Hyperplatys striatus Vlasak and Santos-Silva, 2024

Santos-Silva, Josef Vlasak Antonio, 2024, Enriching the knowledge of the biodiversity of the South American fauna: descriptions of new species of Cerambycinae and Lamiinae (Coleoptera: Cerambycidae), Insecta Mundi 2024 (93), pp. 1-25 : 5-9

Hyperplatys striatus Vlasak and Santos-Silva , new species

( Fig. 7–11 )

Description. Holotype male ( Fig. 7–10 ). Head capsule dark brown; mouthparts mostly reddish brown ventrally, except palpomeres dark brown with apex of maxillary palpomeres I–III and labial palpomeres I–II whitish and apex of maxillary palpomere IV and labial palpomere III yellowish brown; postclypeus dark brown; anteclypeus both brown and orangish brown; labrum brown close to anteclypeus, yellowish brown on remaining surface; scape and pedicel brown; antennomere III dark orangish brown except dark-brown apex; antennomeres IV–XI orangish with dark-brown apex. Pronotum dark brown except one L-shaped blackish macula on each side of middle, from anterior to posterior margin, their inner margins divergent from anterior to posterior margin. Sides of prothorax brown. Ventral surface of prothorax dark reddish brown. Ventral surface of meso- and metathorax dark reddish brown with some areas darker brown. Scutellum dark reddish-brown. Anterior 4/5 of elytra mostly brown laterally, with abundant, irregular blackish maculae, one large, almost fishhook-shaped macula dorsally from about middle to apical quarter; remaining surface of anterior 4/5 reddish brown with blackish spots on basal fifth; apical fifth brownish with dark-brown maculae laterally. Femoral peduncles mostly orangish brown; femoral clubs reddish brown except sides and ventral surface partially dark brown. Protibiae brown on basal quarter, dark brown on apical third, reddish brown on remaining surface; meso- and metatibiae reddish brown on basal quarter, blackish on apical third, orangish on remaining surface. Protarsomere I yellowish brown on basal 2/3, dark brown on apical third; meso- and metatarsomere I orangish with dark-brown apex; tarsomeres II–IV dark brown; tarsomeres V dark reddish brown on basal half, dark brown on apical half; tarsal claws orangish brown. Abdominal ventrites dark brown laterally; apex of ventrites 1–4 orangish; remaining surface of ventrites 1–2 reddish brown, darker on ventrite 2; remaining surface of ventrites 3–5 orangish.

Head. Frons densely, minutely rugose-punctate close to clypeus, punctures more distinct toward antennal tubercles; with somewhat dense pale-yellow pubescence close to eyes, moderately sparse, both brownish and yellowish-white pubescence centrally close to clypeus, and abundant pubescence partially obscuring integument on remaining surface, abundant pubescence mostly dull yellowish brown centrally with decumbent yellowish-white setae interspersed, yellowish close to clypeus, and mostly brownish on remaining surface, except dark-brown pubescent macula laterally near eyes and glabrous median groove; with one long, erect dark-brown seta close to eyes. Area between antennal tubercles with abundant yellowish-brown pubescence not obscuring integument, except glabrous median groove, and abundant dark-brown pubescence not obscuring integument laterally. Remaining surface of vertex with dense yellowish-brown pubescence close to eyes and abundant dark-brown pubescence centrally, except glabrous triangular area between anterior region of eyes. Area behind upper eye lobes with dense yellowish-brown pubescence. Area behind lower eye lobes with abundant yellowish-brown pubescence partially obscuring integument close to eye, pubescence more yellowish white inferiorly, glabrous close to prothorax. Genae with abundant yellowish-white pubescence not obscuring integument toward ventral surface, dense yellowish-brown pubescence close to eye frontally, and abundant brownish pubescence not obscuring integument on remaining surface; with a few long, erect dark-brown setae interspersed. Wide central area of postclypeus close to frons with abundant, both yellowish and yellowish-white pubescence not obscuring integument laterally, bristly, pale-yellow centrally; area close to anteclypeus with moderately sparse pale-yellow pubescence; area close to frons with one long, erect seta on each side, setae dark brown basally, gradually yellowish toward apex; area close to anteclypeus with long, erect yellowish setae directed forward. Sides of postclypeus glabrous. Labrum with abundant yellowish-white pubescence not obscuring integument on posterior half and sides of anterior half, glabrous on remaining surface, except fringe of yellowish-brown setae on anterior margin; with long, dark-brown setae interspersed on posterior half, apex of setae yellowish. Antennal tubercles with abundant dark-brown pubescence partially obscuring integument, except yellowish-brown pubescence apically. 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 0.52 times distance between outer margins of eyes. Antennae 3.2 times elytral length, reaching elytral apex at apical third of antennomere V. Scape and pedicel with abundant yellowish-white pubescence not obscuring integument, pubescence slightly yellower on apical third of dorsal surface, especially depending on light source. Antennomeres III–XI with abundant yellowish-white pubescence not obscuring integument, whiter depending on light source, pubescence sparser on dark integumental areas; III–IV with a few short, erect, thick dark-brown setae ventrally. Antennal formula based on length of antennomere III: scape = 0.77; pedicel = 0.10; IV = 1.01; V = 0.93; VI = 0.87; VII = 0.78; VIII = 0.77; IX = 0.72; X = 0.74; XI = 0.69.

