Two new species of Coleoxestia Aurivillius, 1912 from Brazil (Coleoptera, Cerambycidae, Cerambycinae, Cerambycini)

Abstract Two new species of Coleoxestia Aurivillius, 1912 are described from Brazil: Coleoxestia apeara, and Coleoxestia moromokoi. Both are included in a previous key.


Introduction
Currently Coleoxestia Aurivillius, 1912 contains 45 species distributed from North (Mexico) to South America (Monné 2015). Chemsak (2005a, 2005b) revised the species from Mexico and Central America, recognizing 12 species in the region. Martins and Monné (2005) revised the species from South America, recording 35 species in the continent. projected forward, subacute. Gula finely, transversely sulcate. Submentum opaque, microsculptured, coarsely, shallowly, sparsely punctate (punctures laterally confluent); with short, yellowish, moderately abundant setae interspersed with long setae (more abundant laterally). Postclypeus finely, abundantly punctate centrally, smooth laterally; with short, sparse setae on punctate area, with one long seta each side. Basal half of labrum coplanar with clypeus, finely, sparsely punctate, with short sparse setae, with tuft of very long setae laterally; distal half distinctly inclined, finely, abundantly punctate, with long, abundant setae. Distance between upper eye lobes 0.35 times length of scape; distance between lower eye lobes in frontal view 0.85 times length of scape. Antennae as long as 1.15 times elytral length; reaching elytral apex at base of antennomere XI. Scape slightly, gradually enlarged toward apex; finely, abundantly punctate; with short, sparse setae interspersed with some long setae. Antennomere III distinctly enlarged from base to apex, flattened from inner to outer surface; sensorial area wide, very distinct dorsally and ventrally, carinate on distal outer half; inner surface shiny; outer apex rounded. Antennomeres IV-X parallel-sided, with sensorial area wide and very distinct (gradually wider toward X), carinate on outer surface from base to apex; inner surface gradually more microsculptured from IV to X; distinctly flattened from inner to outer surface. Antennomere XI narrowed on distal third; entirely microsculptured. Antennal formula (ratio) based on antennomere III: scape = 0.61; pedicel = 0.15; IV = 0.77; V = 0.86; VI = 0.86; VII = 0.82; VIII = 0.78; IX = 0.78; X = 0.77; XI = 1.15.
Thorax. Prothorax slightly wider than long (largest width 1.1 times length); laterally with three gibbosities (central ones largest). Pronotum coarsely, abundantly punctate (punctures confluent on some areas), except for smooth central, longitudinal callosity on basal half, and subsmooth area close to anterior margin; with very short and sparse setae; with some long setae laterally on basal half. Sides of prothorax coarsely, densely, confluently punctate, except for anterior area with punctures smoother and less distinct; with very short, sparse setae interspersed with some long setae. Basal half of prosternum smooth, glabrous centrally, coarsely, abundantly punctate, with short, sparse setae laterally; anterior half transversely sulcate, coarsely, sparsely punctate on its basal third, smooth toward anterior margin, with short, sparse setae. Prosternal process smooth, glabrous centrally, with very short, abundant setae laterally; horizontal apex cordiform. Mesosternum microsculptured, coarsely, sparsely punctate; with short, abundant pubescence (not obscuring integument). Mesepimera and mesepisterna with short pubescence, not obscuring integument. Mesosternal process without tubercle, pubescent. Metepisterna with short pubescence, not obscuring integument. Metasternum finely, moderately sparsely punctate throughout, interspersed with coarse, sparse punctures each side of longitudinal sulcus; with short, abundant setae laterally, gradually sparser toward center, interspersed with long, sparse setae (more abundant each side of longitudinal sulcus). Scutellum with short, moderately sparse setae. Elytra. Shiny, finely, abundantly punctate, gradually finer toward apex; nearly all punctures with microscopic seta; apex somewhat obliquely truncate; outer angle with long, curved spine (outer side accompanying elytral curvature); sutural angle with distinct spine (shorter than that on outer angle). Legs. Apices of meso-and metafemora with rounded lobe.
Abdomen. Ventrites finely, sparsely punctate (slightly denser on V); ventrites I-IV laterally pubescent, with short sparse setae on remaining surface, interspersed with long setae centrally; ventrite V with short and long setae more abundant than on remaining ventrites; apex of ventrite V widely truncate.
