Quissunego confusus, Santos-Silva & Bezark, 2024

Santos-Silva, Antonio & Bezark, Larry G., 2024, New species, notes and record of New World Acanthocinini (Coleoptera: Cerambycidae, Lamiinae), Zootaxa 5551 (1), pp. 167-185 : 178-181

Quissunego confusus sp. nov.

( Figs 22–26 )

Description. Holotype male. Head capsule dark brown, except ventral surface dark reddish brown with irregular yellowish-brown areas interspersed; ventral mouthparts brown except palpomeres partially dark yellowish brown; anteclypeus and most of labrum light brown; antennae orangish brown, except dark brown apex of antennomeres III– XI, dark area wider on XI. Prothorax brown except orangish-brown central area of prosternum and entire prosternal process. Ventral surface of meso- and metathorax dark brown laterally, orangish brown centrally. Scutellum dark brown. Elytra brown, slightly lighter on humeri. Pro- and mesocoxae orangish brown; metacoxae brown; trochanters and femoral peduncles orangish brown; femoral clubs orangish brown, except outer surface of procoxa mostly dark brown; tibiae and tarsomeres orangish brown. Abdominal ventrites 1–2 brown laterally, yellowish brown centrally; ventrites 3–5 yellowish brown.

Head. Frons abundantly, finely punctate; with abundant dull light yellowish-brown pubescence partially obscuring integument, pubescence yellower posterocentrally, except glabrous median groove. Area between antennal tubercles with dense pale-yellow pubescence centrally, except glabrous median groove, and abundant yellowish-brown pubescence not obscuring integument laterally. Remaining surface of vertex with dense pale-yellow pubescence, except glabrous median groove and glabrous central triangular area between eyes. Area behind eyes with dense yellow pubescence, slightly lighter behind upper eye lobe, except glabrous area close to prothorax behind lower eye lobe. Genae 0.4 times length of lower eye lobe; with abundant yellowish-white pubescence not obscuring integument toward ventral surface and abundant pale-yellow pubescence not obscuring integument toward frons and clypeus, except glabrous apex; with a few long, erect dark-brown setae interspersed. Wide central area of postclypeus with abundant dull yellowish-brown pubescence not obscuring integument; with one long, erect dark-brown seta on each side. Labrum with dull yellowish-brown pubescence not obscuring integument posteriorly, glabrous anteriorly; with a few long, suberect dark-brown setae interspersed on pubescent area. Antennal tubercles with abundant pale-yellow pubescence not obscuring integument. Gulamentum smooth, glabrous, except sparse yellowish-white pubescence on intermaxillary process. Distance between upper eye lobes 0.23 times distance between outer margins of eyes; in frontal view, distance between lower eye lobes 0.49 times distance between outer margins of eyes. Antennae 2.7 times elytral length, reaching elytral apex at apical quarter of antennomere VI. Scape and pedicel with yellowish-white pubescence not obscuring integument. Antennomeres III–XI with yellowish-white pubescence not obscuring integument, except dark-brown pubescence not obscuring integument on dark integumental area; apex of IV–VIII with a few moderately long, erect setae dorsally and ventrally; V–XI with short, erect whitish setae interspersed throughout, gradually more abundant toward XI. Antennal formula based on length of antennomere III: scape = 0.97; pedicel = 0.12; IV = 1.00; V = 0.91; VI = 0.82; VII = 0.73; VIII = 0.72; IX = 0.67; X = 0.62; XI = 0.59.

