Neosibinia, Poinar & Legalov, 2015

Poinar, G & Legalov, AA, 2015, New Curculioninae (Coleoptera: Curculionidae) in Dominican amber, Palaeontologia Electronica 677 (1), pp. 1-15 : 10

Neosibinia gen. nov.

zoobank.org/ A9A7071C-9814-4345-8E0A-5405B9B74AE6

Type Species. Neosibinia lepidosoma sp. nov.

Diagnosis. Body with wide, densely placed scales, and some semi-erect narrow scales; head not constricted behind eyes; rostrum quite long, distinctly curved, especially in the middle; antennal scrobes lateral and directed toward base of rostrum; forehead narrow, flattened; eyes large, rounded, weakly convex; vertex weakly flattened, punctate; temples long, slightly larger than the eyes, punctate; antennae inserted beyond middle of rostrum, elongate, almost reaching base of pronotum; funicle with first to sixth antennomeres conical; club compact, elongate; pronotum elongate and bell-shaped; disk weakly convex, slightly narrowed at apex and base, densely punctate; scutellum wide trapezoidal; elytra elongate and weakly convex; greatest width behind the middle; humeri weakly convex; striae regular and distinct; ninth elytral striae short and connate with tenth striae; pygydium covered by elytra; procoxal cavities more or less equidistant from anterior and posterior margin of prosternum; procoxal cavities separated; suture between second and third ventrites markedly extended posteriorly towards lateral margins between third and fourth ventrites; legs long; femora weakly clavate, without teeth; apex of tibia without mucro and uncus; tarsal claws connate at base, large, with basal teeth.

Etymology. The generic epithet is from the Greek “νέος” = new and the genus “ Sibinia ”.

Comparison. The new genus differs from the genera Tychius Germar, 1817 and Sibinia Germar, 1817 by the tibiae lacking a mucro and uncus, the elongate pronotum distinctly narrower than the elytral humeri and the sharp bend in the rostrum.

Remarks. The abdomen with the suture between the second and third ventrites markedly extended posteriorly towards the lateral margins of the third and fourth ventrites places the genus in the tribe Tychiini .