Pseudosparna dimistrisi, Nearns & Swift & Santos-Silva, 2023

Nearns, Eugenio H., Swift, Ian P. & Santos-Silva, Antonio, 2023, Three new species of longhorned beetles (Coleoptera: Cerambycidae) with notes on additional taxa, Zootaxa 5228 (2), pp. 137-156 : 140-143

Pseudosparna dimistrisi sp. nov.

Figures 8–13 , 16–20

Description. Holotype male ( Figs. 8–13 ). Integument mostly dark brown; anterior margin of postclypeus reddish brown; anteclypeus mostly orangish brown; labrum yellow; apex of palpomeres reddish brown, except yellowish apex of maxillary palpomere IV and labial palpomere III; scape, pedicel, and antennomere III black; antennomeres IV and VI dark reddish brown on anterior 2/3, blackish on posterior third; antennomere V dark reddish brown except dark brown apex; antennomeres VII–VIII dark reddish brown on basal third, blackish on posterior 2/3; antennomeres IX–XI dark brown. Pronotum with wide, longitudinal orangish-brown band on each side. Prosternum and mesoventrite with reddish brown macula on center of posterior region. Elytra with orangish-brown band on center of dorsal eighth. Pro- and mesofemora yellowish brown basally; metafemora dark reddish brown basally; metatarsomeres mostly dark reddish brown with blackish apex. Ventrite 1 dark reddish brown centrally; ventrite 2 reddish brown about basal half; ventrite 3 reddish brown on sides of basal third; ventrite 4 reddish brown on sides of basal quarter; ventrite 5 with slightly distinct, transverse dark reddish brown band centrally; apex of ventrites 1–4 reddish brown.

Head. Frons minutely, densely punctate; with straw-colored pubescence not obscuring integument. Vertex and area behind upper eye lobes finely, densely punctate, except smooth area close to prothorax; central area between antennal tubercles and upper eye lobes with dense yellow pubescence, except glabrous longitudinal groove between antennal tubercles; remaining punctate area of vertex and superior region behind upper eye lobes with dense dark brown pubescence; remaining punctate area behind upper eye lobes with dense yellow pubescence; smooth area glabrous. Area behind lower eye lobes minutely, densely punctate, except smooth area close to prothorax; punctate region with straw-colored pubescence not obscuring integument close to upper eye lobes, more conspicuous and yellowish toward ventral surface; with a few long, erect black setae close to eye; smooth area glabrous. Genae with sculpturing and pubescence as on frons, except smooth and glabrous apex. Antennal tubercles elevated, minutely, densely punctate, with dark brown pubescence partially obscuring integument. Wide central area of postclypeus with straw-colored pubescence not obscuring integument, and one long, erect black seta on each side; sides of postclypeus glabrous. Labrum with transverse row of long, erect black setae centrally; anterior margin with short fringe of yellow setae. Distance between upper eye lobes 0.30 times distance between outer margins of eyes; in frontal view, distance between lower eye lobes 0.58 times distance between outer margins of eyes. Antennae 2.3 times elytral length, reaching elytral apex at posterior third of antennomere VI. Scape with abundant blackish pubescence partially obscuring integument, and long, erect, abundant black setae ventrally, except on basal quarter. Pedicel and antennomere III with abundant dark brown pubescence and a few short, decumbent yellowish setae interspersed; ventral surface with long, erect, sparse black setae. Antennomeres IV–XI with abundant yellowish-white pubescence not obscuring integument; antennomeres IV–VI with a few long, erect black setae ventrally; antennomeres III–IX with a few short, erect black setae dorsally. Antennal formula based on length of antennomere III: scape = 1.45; pedicel = 0.09; IV = 0.93; V = 0.79; VI = 0.75; VII = 0.70; VIII = 0.70; IX = 0.70; X = 0.64; XI = 0.64.

