Plagiosarus literatus Bates, 1885

Santos-Silva, Antonio, Botero, Juan Pablo & Wappes, James E., 2020, Neotropical Acanthoderini (Coleoptera, Cerambycidae, Lamiinae): Synonymies and new status in some genera, new species, transferences and new distributional records, Papéis Avulsos de Zoologia 60, pp. 1-40 : 31-33

Plagiosaurus Bates, 1880 Plagiosarus literatus Bates, 1885

( Figs. 136-141 )

Plagiosarus literatus Bates, 1885: 382 ; Aurivillius, 1923: 383 (cat.); Blackwelder, 1946: 610 (checklist); Gilmour, 1965: 611 (cat.); Chemsak et al., 1992: 132 (cat.); Monné, 1994: 51 (cat.); Monné & Giesbert, 1994: 237 (checklist); Monné, 2005: 198 (cat.); Hovore, 2006: 376 (distr.); Monné, 2019: 287 (cat.).

Description: Male ( Figs. 136-140 ): Integument mostly black; mouthparts dark reddish-brown except palpomeres black with yellow apex; posterior area of gulamentum dark reddish-brown; anteclypeus, labrum, most of tarsomeres V reddish-brown; basal half of antennomeres III-IV orangish-brown; basal third of antennomeres V-VIII reddish-brown;femora mostly brown with irregular reddish-brown areas; protibiae with four rings, from base to apex their color is: reddish-brown, dark-brown, reddish-brown, and then black; meso- and metatibiae darkbrown brown with three reddish-brown rings, one basally, one centrally (widest), another at apex (narrowest).

Head: Frons finely, sparsely punctate; with white, pale-yellow and yellowish-brown pubescence intermixed; with a few long, erect dark setae close to eyes. Vertex with punctures as on frons, nearly absent toward prothoracic margin; pubescence as on frons between antennal tubercles and upper eye lobes, forming semicircular yellowish-brown macula on each side of median groove close to prothorax. Area behind eyes finely punctate (punctures finer than on frons), denser close to eye, sparser toward prothorax; area behind upper eye lobes with yellowish-brown pubescence; area behind lower eye lobes with pale-yellow pubescence close to eye, with white setae interspersed, wide area close to prothorax glabrous. Genae 1.3 times longer than lower eye lobe; with dense pale-yellow pubescence close to eye, area close to frons glabrous, with sparse pale-yellow pubescence toward glabrous apex, with white setae interspersed.Postclypeus centrally and laterally glabrous,with bristly pale-yellow and yellowish-brown pubescence on remaining surface; with one long dark seta on each side of pubescent area. Posterior ⅘ of labrum coplanar with anteclypeus, inclined at anterior fifth; with pale-yellow pubescence on coplanar area not obscuring integument, inclined area nearly glabrous, distal margin with golden pubescent fringe; with long dark setae directed forward at interface of coplanar and inclined area. Gulamentum smooth, wide posterior area glabrous, depressed, with short yellowish-white setae not obscuring integument anteriorly. Distance between upper eye lobes 0.51 times length of scape; in frontal view, distance between low- er eye lobes 0.87 times length of scape. Antennae 1.55 times elytral length, reaching elytral apex at basal third of antennomere IX. Scape clavate,slightly sulcate dorsally at basal third; with dark reddish-brown and brown pubescence intermixed,central pubescent ring with dense, yellowish-brown on outer side, yellowish-white, sparse on remaining surface (sparser dorsally), and narrow pubescent area at apex. Basal ring of pedicel with pale-yellow pubescence, dark-brown pubescence on remaining surface. Antennomere III with yellowish-white pubescence from base to after middle, not obscuring integument, with black pubescence on remaining surface, forming dense tuft of long setae ventrally and on inferior surface of sides; with a few long, erect brownish setae ventrally on light area. Antennomeres IV-X with basal white pubescent ring, and black pubescence on remaining surface; antennomeres IX-XI with erect black setae on distal half of ventral surface. Antennal formula (ratio) based on length of antennomere III (only one female measured): scape = 0.62; pedicel = 0.24; IV = 0.54; V = 0.38; VI = 0.30; VII = 0.25;VIII = 0.22; IX = 0.21; X = 0.12; XI = 0.18.