Thorax. Pronotum with one wide, slightly oblique band with sparse brown pubescence on each side of middle, from anterior margin to posterior third; central region with longitudinal pale yellow pubescent band from anterior to posterior margin, distinctly widened centrally, pubescence yellowish brown close to anterior margin, pale yellow on remaining anterior third, light yellowish brown toward middle, pale yellow between middle and posterior third, and white on posterior third, except glabrous central area from just before middle to posterior quarter; sides of anterior half with large, somewhat L-shaped yellowish-brown pubescent macula, irregular yellowish-brown pubescent macula near apex of L-shaped macula, and abundant pale-yellow pubescence partially obscuring integument on remaining surface, except glabrous anterior sulcus; sides of posterior half with yellowish pubescence not obscuring integument, close to central band, whitish pubescence not obscuring integument close to lateral tubercles of prothorax, and moderately dense, irregular white pubescent macula between middle and posterior quarter; with a few long, erect dark-brown setae on sides of posterior third. Sides of prothorax with abundant yellowish pubescence not obscuring integument, except glabrous anterior sulcus. Prosternum with moderately abundant yellowish-white pubescence not obscuring integument, pubescence slightly sparser centrally, except glabrous anterior sulcus. Prosternal process with sparse yellowish-white pubescence; narrowest area 0.08 times procoxal width. Sides of ventral surface of meso- and metathorax with abundant dull yellowish-brown pubescence not obscuring integument on mesothorax, partially obscuring integument on metathorax; central region of mesothorax almost glabrous; central region of metathorax with sparse yellowish-white pubescence. Scutellum with sparse yellowish-brown pubescence, slightly more abundant apically. Elytra. Abundantly, coarsely punctate on anterior half, punctures gradually finer and sparser toward apex on posterior half; anterior fifth with moderately sparse brown pubescence, and irregular white, yellowish-white and pale-yellow pubescent areas interspersed, except humerus and area between it and epipleural margin with moderately abundant yellowish-white pubescence not obscuring integument; dorsal region between anterior fifth and about middle with large, irregular white pubescent macula with brown pubescent areas interspersed, except sides with sparse brownish pubescence and areas with abundant yellowish and yellowish-white pubescence; posterior third with irregular, both areas with dense white pubescence and areas with sparse brownish pubescence, white pubescence partially fused to anterior white pubescent macula close to suture; dorsal area between middle and posterior third with large, transverse, almost zig-zag area with sparse brownish pubescence not reaching suture; area between epipleural margin and dorsal region, from anterior fifth to posterior third, with moderately sparse brownish pubescence except center of this area with abundant yellower pubescence not obscuring integument. Legs. Femora with abundant whitish pubescence not obscuring integument, pubescence slightly yellower on some areas depending on light intensity. Protibiae with abundant whitish pubescence not obscuring integument, except ventral surface with dense, bristly dark yellowish-brown pubescence; with short, thick blackish setae on apical third, especially on outer surface, forming sparse fringe on outer apex. Meso- and metatibiae with abundant yellowish-white pubescence partially obscuring integument, pubescence sparser more yellowish brown on entire apical third of mesotibiae and ventral surface of metatibiae; with short, thick, erect blackish setae interspersed throughout, denser on dorsal sulcus of mesotibiae. Dorsal surface of tarsi with abundant whitish pubescence not obscuring integument.

Abdomen. Ventrites with moderately abundant yellowish-white pubescence not obscuring integument, pubescence distinctly sparser on central region of ventrites 4–5; apical region of ventrite 5 with sparse, short blackish setae; apical margin of ventrite 5 distinctly concave. Apex of last tergite slightly concave.

Female. Unknown.

Variation. Prothorax, ventral surface of meso- and metathorax, elytra, and coxae entirely dark brown; femoral peduncles mostly brownish; abdominal ventrites brown.

Dimensions (mm) (Holotype male/ paratypes males). Total length, 6.80/6.25–6.75; prothoracic length, 1.25/1.20–1.30; anterior prothoracic width, 1.35/1.30–1.40; posterior prothoracic width, 1.55/1.50–1.65; maximum prothoracic width, 2.10/1.95–2.20; humeral width, 2.50/2.35–2.55; elytral length, 4.40/4.40–4.65.

Type material. Holotype male from BOLIVIA, Santa Cruz: Potrerillo del Guendá, 17°40’15”W 63°27’26”W, Snake Farm , 400 m, Reserva Natural , 24–30.X.2012, Betella, Bonasso & Romero leg. ( FSCA) . Paratypes – BOLIVIA, Santa Cruz: same data as holotype, 1 male ( MZSP) ; 4 km SSE Buena Vista, Hotel Flora & Fauna , 17°20’S 63°39’W, 300–400 m, 1 male, 23.XI.2013, Skillman & Wappes leg. ( MNKM) .

Note: The holotype was not collected by James E. Wappes and collaborators. Therefore, not following the agreement established with the MNKM, dated on March 1, 2011.

Etymology. In keeping with the inquisitive nature of the generic name, the specific name confusus (Latin, meaning “confused”) is allusive to the question of existence.

Remark. Females are probably very similar to males, but with slender femoral clubs.

Figures

FIGURES 22–26. Quissunego confusus sp. nov., holotype male: 22) Dorsal habitus; 23) Ventral habitus; 24) Lateral habitus; 25) Head, frontal view; 26) Prosternal and mesoventral processes.