Thorax. Prothorax wider than long; sides divergent from anterolateral angles to lateral tubercles, convergent from this point to posterolateral angles; lateral tubercles located near posterior sixth, with acute apex directed backward; with narrow constriction close to anterior margin. Pronotum minutely punctate, except coarser punctures on posterior fifth; orangish-brown bands with dense yellow pubescence (more golden depending on light intensity), and remaining surface with dense brown pubescence. Sides of prothorax abundantly finely punctate; with abundant brown pubescence partially obscuring integument close to pronotum, gradually straw-colored toward prosternum, except glabrous narrow area between transverse anterior sulcus and anterior margin. Prosternum with abundant straw-colored pubescence not obscuring integument, except glabrous narrow area between transverse anterior sulcus and anterior margin. Prosternal process laminiform centrally. Ventral surface of meso- and metathorax with abundant straw-colored pubescence not obscuring integument. Mesoventral process ( Fig. 12 ) gradually narrowed toward subacute apex. Scutellum with brownish pubescence not obscuring integument. Elytra. Coarsely, abundantly punctate on anterior half, punctures coarse laterally on anterior fifth, and gradually sparser toward apex; apex spiniform at outer angle, sinuously slightly oblique toward rounded sutural angle; with dense brownish pubescence partially obscuring integument, except longitudinal yellow pubescence band on center of dorsal surface, from base to posterior quarter, gradually narrow and pale yellow toward its apex, narrow yellowish-white pubescent sutural band; with long, erect, sparse black setae throughout. Legs. With abundant straw-colored pubescence not obscuring integument, appearing to be darker due to the integument color on middle and hind legs; protibiae with short, erect, sparse white setae interspersed; mesotibiae with short, erect black setae from basal quarter ventrally and from middle dorsally, distinctly denser about posterior third; metatibiae with short, erect, sparse black setae from basal quarter ventrally and from base dorsally, distinctly denser on posterior third. Metatarsomere I slightly longer than twice length of II–III together.

Abdomen. Ventrites with abundant grayish-white pubescence not obscuring integument, more yellowish-white on center of ventrites 1 and 2; apex of ventrite 5 strongly concave, making outer angles spiniform.

Female ( Figs. 16–20 ). The most conspicuous chromatic differences are: frons and genae orangish brown; antennomeres IV–VI orangish brown, except dark brown apex; antennomere VII dark reddish brown, except dark brown apex; remaining antennomeres dark brown, more blackish on scape; central area of mesoventrite and basal area of mesoventral process yellow; elytra mostly light orangish brown, with dense yellow pubescence, except dark brown band with slightly sparer dark brown pubescence on anterior 2/3 close to suture. Antennae slightly shorter, 2.2 times elytral length, reaching elytral apex at base of antennomere VII.

Dimensions (mm) (holotype / paratype). Total length, 9.10/7.05; prothoracic length, 1.30/0.95; anterior prothoracic width, 1.10/0.90; posterior prothoracic width, 1.30/1.05; maximum prothoracic width, 1.65/1.30; humeral width, 1.90/1.40; elytral length, 6.90/5.05.

Type material. Holotype male from PANAMA, Chiriquí: 3 km N Boquete , 1600 m, 9.VIII.1995, F. Oedegaard leg ( MZSP) . Allotype female from PANAMA, Chiriquí: Las Lagunas For. Res., 8.7751ºN 82.6512ºW, 4.V.2019, E.G. Riley leg. ( DHCO) .

Etymology. We are pleased to name this species for Dimitris Hall (Easy Greek YouTube channel and podcast, Athens, Greece), for his friendship, generosity, and commitment to bringing people together through language. The epithet is a noun in the genitive case.

Remarks. Pseudosparna dimistrisi sp. nov. is similar to P. antonkozlovi Santos-Silva & Nascimento, 2019 (see photographs on Bezark 2022), but differs as follows: yellow pubescent bands on sides of the pronotum wider, almost covering the entire lateral area, and reaching anterior margin; elytral apex narrow and obliquely sinuous; mesoventral process with apex subacute ( Fig. 12 ); metatibiae not distinctly widened toward apex ( Fig. 13 ). In P. antonkozlovi , the yellow pubescent bands on sides of the pronotum is narrow, not reaching lateral and anterior margins, elytral apex wider, oblique, but not sinuous, mesoventral process in males with apex not subacute ( Fig. 14 ), and metatibiae distinctly widened toward apex in male ( Fig. 15 ). Pseudosparna dimistrisi is also similar to P. luteolineata Mermudes & Monné, 2009 (see photographs on Bezark 2022), but differs by the antennomere IV not contrasting in color with antennomere V (strongly contrasting in P. luteolineata ), and elytral apex wider (narrower in P. luteolineata ). The chromatic difference between the holotype and the paratypes suggests that the color of the species may have several intermediate colors.

Figures

FIGURES 8–15. Pseudosparna spp. 8–13) Pseudosparna dimitrisi sp. nov., holotype male: 8) Dorsal habitus; 9) Ventral habitus; 10) Lateral habitus; 11) Head, frontal view; 12) Mesoventral process; 13) Metatibia. 14–15) Pseudosparna antonkozlovi Santos-Silva & Nascimento, 2019, holotype male: 14) Mesoventral process; 15) Metatibia.

FIGURES 16–20. Pseudosparna dimitrisi sp. nov., allotype female: 16) Dorsal habitus; 17) Ventral habitus; 18) Lateral habitus; 19) Head, frontal view; 20) Prosternal and mesoventral processes.