Thorax. Prothorax wider than long; anterior constriction narrow, well-marked; sides slightly rounded and divergent from anterior constriction to lateral tubercle, then slightly convergent toward posterolateral angles; lateral tubercles moderately large, mostly conical, directed backward, located on posterior quarter. Pronotum moderately abundantly, coarsely punctate; anterior sulcus glabrous, sides with dense yellowish-brown pubescence, except sparser yellowish-white pubescence on area of lateral tubercles of prothorax; with moderately dense, mostly yellowish-brown pubescence partially obscuring integument centrally and laterally, this pubescent area widened from anterior third, less distinct close to anterior margin; region between yellowish-brown pubescent areas with abundant dark-brown pubescence not obscuring integument; with a few long, erect dark-brown setae laterally after lateral tubercles of prothorax. Sides of prothorax with abundant yellowish-brown pubescence partially obscuring integument, except glabrous anterior sulcus. Prosternum with abundant yellowish-brown pubescence partially obscuring integument laterally, pubescence gradually sparser and yellowish white toward center, except glabrous anterior sulcus. Prosternal process with moderately abundant yellowish-white pubescence not obscuring integument on anterior 3/4, almost glabrous on posterior quarter; narrowest area 0.16 times procoxal width. Mesoventrite with very sparse yellowish-white pubescence centrally, and dense yellowish-brown pubescence on sides. Mesanepisterna and mesepimera with dense yellowish-brown pubescence. Mesoventral process with very sparse yellowish-white pubescence; sides convergent toward apex; apex truncate, 0.17 times mesocoxal width. Metanepisterna with dense yellowish-brown pubescence. Metaventrite with dense yellowish-brown pubescence close to metanepisterna; remaining surface with whitish pubescence, gradually sparser toward center. Scutellum with abundant light yellowish-brown pubescence partially obscuring integument, pubescence whiter close to margins. Elytra. Abundantly, coarsely punctate on anterior half, punctures gradually sparser, finer toward apex on posterior half; circum-scutellar area with abundant yellowish-brown pubescence not obscuring integument, with sparser blackish pubescent maculae interspersed, including close to suture; sides of anterior 2/3 of dorsal surface with moderately abundant dark-brown pubescence, with both pale-yellow and yellowish-white pubescence interspersed, light pubescence more abundant from middle; central area of anterior 2/3 with dense yellowish-white pubescence with brownish maculae interspersed, except dense white pubescence close to suture; fishhook-shaped macula with abundant dark-brown pubescence not obscuring integument; epipleural area with abundant yellowish pubescence partially obscuring integument; posterior third with abundant, both white and yellowish-white pubescence partially obscuring integument on some areas, brownish pubescent maculae interspersed, and sparse dark-brown pubescence on dark integumental areas; apex obliquely truncate, slightly concave. Legs. Profemora with abundant yellowish-brown pubescence partially obscuring integument dorsally and laterally, and abundant whitish pubescence not obscuring integument ventrally. Meso- and metafemora with pubescence as on profemora, except sparser yellowish-brown pubescence on part of dorsal surface and apex of lateral surfaces of femoral club. Protibiae with abundant yellowish-brown pubescence on basal 3/4 of dorsal and lateral surfaces and basal half of ventral surface; remaining surface of dorsal and lateral surfaces with moderately sparse dark-brown pubescence, and remaining ventral surface with dense, bristly dark-brown pubescence. Meso- and metatibiae with moderately sparse pale-yellow pubescence on basal quarter, abundant yellowish-white pubescence on remaining basal 2/3, and moderately abundant, dark yellowish-brown pubescence on apical third, this pubescence appearing to be darker depending on light intensity, bristly ventrally; dorsal surface of mesotibiae with abundant, short, erect dark-brown setae; apical half of metatibiae with short, erect dark-brown setae interspersed. Dorsal surface of tarsomeres I with moderately abundant whitish pubescence not obscuring integument; dorsal surface of tarsomeres II–V with moderately abundant dark-brown pubescence not obscuring integument; metatarsomere I 1.8 times longer than II–III together.

Abdomen. Abdominal ventrites with abundant yellowish-white pubescence not obscuring integument, except glabrous apex of ventrites 2–4; apex of ventrite 5 distinctly concave.

Variation ( Fig. 11 ). Antennae shorter, 2.7 times elytral length, reaching elytral apex at basal quarter of antennomere VI; inner dorsal surface of elytra mostly with yellowish-brown pubescence.

Dimensions (mm) (Holotype male/ paratype males). Total length, 6.20/5.40–5.55; prothoracic length, 1.10/0.90; anterior prothoracic width, 1.15/1.05–1.10; posterior prothoracic width, 1.30/1.15–1.20; maximum prothoracic width, 1.75/1.60–1.65; humeral width, 2.05/1.80–1.85; elytral length, 4.45/4.05.

Type specimens. Holotype male from ECUADOR, Loja: Rumi Wilco Ecolodge , 1600 m, Vilcabamba, 11 Aug 2023, J. Vlasak leg. ( MZSP, formerly JVCO). Two paratype males, same data as holotype ( JVCO).

Etymology. The name striatus (Latin, meaning striped) refers to the general organization of maculae into longitudinal stripes or bands.

Remarks. Hyperplatys striatus new species is slightly similar to H. pichinchensis Nascimento, Santos-Silva and McClarin, 2020 (see photographs on Bezark (2024a) and in Nascimento et al. (2020)) but differs as follows: central area between upper eye lobes with dark-brown pubescence; pronotum with two wide, longitudinal dark integumental bands centrally; lateral tubercles of prothorax directed backward and larger; and elytra without large and oblique dark-brown pubescent band laterally on posterior half of elytra. In H. pichinchensis , the central area between the upper eye lobes has dense yellowish-brown pubescence, pronotum without longitudinal dark integumental bands, lateral tubercles of the prothorax directed mostly laterally and smaller, and elytra with the large and oblique dark-brown pubescent band laterally on the posterior half of elytra.

Figures

Figures 7–11. Hyperplatys striatus new species, holotype male. 7) Dorsal habitus. 8) Ventral habitus. 9) Lateral habitus. 10) Head, frontal view. 11) Paratype male, dorsal habitus.