Pseudastylopsis albus, Pérez-Flores & Santos-Silva, 2021

Pérez-Flores, Oscar & Santos-Silva, Antonio, 2021, New genus, new species and new records in Lamiinae (Coleoptera, Cerambycidae), Zootaxa 4965 (1), pp. 181-190 : 185-187

Pseudastylopsis albus sp. nov.

( Fig. 2 A-D)

http://zoobank.org/ urn:lsid:zoobank.org:act:E78A3AC7-3E69-4796-BD01-77485EE8B3BE

Description. Holotype female. Integument mostly dark brown. Genae, labrum, mouthparts, and coxae reddish brown. Clypeus reddish brown, orange anteriorly. Antennae, prothorax, meso- and metathorax dark reddish brown. Elytra and legs dark brown with irregular dark reddish-brown areas.

Head. Frons transverse, finely, shallowly, sparsely punctate; with yellowish-white pubescence, and two long, dark setae, one on each side near eyes. Vertex finely, sparsely punctate; with yellowish-white pubescence, and two spots of black pubescence close to margin of prothorax; with four short, erect, dark setae, two on each side near eyes. Antennal tubercles and area behind upper eye lobes with pubescence, and setae as on vertex, except spots of dark brown pubescence close to apex of antennal tubercles. Genae minutely, transversely striate; with moderately sparse yellowish-white pubescence; with one long, erect, dark seta on each side near eye. Postclypeus transversely divided by narrow carina, with anterior area lower than posterior one; with yellowish-white pubescence on wide central area; with one long, erect, dark seta on each side of wide central area. Labrum slightly inclined anteriorly; with sparse yellowish-white pubescence interspersed with long dark setae directed forward. Gulamentum smooth, glabrous on wide posterior area, depressed, with short yellowish-white pubescence anteriorly; with a few long, erect, dark setae on anterior margin. Distance between upper eye lobes 0.26 times length of scape; in frontal view, distance between lower eye lobes 0.56 times length of scape. Antennae 1.6 times elytral length, reaching elytral apex; scape with basal and apical black pubescent ring, and yellowish-white pubescence with small black pubescent spots interspersed centrally; pedicel with black pubescence; antennomeres III-IV with apical black pubescent ring, and remaining surface with irregular both yellowish-white and dark pubescent spots; antennomeres V-X with basal and apical dark brown pubescent ring, and yellowish-white pubescence centrally; scape and antennomeres III-X with a few erect, dark setae; antennomere XI with brownish pubescence. Antennal formula (ratio) based on length of antennomere III: scape = 0.87; pedicel = 0.11; IV = 0.85; V = 0.60; VI = 0.46; VII = 0.39; VIII = 0.29; IX = 0.27; X = 0.27; XI = 0.28.

Thorax. Prothorax with large, conical tubercle laterally about middle. Pronotum with five large gibbosities, one elongated, obtuse, on each side of middle; another one prominent, subelliptical, central, starting on posterior half; and one rounded, elongated on each side of anterior half; finely, shallowly punctate; with coarse, deep punctuation surrounding gibbosities, and near anterior and posterior margins; with yellowish-white, conspicuous pubescence, more abundant laterally; with six semicircular patches of short, appressed, black pubescence, three close to anterior margin (one centrally, and one on each side, which do not reach anterior gibbosities), and three close to posterior margin (same position as anterior ones), lateral patches extend to posterior gibbosities. Sides of prothorax with yellowish-white pubescence, dark on some areas; tubercle with one glabrous area toward posterior half; with a few short, sparse, erect dark setae on posterior half. Ventral surface of thorax with yellowish-white pubescence; with a few short, sparse, erect whitish setae on posterior area of metaventrite; prosternal process distinctly wide centrally, with its narrowest area about as wide as 1/3 of procoxal cavity; mesoventral process gradually narrowed toward its posterior third, then widened, with its narrowest area about as wide as 1/2 of mesocoxal cavity. Scutellum elongated, with yellowish-white pubescence. Elytra. Coarsely, abundantly rugose-punctate on basal half, sparsely, shallowly punctate on distal half; with centrobasal gibbous area slightly elevated; with moderately distinct, slightly oblique carina from gibbous area to posterior quarter, and another carina between the former and suture; apex truncate; mostly with dense yellowish-white pubescence, except: short, appressed black pubescence laterally, from humerus to after middle, with two projections toward dorsal surface, one short slightly projected on anterior quarter, another large, reaching laterodorsal carina; one black pubescent macula on side of posterior third, slightly reaching dorsal surface; narrow black pubescent macula laterally close to apex; with inverted comma-shaped black pubescent macula dorsally near suture just after middle; with oblique black pubescent macula on posterior third, ascendant from suture to side (not reaching inclined area), partially with orangish-brown pubescence toward its narrowest area; and orangish-brown pubescent macula from oblique black macula to epipleural margin. Surface also with small, sparse tufts of short, yellowish-white setae, especially along dorsal carina. Legs. Femora with conspicuous black pubescence interspersed with irregular, large areas with yellowish-white pubescence, except posterior half of club only yellowish-white pubescent. Tibiae with two yellowish-white pubescent rings, one on basal quarter, another from just before middle to posterior quarter, and two black pubescent rings, one between yellowish-white pubescent rings, another on posterior quarter; with sparse, decumbent, yellowish setae from posterior yellowish-white pubescent ring to apex. Metatarsomere I about as long as length of II–III together; tarsi with black pubescence.

Abdomen. Last tergite narrow, rounded at apex, partially not covered by elytra. Ventrites with scattered, whitish pubescence, slightly more abundant on sides of ventrites I-IV; apex of ventrite V emarginated, with long, erect, yellowish setae.

Dimensions (mm), female holotype /female paratypes. Total length, 10.00/9.65-10.00; prothoracic length, 1.90/1.70-1.75; anterior prothoracic width, 2.20/2.30-2.35; posterior prothoracic width, 2.15/2.40-2.45; maximum prothoracic width (between apex of lateral tubercles), 2.50/2.60-2.65; humeral width, 3.65/3.70-3.75; elytral length, 6.90/6.90-7.30.

Type material. Holotype female labeled. “ MEXICO: Oaxaca, San Miguel Chimalapa, San Antonio, El Gringo , 22-Julio-2017, 16.6786° N, - 94.2627° W, 1,600 m, luz aditivos metálicos, 11PM, bosque mesófilo de montaña, O. Pérez col.” Paratypes - HONDURAS, Cortés: Cusuco National Park (Cortecito) , 04.VII.2015, local collector ( MZSP, 1 female) ; 12.VII.2015, local collector ( RBINS, 1 female) .

Etymology. The specific epithet is derived from the Latin “album” (white), referring to the yellowish-white pubescence on body. The compound specific epithet is a noun in apposition.

Remarks. The general appearance of Pseudastylopsis albus sp. nov. resembles Leptostylus batesi Casey, 1913 . However, the body shape, and especially the prothoracic shape is that of Pseudastylopsis . Furthermore, the mesoventral process is wider than mesocoxal cavity in L. batesi , while it is distinctly narrower in P. albus .

In Pseudastylopsis , P. albus sp. nov. is somewhat similar to P. nelsoni nelsoni Linsley & Chemsak, 1995 , P. nelsoni australis Linsley & Chemsak, 1995 , and P. pini (Schaeffer, 1905) , but differs especially by the elytral pubescent pattern (see photographs on Bezark 2020 a, and Lingafelter et al. 2020).

Figures

FIGURE 2. A-D) Pseudastylopsis albus sp. nov. holotype female:A) Dorsal habitus; B) Ventral habitus; C) Lateral habitus; D) Head, frontal view.