Parabaryssinus katerinae Vlasak and Santos-Silva, 2023

Vlasak, Josef & Santos-Silva, Antonio, 2023, Description of three new Acanthocinini (Coleoptera: Cerambycidae: Lamiinae) species from Ecuador, Insecta Mundi 2023 (998), pp. 1-13 : 6-9

Parabaryssinus katerinae Vlasak and Santos-Silva , new species

( Fig. 11–17 )

Description. Holotype male ( Fig. 11–15 ). Integument mostly black; antennomeres III–VI orange basally; femoral peduncles orange; central area of protibiae orange dorsally and laterally; meso- and metatibiae with wide orange ring before middle.

Head. Frons abundantly, finely punctate; with dense white pubescence on wide triangular area close to clypeus, dense, somewhat yellowish-white pubescence on wide triangular area close to vertex, both pubescent triangular areas not entirely obscuring median groove, and dense grayish-white pubescence on remaining surface; with a few long, erect dark-brown setae near eyes. Vertex with dense pubescence, white with slight yellowish tint between antennal tubercles and upper eye lobes, more grayish white close to prothorax, except glabrous median groove, which does not surpass eyes; with a few long, erect dark-brown setae close to eyes. Area behind upper eye lobes with dense fringe of whitish pubescence close to eye and dense, slightly grayish-white pubescence on remaining surface; with a few long, erect dark-brown setae close to eye. Area behind lower eye lobes with abundant grayish-white pubescence not obscuring integument, and long, erect dark-brown setae interspersed superiorly close to eye. Genae with abundant, both white and grayish-white pubescence not obscuring integument, pubescence sparser close to clypeus, except glabrous apex; with a few long, erect dark-brown setae interspersed. Antennal tubercles with dense pubescence, mostly grayish white frontally and somewhat yellowish white on remaining surface. Postclypeus with somewhat abundant, bristly white pubescence centrally, mostly absent laterally, and long yellowish setae directed forward close to anteclypeus; with one long, erect dark-brown seta on each side near frons. Gulamentum smooth, glabrous, except anterocentral region abundantly, finely punctate with somewhat abundant grayish-white pubescence. Distance between upper eye lobes 0.38 times distance between outer margins of eyes; in frontal view, distance between lower eye lobes 0.65 times distance between outer margins of eyes. Antennae 2.2 times elytral length, reaching elytral apex at apical quarter of antennomere VI. Scape sinuous, pedunculate-clavate; with dense blackish pubescence on dorsal and lateral surface of basal third and entire apical third, except sparse grayish-white pubescence on inner apex of apical third, abundant, whitish pubescence dorsally and laterally on central third, pubescence partially yellowish-white laterally, abundant grayish-white pubescence on basal half of ventral surface, and abundant, mostly dark-brown pubescence not obscuring integument on apical half; with a few long, erect dark-brown setae on posterior 2/3 of ventral surface. Pedicel with abundant blackish pubescence partially obscuring integument, except somewhat sparse whitish pubescence on base of inner surface; with one long, erect dark-brown seta ventrally. Antennomeres III– XI with dense white pubescence basally, white pubescence sparser ventrally on V–VII, dense blackish pubescence on remaining surface, sparse, short yellowish-white setae interspersed, short, decumbent, sparse whitish setae interspersed on blackish pubescence of distal antennomeres, and short white setae on apex of XI; antennomeres III–IV with long, erect dark-brown setae ventrally, more abundant on III; antennomeres V–X with somewhat long dark-brown setae on apex of ventral surface. Antennal formula based on length of antennomere III: scape = 1.00; pedicel = 0.14; IV = 0.81; V = 0.70; VI = 0.63; VII = 0.59; VIII = 0.58; IX = 0.58; X = 0.56; XI = 0.46.