Thorax: Lateral tubercles of prothorax large, conical, slightly inclined upward, with apex acute. Pronotum with large, elevated tubercle each side of central area, inclined sideways, with apex blunt; central area with elongate tubercle, from anterior margin to posterior sulcus, carina-shaped from anterior margin to near middle, gradually widened from this point to posterior sulcus; coarsely, sparsely punctate between tubercles, anteriorly and posteriorly; central area with yellowish-brown pubescence, except short yellowish-white pubescent band on central tubercle close to anterior margin,and another more irregular one close to posterior margin, six white pubescent irregular macula, one each side of anterior quarter, one each side of posterior third, and one each side of posteri- or quarter; remaining anterior surface of central tubercle glabrous, and posterior area with brown pubescence not obscuring integument; apex of lateral tubercles glabrous; with dark-brown pubescent band close to outer side of lateral tubercles, and remaining dorsal surface of lateral tubercles on prothorax with yellowish-brown,pale-yellow and white pubescence intermixed; with a few long, erect dark setae laterally in posterior area. Sides of prothorax coarsely,sparsely punctate; with yellowish-brown pubescence and white pubescence interspersed. Prosternum with moderately dense yellowish-brown pubescence laterally, gradually whiter, distinctly sparser centrally, anterior area glabrous. Prosternal process slightly wid- er than half width of procoxal cavity; with sparse white pubescence. Ventral surface of mesothorax with dense abundant yellowish-brown pubescence laterally, white, notably sparse on central area of mesoventrite, white and sparse on mesoventral process. Mesoventral process slightly wider than width of mesocoxal cavity; with small tubercle each side of anterior area. Ventral surface of metathorax with abundant yellowish-brown pubescence laterally, whiter, sparser centrally. Scutellum with yellowish-white pubescence centrally, dark brown laterally. Elytra: Humeri very slightly projected forward; centrobasal crest short, elevated, covered with small tubercles; with slightly distinct carina from apex of centrobasal crest to posterior quarter, and another between the first and the humeri; apex truncate, with outer angle triangularly projected; coarsely,sparsely punctate on basal quarter, gradually finer, sparser toward apex; with abundant yellowish-brown pubescence with irregular white maculae interspersed, and three black pubescent dorsal areas, one at anterior third, one about middle, another at posterior quarter; with white pubescent band along suture, with small black pubescent maculae interspersed; with long, erect, sparse dark setae on basal quarter, especially on centrobasal crest. Legs: Femora with abundant yellowish-brown and pale-yellow pubescence intermixed, not obscuring integument. Protibiae with pale-yellow pubescence on anterior ⅔ not obscuring integument, black on distal third; with sparse, long, erect black setae interspersed. Meso- and metatibiae with pale-yellow pubescence on light areas (partially white on distal light ring), dark brown on dark areas. Protarsomeres I-IV with black pubescence, white pubescence interspersed on sides of I; protarsomere V mostly with white pubescence. Meso- and metatarsomeres I and most of V with white pubescence; tarsomeres II and IV with black pubescence; tarsomeres III, partially with black pubescence and white pubescence interspersed.

Abdomen: Ventrites I-IV with abundant yellowish-brown pubescence laterally, gradually whiter, sparser centrally; ventrite V with sparse yellowish-brown pubescence, slightly whiter centrally; ventrite V with apex concave.

Dimensions (mm), male (1)/female (2): Total length, 8.90/9.70-12.10; prothoracic length, 1.70/1.75-2.10; ante-

rior prothoracic width, 2.10/2.30-2.80; posterior prothoracic width, 2.20/2.40-2.90; maximum prothoracic width, 2.85/3.25-3.80; humeral width, 3.40/3.70-4.50; elytral length, 5.65/6.40-7.70.

Material examined: MEXICO, Veracruz: Los Tuxtlas ( UNAM), 1 male, 05-06.V.1994, J.E. Wappes col. ( ACMT); 15 km W Sontecomapan , 2 females, 10-13.IV.1993, J.E. Wappes col. ( ACMT; MZSP).

Known geographical distribution ( Monné, 2019; Tavakilian & Chevillotte, 2019): Mexico (Veracruz), Guatemala.

Remarks: Plagiosarus literatus was originally described base on a single female from Guatemala with Monné & Giesbert (1994) subsequently listing the species from Mexico (Veracruz). Recently, the species has only been mentioned in catalogs and checklists and until now the male had never been described.

Figures

Figures 130-141.(130‑135) Aegomorphusrobustus sp.nov.(130) Dorsal habitus,holotype male.(131)Ventral habitus,holotypemale.(132) Lateralhabitus,holotype male.(133) Head,frontalview,holotypemale.(134)Lower eyelobe,holotypemale.(135) Dorsal habitus,paratypefemale.(136‑141)Plagiosarusliteratus.(136) Dorsal habitus,male.(137) Ventral habitus,male.(138) Lateral habitus,male.(139) Head,frontalview,male.(140) Lower eye lobe,male.(141)Dorsal habitus,female.