Aegomorphus robustus, Santos-Silva & Botero & Wappes, 2020

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 : 30-31

Aegomorphus robustus sp. nov. ( Figs. 130-135 )

Description: Male ( Figs. 130-134 ): Integument mostly black; mouthparts dark reddish-brown, except palpomeres black with apex yellowish; anteclypeus semitranslucent; apex of labrum light reddish-brown.

Head: Frons coarsely, sparsely punctate; with orangish-brown pubescence, partially obscuring integument (worn away in the holotype and many of the paratypes), with white pubescence interspersed and a few long, erect brown setae close to eyes. Area between antennal tubercles coarsely, sparsely punctate; with orange-brown pubescence partially obscuring integument, with yellowish-white pubescence interspersed, central area with yellowish-white pubescence. Area between upper eye lobes with orange pubescence (much of it missing in the holotype), with white pubescence interspersed. Central area of vertex close to prothorax with a large semielliptical area with short brown pubescence on each side of median groove (lost in the holotype), and orangish-brown pubescence along median groove. Area behind upper eye lobes with orange-white pubescence, with distinct yellowish-white pubescence close to ver- tex and dense, narrow yellowish-white pubescent band close to eye, widened toward inferior side, remaining surface glabrous. Genae almost 1.5 times length of low- er eye lobe; with yellowish-white pubescence close to eye toward posterior area, with orangish-brown pubescence and white pubescence interspersed toward anterior area, glabrous apex. Postclypeus coarsely, sparsely punctate on wide central area, smooth laterally; with bristly orangish-brown pubescence on wide central area (nearly glabrous centrally), glabrous laterally; with long, sparse, erect dark setae on wide central area. Posterior ¾ of labrum coplanar with anteclypeus, inclined at anterior quarter; yellowish-white pubescent, with long, erect dark setae interspersed on coplanar area, anterior margin with fringe of nearly golden pubescence. Gulamentum with transverse, slightly distinct striae on wide posterior area, depressed on narrow anterior area; wide posterior area glabrous, with yellowish-white pubescence on depressed area. Distance between upper eye lobes 0.56 times length of scape; in frontal view, distance between lower eye lobes 0.95 times length of scape. Antennae 1.35 times elytral length, reaching elytral apex at middle of antennomere XI. Scape clavate, slightly sulcate in basal third dorsally; with yellowish-white pubescence (partially lost in the holotype), with orangish-brown pubescence interspersed dorsally. Pedicel with basal and distal pubescent rings, distally distinctly narrower, pubescence mostly pale-yellow dorsally, whiter ventrally. Antennomere III with pale-yellow pubescence on basal quarter of dorsal surface, pubescence whiter on basal half of ventral surface; remaining surface with brown pubescence, with a few white setae interspersed; with a few short, erect dark setae ventrally; remaining antennomeres pale-yellow pubescent on basal half, brown on distal surface; with a few short, erect dark setae on ventral surface of antennomeres IV-X (sparser toward X). Antennal formula (ratio) based on length of antennomere III (only one male measured): scape = 0.77; pedicel = 0.20; IV = 0.72; V = 0.52; VI = 0.44; VII = 0.38; VIII = 0.33; IX = 0.29; X = 0.24; XI = 0.25.

