Coleoxestia moromokoi, Galileo, Maria Helena M. & Santos-Silva, Antonio, 2016

Galileo, Maria Helena M. & Santos-Silva, Antonio, 2016, Two new species of Coleoxestia Aurivillius, 1912 from Brazil (Coleoptera, Cerambycidae, Cerambycinae, Cerambycini), ZooKeys 612, pp. 125-132 : 127-130

Taxon classification Animalia Coleoptera Cerambycidae

Coleoxestia moromokoi sp. n. Figs 5, 6, 7, 8

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, sparsely punctate throughout; with short, moderately abundant setae on narrow lateral band and transverse area close to metacoxae; remaining surface with short, sparse setae interspersed with some long setae. Scutellum finely, abundantly punctate laterally, smooth centrally; with short setae laterally. Elytra. Shiny, finely, abundantly punctate throughout (punctures finer toward apex); apex somewhat obliquely truncate; outer angle with long spine; sutural angle with spine very distinct, but shorter than that of outer angle. Legs. Apices of meso- and metafemora with rounded lobe.

Abdomen. Ventrites finely, sparsely punctate; with short, sparse setae interspersed with some long setae; apex of ventrite V subrounded, slightly emarginate centrally.

Dimensions in mm (male). Total length, 15.10; length of prothorax at center, 2.40; largest width of prothorax, 2.75; anterior width of prothorax, 2.15; posterior width of prothorax, 2.30; humeral width, 3.30; elytral length, 10.4.

Type material.

Holotype male from BRAZIL, Amazonas: Ipixuna (Rio Liberdade, Estirão da Preta, 07°21'46.7"S / 71°52'07.1"W), 11-15.V.2011, J. A. Rafael, J. T. Câmara, R. F. Silva, A. Somavilla, and C. Gonçalves col. (INPA).

Etymology.

Tupi, moro = color; mokõî = two. Allusive to the femora orange with black apex.

Remarks.

Coleoxestia moromokoi sp. n. belongs to the group of species with femora reddish or orangish, distinctly contrasting with dark apex, and with elytral apex bispinose: Coleoxestia anthracina Martins & Monné, 2005; Coleoxestia brevipennis (Bates, 1870); Coleoxestia femorata (Gounelle, 1909); Coleoxestia guttula Martins & Monné, 2005; Coleoxestia polita (Waterhouse, 1870); Coleoxestia sanguinipes (Bates, 1884); Coleoxestia tupunhuma Martins & Monné, 2005. Coleoxestia moromokoi sp. n. differs from all these species by the pronotum not transversely rugose, while in these other species it is distinctly rugose.

Coleoxestia moromokoi sp. n. can be included in the alternative couplets “14” from Martins and Monné (2005) (translated):