Remarks. Coleoxestia apeara sp. n. belongs to the group of species without striae on pronotum and with antennomeres distinctly explanate laterally. Only C. cinnamomea (Gounelle, 1909), C. exotica C. ebenina Melzer, 1935 share both features with the new species. It differs from C. cinnamomea as follows: integument dark brown, almost black; elytral punctures finer; antennae in male surpassing elytral apex by antennomere XI. In C. cinnamomea the integument is from orangish to reddish-brown, the elytral punctures are fine, but distinctly coarser than in the new species, and the antennae in male surpass elytral apex by antennomeres X and XI. It can be separated from C. exotica by the elytra shiny (opaque in C. exotica) and by the basal antennomeres distinctly wider (narrower in C. exotica). It differs from C. ebenina mainly by the elytra shiny (more opaque in C. ebenina) and distinctly punctate (without distinct punctures in C. ebenina).
Coleoxestia apeara sp. n. can be included in the alternative of couplet "19" from Martins and Monné (2005)  Description. Holotype male. Integument black; mouthparts brown, with yellowish areas; antennae gradually dark-brown toward distal antennomeres; coxae brown; trochanteres and base of femora reddish-brown; remaining surface of femora orangish with black apex.
Head. Frons finely, moderately abundantly punctate on slightly tumid area close to clypeus, denser toward base of antennal tubercles; with deep pit each side close to clypeus; sides with carina between tumid area and antennal tubercles; with very short and sparse setae. Area between antennal tubercles sulcate. Area between upper eye lobes finely, abundantly punctate laterally, almost smooth centrally, mainly toward vertex; with moderately short, erect setae close to eyes. Vertex moderately coarsely, abundantly punctate; with very sparse, minute setae. Longitudinal sulcus slightly distinct from clypeus to antennal tubercles, becoming carina-shaped up to middle of upper eye lobes. Area behind upper eye lobes with sculpture as on vertex; with moderately short setae close to eyes and minute, very sparse setae on remaining surface. Area behind lower eye lobes longitudinally, widely sulcate close to eyes (almost smooth on this region), moderately coarsely, abundantly punctate toward prothorax. Antennal tubercles finely, sparsely punctate; with minute, sparse setae. Genae finely, moderately abundantly punctate; with minute, sparse setae. Gula shiny, smooth. Submentum microsculptured; with transverse row of coarse punctures close to gula; with short, moderately abundant setae interspersed with some long setae. Postclypeus moderately coarsely, confluently punctate centrally, smooth laterally; with very sparse, minute setae. Basal half of labrum coplanar with clypeus, and distal half distinctly inclined; coplanar region with long setae laterally. Distance between upper eye lobes 0.3 times length of scape; distance between lower eye lobes in frontal view 0.6 times length of scape. Antennae as long as 1.3 times elytral length; almost reaching elytral apex. Scape almost parallel-sided; finely, moderately abundantly punctate (mainly on basal third); with minute, sparse setae. Outer apex of antennomeres III-IV nodose; outer apex of antennomeres V-X dentate. Antennal formula (ratio) based on antennomere III: scape = 0.85; pedicel = 0.20; IV = 0.88; V = 0.94; VI = 0.88; VII = 0.88; VIII = 0.82; IX = 0.85; X = 0.82; XI = 1.23.
Thorax. Prothorax slightly wider than long (largest width 1.1 times length); laterally with three, slightly distinct gibbosities (central ones more distinct). Pronotum coarsely punctate on wide, longitudinal band each side of smooth central region, interspersed with fine, sparse punctures (area with coarse punctures slender middle, not reaching anterior margin); coarsely, confluently punctate laterally at basal 4/5; between these two coarsely punctate area with wide band with sparse, coarse and fine punctures; anterior fifth with transverse, well-marked sulcus and fine, sparse punctures; with minute and sparse setae (slightly more distinct laterally). Sides of prothorax coarsely, moderately abundantly punctate on wide central region (punctures confluent on some regions); with minute and sparse setae; with some long setae centrally close to pronotum; basal area smooth; anterior fifth with irregular sculpture. Prosternum finely, sparsely punctate on basal half (sparser centrally), with very sparse, minute setae; anterior half with two transverse sulci (the most distal distinctly narrow). Prosternal process glabrous centrally, with short, abundant setae laterally; horizontal apex somewhat rounded. Mesosternum with short, abundant setae (not obscuring integument). Mesepimera and mesepisterna with pubescence slightly denser than on mesosternum. Mesosternal process without tubercle, pubescent; apex deeply emarginate centrally. Metepisterna with short pubescence, not obscuring integument. Metasternum finely,