lateral; antennal club very asymmetrical; sides of prothorax without a lateral carina, dorsal transverse carina antebasal; elytra with scutellar plus ten rows of punctures. Description. ♂,♀, 1.25-3.5 mm. elongate, alate, elytra about 2 to 3 times length of prothorax; pubescence varying from short and fine to long and unkempt, not hiding surface sculpture. Rostrum broader than long, continuously convex with frons, narrowest at base, apex truncate or faintly convex; mandible bases protruding laterally; postmentum broadly emarginate, lobes rounded, variously sculptured, no longitudinal basal carina, the whole structure not flush with the ventral surface of the head (as is customary) but raised and set off from the rest of the head by a broad transverse groove; mandibles with double cutting edges, the ventral one hidden in dorsal view, without a preapical tooth, but a median one might be present. Antennae inserted a the inner, lower border of the eye; the scrobes contiguous with the eye, margin toothed on side opposite from eye; club asymmetrical. Eyes dorsolateral in position, round, not approaching on the frons, facets variable; no interocular puncture. Prothorax a little wider than long, dorsum punctate, usually deeply so, the interspaces minutely alutaceous or polished; mid-dorsal length about twice mid-ventral length; transverse carina strongly antebasal, arched towards the base medially, lateral carina absent, lateral carinula present or absent; front coxae narrowly separate, antecoxal strip narrow, about half the width of a coxa, postcoxal strip very narrow, almost horizontal, coxae incapable of touching mesothorax. Scutellum small, round, conical, with very fine pubescence forming a delicate tuft. Elytra separate, their bases with a raised margin following the curve of the transverse thoracic carina; ten striae or rows of punctures plus the usual short scutellar row, the striae sometimes indistinct or represented by a row of punctures. Venter with large punctures; mesosternal intercoxal process narrow, apex rounded, metacoxae elongate, transverse, well separate from mesocoxae. Legs robust, hind femora not reaching abdominal apex; first tarsal article shorter than 2 + 3, third with enlarged lobes, claws each with a long basal tooth.
Anotado por K.S. Orellana ORCID 0000-0002-4098-5823 (2022).
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