Acangarana, Nascimento & Bravo, 2018

Nascimento, Francisco E. De L. & Bravo, Freddy, 2018, Review of Acangassuini Galileo & Martins, 2001 (Insecta, Coleoptera, Cerambycidae), with description of a new genus and species, and description of two new species in the tribes Methiini Thomson, 1860 and Oemini Lacordaire, 1868, Zootaxa 4379 (4), pp. 576-584 : 578

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gen. nov.

Acangarana gen. nov.

Type species: Acangarana santossilvai sp. nov.

Etymology. The specific epithet is derived from the native Brazilian language Tupi-Guarani: Acanga = head; Rana = similar. The name refers to the similar head shape in both genera of the tribe.

Description. Head. Median groove distinct from clypeus to level of antennal tubercles. Gulamentum finely, transversely carinate between lower eye lobes; glabrous toward prothorax; with erect setae sparsely distributed. Distance between upper eye lobes about twice width of one lobe. Antennae about twice length of body, reaching elytral apex at middle of antennomere VI. Surface of scape slightly rugose. Scape, pedicel and external sides of antennomeres III–V with erect, sparse, elongate setae, about twice diameter of respective antennomere; setae at internal sides with about 1/4 of diameter of antennomere; remaining antennomeres only with short setae.

Thorax. Prothorax about 1.25 times longer than wide. Prosternum transversely carinate. Scutellum with pubescence on posterior margins. Elytra long, almost 4 times length of prothorax, roughly punctate; erect setae sparsely distributed; apex truncate.

Legs. Femora and tibiae with setae sparsely distributed on femora and more abundant on tibiae; tarsomere I as long as II + III.

Abdomen. Ventrites I–IV with sparse erect setae; ventrite V truncated at apex, and with abundant setae.

Remarks. Acangarana gen. nov. differs from Acangassu by the distance between the upper eye lobes about twice the width of one lobe, antennae about twice the body length, the antennomeres III–V with erect and elongate setae sparsely distributed and by absence of post-coxal carina in abdominal ventrite I. In Acangassu , the distance between the upper eye lobes is smaller than width of one lobe, the antennae are about 1.5 times the body length, with abundant short setae, and the abdominal ventrite I has post-coxal carina.