Thorax: Lateral tubercle of prothorax large, conical, slightly inclined upward, with apex blunt. Pronotum with large, elevated tubercle on each side, gradually more elevated anteriorly, becoming nearly conical with apex rounded; with carina-shaped central tubercle, from anterior margin to posterior sulcus, widened posteriorly; coarsely, sparsely punctate around tubercles and anteriorly and posteriorly; with orangish-brown and yellowish-white pubescence intermixed centrally, top of tubercles glabrous, and orangish-brown pubescence with yellowish-white pubescence interspersed (yellowish-white pubescence denser on sides of posterior area and sides of anterior area of lateral tubercles); with a few long, erect dark setae laterally on posterior area. Sides of prothorax coarsely punctate; with yellowish-white pubescence; with orangish-brown pubescence interspersed on area close to pronotum. Ventral surface of thorax with pale-yellow pubescence in some areas partially obscuring integument, distinctly sparser on cen- tral area of mesoventrite. Prosternal process 0.7 times as wide as procoxal cavity; lateral margins slightly sinuous. Mesoventral process about as wide as mesocoxal cavity; longitudinally tumid centrally (more elevated toward anterior area), without tubercle on sides of anterior area. Scutellum with orangish-brown pubescence laterally (partially lost in the holotype), yellowish-white centrally. Elytra: Humeri slightly projected forward; with slightly elevated centrobasal crest between humeri and scutellum, covered with small tubercles, and distinct carina from apex of centrobasal crest to near apex;with another carina between humeri and the former carina; both carina fused distally; with small, sparse tubercles on basal quarter; coarsely, sparsely punctate; apex truncate, concave centrally; with yellowish-white and orangish-brown pubescence irregularly mixed, except: white V-shaped band centrally on anterior third (encompassing both elytra); irregular area with brown pubescence between centrobasal crests (pubescence lost in the holotype and most paratypes); oblique brown pubescent band on sides of anterior third dorsally; oblique, large, irregular brown pubescent band dorsally after middle; oblique, moderately large, irregular brown pubescent band dorsally near apex; with pubescent band along suture, from V-shaped pubescent band to apex, with round- ed brown pubescent spots interspersed. Legs: Femora with pale-yellow pubescence on some areas partially obscuring integument, forming two dense, longitudinal bands ventrally on base of profemora. Tibiae with three pale-yellow pubescent rings, one basally, one centrally, another at apex; remaining surface with brownish pubescence not obscuring integument. Sides of dorsal surface of protarsomere I and tarsomere V with pale-yellow pubescence; remaining surface of protarsomere I and protarsomeres II-IV with dark pubescence. Meso- and metatarsi with pale-yellow pubescence dorsally.

Abdomen: Ventrites with dense pale-yellow pubescence laterally, sparser centrally, except glabrous, subround- ed macula on each side, near apex in I-IV, near base in V; apex of ventrite V moderately wide, truncate, centrally emarginate.

Female ( Fig. 135 ): Differs from male by the shorter antennae (1.2 times elytral length, reaching about distal ninth of elytra), and apex of ventrite V narrower.

Variation: Area between upper eye lobes coarsely, sparsely punctate; pubescence on dorsal surface of scape mostly orangish-brown; elytral apex not centrally concave, with outer angle slightly, triangularly projected.

Dimensions(mm), holotype /paratypemales/ paratype females: Total length, 17.80/14.95-18.75/16.75-20.20; prothoracic length, 3.30/2.80-3.40/2.95-3.20; anterior prothoracic width, 4.60/3.80-4.75/4.25-5.00; posteri- or prothoracic width, 4.70/3.95-4.80/4.40-5.10; maximum prothoracic width, 6.10/5.30-6.30/5.70-6.25; humeral width, 7.25/6.20-7.50/7.05-8.05; elytral length, 12.70/10.30-12.95/12.10-14.05.

Type material: Holotype male from BOLIVIA, Santa Cruz: Andrés Ibáñes ( Jardin Botanico ), 02-03.XII.2010, J.L. Castro R. Flores col. ( FSCA), formerly ACMT). Paratypes – BOLIVIA, Santa Cruz: same data as holotype, 2 male, 2 females ( MNKM; 1male, 1female, ACMT) ; 4males, 2females, same data as holotype except, 26.27. XI.2010, J.L. Castro M. Perez col. ( MNKM ; 1 male, ACMT ; 1 male, 1 female, MZSP) ; 20 km N Camiri (Road to Eyti ; 1250 m; 6-8 km E Hwy 9; 19°52′S, 63°29′W), 1 female, 05-10.XII.2012, Wappes, Bonaso & Skillman col. ( ACMT) ; (6-8 km E Hwy 9; 1250 m; 19°52′S, 63°29′W), 1 female, 26.XI.2013, Wappes & Skillman col. ( ACMT) ; 4 km N Bermejo (Refugio los Volcanes ; 1045-1350 m; 18°06′S, 63°36′W), 1 male, 17-24.X.2014, Wappes & Morris col. ( ACMT) .

Remarks: Aegomorphus robustus sp. nov. differs from other species of the genus with a similar appearance (e.g., A.circumflexus ) by the mesoventral process distinctly longitudinally tumid centrally, and by lacking anterolateral tubercles (similar species have the mesoventral process flattened or somewhat depressed centrally, and with distinct anterolateral tubercles).

Etymology: This species name “robustus” simply references its robust appearance.

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.