Hesychotypa albofasciata, Pérez-Flores & Nearns, 2021

Pérez-Flores, Oscar & Nearns, Eugenio H., 2021, Two new species of Onciderini Thomson, 1860 (Cerambycidae: Lamiinae) from Mexico and Honduras, Zootaxa 5026 (1), pp. 145-150 : 146-148

Hesychotypa albofasciata sp. nov.

Figure 1 (A–D)

http://zoobank.org/ urn:lsid:zoobank.org:act:0E15BB69-6555-4626-AD15-35784F912BC1

Description. Holotype female. Integument mostly black; clypeus orange; labrum, last labial and maxillary palpomeres, vertex and coxae reddish-brown; antennomeres gradually dark brown toward antennomere XI.

Head. Frons elongate, finely and sparsely punctate, with abundant yellowish-brown pubescence not obscuring integument, and abundant yellowish-orange pubescence, denser close to eyes. Vertex impunctate; with two ochre pubescent bands on each side, the inner one longitudinal and the outer one oblique, surrounded by light yellowishorange pubescence. Area behind eye lobes impunctate, with yellowish-orange pubescence thinner and paler posteriorly. Median groove distinct from clypeus to prothoracic margin. Genae almost same length as lower eye lobe; with abundant yellowish-orange pubescence, sparse toward dorsal side. Postclypeus finely, somewhat sparsely punctate; with yellow pubescence on wide central area, with long, erect bright yellow setae laterally. Labrum almost convex, somewhat depressed at anterior half; with abundant bright yellow pubescence on posterior half, and long, brown setae on anterior half. Antennal tubercles elevate, horn-shaped, pubescence as on frons. Area of connection of eye lobes 0.51 times width of upper eye lobe. Distance between upper eye lobes 0.52 times length of scape; in frontal view, distance between lower eye lobes 0.92 times length of scape. Antennae 1.96 times elytral length, reaching elytral apex at posterior third of antennomere VII; scape, pedicel and antennomeres III–IV with pale yellow pubescence; remaining antennomeres with pale yellow pubescence covering basal half, and yellowish-brown pubescence toward apex; scape, pedicel and antennomeres III–V with erect, shorter, dark brown setae ventrally, very sparse in antennomeres VI–IX; antennomere III straight. Antennal formula (ratio) based on length of antennomere III: scape = 0.54; pedicel = 0.08; IV = 0.68; V = 0.57; VI = 0.50; VII = 0.49; VIII = 0.48; IX = 0.46; X = 0.45; XI = 0.42.

Thorax. Prothorax transverse, 1.62 times as wide as long; sides with tubercle from about posterior third to near middle, apex of tubercle conical, somewhat acute; basal and distal sulci distinct. Pronotum with three gibbosities, one central, elongate on posterior half; other two rounded on either side of first one, semi-elliptic, transverse, wider on central area, reaching sides of pronotum; coarsely, sparsely punctate on base of lateral tubercles and gibbosities, smooth on remaining surface; with yellowish-orange patches of pubescence, interspersed with yellow pubescence, and long, erect brownish-yellow setae on base and lateral tubercles. Prosternum, mesoventrite and metaventrite with pale yellow pubescence, denser and orangish laterally. Prosternal process arcuate, widened at base, with sparse, pale yellow pubescence. Mesanepisternum with yellowish-orange pubescence. Mesoventral process with distal margin concave, almost wider than mesocoxal cavity. Metanepisternum with yellowish-orange pubescence, some pale yellow on inner margin. Scutellum with yellowish-orange pubescence, and pale yellow laterally. Elytra. 4.82 times as long as prothoracic length; parallel-sided at basal 2/3, uniformly rounded toward suture at distal third; coarsely, deeply, abundantly punctate in basal third, punctures gradually sparser and smaller toward apex; humeri forming obtuse tubercle; with a wide, oblique, white fascia of pubescence on each elytron, about middle, not reaching elytral suture; and five longitudinal, yellowish-orange pubescent bands: two on basal third, one close to humerus, extending to white fascia, and another one on elytral suture, reaching anterior fifth; three irregular, extending along posterior third, partially fused about apex, outermost placed close to epipleura, innermost placed about center of dorsal surface; remaining surface with short pale yellow pubescence, mostly light yellow at middle. Legs. Mostly with pale yellow pubescence, yellowish-orange on dorsal surface of femora and tibiae, and some brown and ochre on tarsi; with long, erect brownish setae on tibia and tarsi. Protibiae with golden tuft of setae ventroapically; meso- and metatibiae dorso- and ventroapically. Metatarsomere I 0.58 times II–III together.

Abdomen. Ventrites with pale yellow pubescence, denser and yellowish-orange at sides; with two patches, of thick, short whitish-yellow setae; ventrite V with long, erect brownish setae; apex of ventrite V nearly truncate, widely emarginate centrally.

Dimensions (mm), female holotype /female paratypes. Total length, 22.32/19.00-15.40; prothoracic length, 3.24/2.80-2.23; anterior prothoracic width, 4.12/3.80-3.12; posterior prothoracic width, 4.78/4.60-3.28; maximum prothoracic width (between apex of lateral tubercles), 5.82/5.00-4.00; humeral width, 8.05/7.00-5.63; elytral length, 15.46/14.50-10.65.

Type material. Holotype female labeled. “ MEXICO: Veracruz, San Andrés Tuxtla, Estación de Biología Los Tuxtlas , 26-Junio-2018, 18.584659 N, - 95.074291 W, 530msnm, luz aditivos metálicos, 11 PM, bosque tropical perennifolio, O. Pérez col.” ( CNIN) . Paratypes. One female, same data as holotype except: 9-October-2018 ( CNIN); one female : “ HONDURAS, Dept. Yoro, 45 KM S. Tela, 800m, May 22, 1979, E. Giesbert, coll.” ( EFGC) .

Etymology. The specific epithet is derived from the Latin “albus” (white) and “fascia”, referring to pattern of pubescence on elytra. The compound specific epithet is a noun in apposition.

Diagnosis and remarks. This species is easily distinguished from congeners by each elytron with a wide, oblique, white fascia of pubescence, about middle, not reaching elytral suture. Hesychotypa albofasciata sp. nov. is similar to H. avrillasi Audureau, 2013 but differs as follows: pronotum with yellowish-orange and yellow pubescence (in H. avrillasi covered with whitish pubescence); white fascia of pubescence on elytra directed forward (in H. avrillasi is directed backwards); elytra with five longitudinal, yellowish-orange pubescent bands (in H. avrillasi mostly mottled). This species is described based on three females and nothing is known about its biology.

Figures

FIGURE 1. A–D) Hesychotypa albofasciatus sp. nov., holotype female: a) Dorsal habitus; b) Lateral habitus; d) Head, frontal view; e) Abdominal ventrites.