Thorax. Prothorax wider than long; sides with large, conical tubercle centrally, with apex slightly directed upward; anterior constriction well marked. Pronotum without tubercles, with slightly distinct gibbosity on each side of anterior third; abundantly, coarsely punctate; with wide, longitudinal black pubescent band centrally, from anterior to posterior margin, parallel-sided on anterior sixth, then abruptly rounded, widened and concave toward posterior margin; sides with dense yellowish-white pubescence, except black pubescence close to sides of prothorax, yellowish-white pubescence not obscuring part of punctures; with a few long, erect dark-brown setae interspersed on posterior half of yellowish-white pubescence. Sides of prothorax with dense black pubescence. Prosternum with abundant white pubescence not obscuring integument, denser laterally, except glabrous anterior sulcus; anterior margin with dense fringe of short yellowish-white setae. Prosternal process with abundant white pubescence not obscuring integument, except glabrous lateral margins; distinctly narrowed centrally, with narrowest area 0.12 times procoxal width. Ventral surface of meso- and metathorax with abundant white pubescence not obscuring integument, denser laterally, except glabrous anterocentral region of mesoventrite, posterocentral region of metaventrite, and slightly sparser pubescence on mesepimeron. Scutellum with dense, subtriangular yellowish pubescent macula on anterocentral 2/3, and blackish pubescence not obscuring integument on remaining surface. Elytra. Sides gradually narrowed toward apex; apex distinctly oblique, concave centrally, with outer angle triangularly projected and sutural angle with short, rounded projection; somewhat abundantly, coarsely punctate, pubescence obscuring most punctures. Humeral carina somewhat well marked from base to posterior quarter; dorsal surface with two longitudinal carinae, one starting near humerus and ending about posterior quarter, another starting about centrally on posterior half and ending about posterior quarter. Centrobasal crest well marked, with long, erect black setae ( Fig. 15 ). Dorsal surface with wide, oblique, dense yellowish-white macula on sides of anterior sixth, not reaching humerus, pubescence yellower basally; with dense, small yellowish-white pubescent macula basally between scutellum and lateral yellowish-white macula; with large, wide, distinctly sinuous white pubescent band from anterior sixth to apex, projected toward sides, almost reaching epipleural margin near posterior quarter, reaching suture on posterior third. Epipleural margin with dashed white pubescent bands on anterior 3/4; remaining elytral surface with abundant blackish pubescence partially obscuring integument. With somewhat sparse, long, erect blackish setae throughout. Legs. Femora pedunculate-clavate; with dense white pubescence on peduncle; profemoral club with dense yellowish pubescence dorsally, yellow pubescence reaching superior area of sides basally, and entire apex, and remaining surface with abundant grayish-white pubescence not obscuring integument (appearing darker depending on light source); meso- and metafemoral club with dorsal pubescence as on profemora, except base with abundant dark-brown pubescence and yellowish pubescence partially absent on basal region of posterior third, and remaining surface mostly with somewhat abundant grayish-white pubescence not obscuring integument. Tibiae with abundant white pubescence on light central region and abundant blackish pubescence on remaining surface; with a few long, erect blackish setae on posterior 2/3 of protibiae and posterior half of meso- and metatibiae; with sparse, short, erect yellowish setae interspersed on basal third; dorsal surface of posterior half of mesotibiae with abundant, short, erect, thick black setae; ventral surface of posterior half of meso- and metatibiae with short, bristly black setae, denser on mesotibiae. Dorsal surface of tarsomeres with dense black pubescence, except whitish pubescence about basal half of meso- and metatarsomere I; metatarsomere I 1.75 times as long as II–III together.

Abdomen. Ventrites with abundant white pubescence not obscuring integument, pubescence denser laterally on ventrites 1–2, absent on apex of 1–4, glabrous area wider on ventrite 4, pubescence appearing to be more grayish white on some areas due to the integument color; with a few long, erect black setae on ventrites 2–4, more abundant on ventrite 5. Apex of ventrite 5 concave, with long spine on each side.

Variation ( Fig. 16–17 ). The small yellowish-white pubescent macula on elytral base between scutellum and lateral yellowish-white macula absent. The large, sinuous white pubescent band of elytra wider, interrupted in apical sixth. A row of small black maculae along suture on apical third of elytra.

Dimensions (mm) (Holotype male/ paratypes male). Total length, 8.00/7.80–8.25; prothoracic length, 1.35/1.40– 1.45; anterior prothoracic width, 1.40/1.45–1.50; posterior prothoracic width, 1.60/1.65–1.75; maximum prothoracic width, 1.90/2.00–2.10; humeral width, 2.60/2.75–2.80; elytral length, 5.90/5.80–5.95.

Type material. Holotype male from ECUADOR, Napo: Papallacta , 3400 m, 20.XI.2022, K. Vlasakova leg. ( MZSP) . Paratypes – 2 males ( JVCO), same label as holotype.

Etymology. We are pleased to name this species after the first author’s wife Katerina Vlasakova who collected the type series.

Remarks. Parabaryssinus katerinae new species differs from P. lineaticollis (Gounelle, 1910) (see photographs on Bezark 2023 and Nascimento and McClarin 2018) as follows: integument mostly black; general pubescence mostly black, white, and yellowish white; scape distinctly narrower on basal half and pedunculate-clavate; lower eye lobes about as long as gena; and the pronotal and elytral pubescent pattern is formed by black and yellowish-white pubescence. In P. lineaticollis , the integument is mostly brown and dark brown, general pubescence is mostly golden and/or yellowish, scape is wider on basal half and is not pedunculate-clavate, lower eye lobes shorter than gena, and the pronotal and elytra pubescent pattern is more complex, especially on the elytra, and is mostly formed by golden and yellowish pubescence.

Paracleodoxus Monné and Monné, 2010

Figures

Figures 11–17. Parabaryssinus katerinae sp. nov. 11–15) Holotype male. 11) Dorsal habitus. 12) Ventral habitus. 13) Lateral habitus. 14) Head, frontal view. 15) Centrobasal crest of the elytra. 16–17) Paratypes male, dorsal habitus. 16) Specimen 1. 17) Specimen 2.