Key to South American genera of Acanthocinini (Coleoptera, Cerambycidae, Lamiinae) without erect setae on elytra; synonymies, transferences, revalidation, and notes on genera with erect setae on elytra Author Monné, Miguel A. 0000-0001-8825-3122 monne@uol.com.br Author Santos-Silva, Antonio 0000-0001-7128-1418 toncriss@uol.com.br Author Monné, Marcela L. 0000-0001-8825-3122 monne@uol.com.br text Zootaxa 2020 2020-10-21 4863 1 1 65 journal article 9030 10.11646/zootaxa.4863.1.1 95a73980-ea3b-47d6-9841-774c62b4d825 1175-5326 4416817 66DCE172-2486-450B-AD2C-2D80F573348E Atrypanius Bates, 1864 ( Figs. 98 , 110–121 , 122–130 ) Atrypanius Bates, 1864a: 46 Type species — Lamia conspersa Germar, 1823 (original designation). Nyssodrys Bates, 1864b: 149 . Type species — Nyssodrys sedata Bates, 1864 (Thomson subsequent designation, Thomson, 1864: 323 ). Nyssocuneus Gilmour, 1960a: 55 . Syn. nov. Type species — Nyssocuneus heyrovskyi Gilmour, 1960 (original designation). Nyssodrysina Casey, 1913: 309 . Syn. nov. Type species— Liopus haldemani LeConte, 1852 (original designation). Sternidurges Gilmour, 1959c: 329 . Type species— Sternidurges apicalis Gilmour, 1959 (original designation). Nyssodrysola Gilmour, 1962: 256 . Type species— Nyssodrysola stictica Gilmour, 1962 (original designation). Diagnosis. Prothoracic lateral tubercles placed on posterior third; prosternal process from about one-fourth to almost as wide as the width of the procoxal cavity; mesoventral process at least as broad as 3/4 of a mesocoxal cavity; basal metarsomere equal or shorter than the two following together. Number of species currently included: 28. Remarks. Gilmour (1960a) described Nyssocuneus for his new species N. heyrovskyi . According to him: “This new genus is somewhat allied to Nyssodrys Bates , but may be immediately separated by the narrow prosternal process, the pygidium in female emarginate apically, eyes somewhat more widely separated above, and the more cuneat form. It does not fall into any of the groups into which Bates divided his genus Nyssodrys .” However, the features used by him to consider his Nyssocuneus as a new genus do not allow separating it from Atrypanius . For example, the prosternal process, described by him as having “about an eighth of the breadth of a procoxal cavity” is variable (from narrow to to almost as wide as procoxal cavity) in Atrypanius . In the same way, the mesoventral process was described as “broad, almost four times as broad as the prosternal, about half the breadth of a mesocoxal cavity”, which also is a feature present in Atrypanius (width also variable in this genus). Furthermore, the general appearance (body shape, prothoracic shape (including position and shape of the lateral turbercles), elytral shape, legs length and shape) make impossible to separate Nyssocuneus from Atrypanius . Accordingly, Nyssocuneus is considered a junior synonym of Atrypanius . Casey (1913) erected Nyssodrysina to include Liopus haldemani LeConte, 1852 , arguing: “The genus Nyssodrys of Bates, as now orgazined, is very composite, containing many inharmonious elements. No type species has been designated, but Mr. Bates has fortunately indicated those forms which he considers typical (Biol. Cent . Amer., Col., V, p. 179) and I would therefore formally select Nyssodrys deleta Bates , as the type of the genus. On this assumption it becomes possible to give the generic name to our Leiopus haldemani Lec. , which has recently placed in Nyssodrys , but which is not by any means congeneric with deleta . It differs in having a small acute oblique spine at each side of the prothorax very near the base, more convex upper surface of the body and femora clavate and not gradually thickened; the ovipositor is short, triangular, with rounded apical angle. The lower lobe of the eye is long and suboblong, being but slightly narrower below, the antennae not quite twice as long as the body, the sterna moderately wide between the coxae and the elytra are obliquely truncate at tip.” In fact, the designation of type species to Nyssodrys by Casey (1913) is not valid because Thomson (1864) had already designated N. sedata Bates, 1864 (= Liopus implexus Erichson, 1847 , currently, Atrypanius implexus ) as the type-species. As regarding Nyssocuneus , all features used by Casey to define Nyssodrysina are present in Atrypanius . Therefore, Nyssodrysina is considered a junior synonym of Atrypanius .