Hyperplatys rileyi, Heffern & Santos-Silva, 2022

Heffern, Daniel & Santos-Silva, Antonio, 2022, Description of two new Panamanian species of Acanthocinini and notes on Eleothinus abstrusus Bates (Coleoptera, Cerambycidae, Lamiinae), Zootaxa 5178 (3), pp. 256-264 : 257-259

Hyperplatys rileyi sp. nov.

( Figs 1–4 )

Description. Holotype male. Head capsule dark brown; anteclypeus dark reddish brown; labrum orangish brown, lighter toward anterior margin; ventral mouthparts mostly orangish brown; scape dark reddish brown basally, reddish brown on remaining basal half and most of basal surface, dark brown on posterior half of dorsal and lateral surfaces; antennomeres III–VIII yellowish brown, except dark brown apex; antennomere IX yellowish brown on basal half, dark brown on posterior half; antennomere X dark brown; antennomere XI brownish. Pronotum dark reddish brown, except large V-shaped dark brown macula on center of anterior region. Sides or prothorax dark reddish brown; ventral surface of prothorax orangish brown; ventral surface of meso- and metathorax brownish, with irregular orangish-brown areas interspersed. Elytra dark reddish brown, except brown humeral region, dark brown sutural band on basal quarter, sparse, small, subcircular brownish spots interspersed, and large, subcircular black macula dorsally after middle. Femora orangish brown, except dark brown sides and apex of club of profemora, most of sides of club of mesofemora, and part of sides of club of metafemora. Protibiae orangish brown, except brown apical region; meso- and metatibiae orangish brown on basal half, dark brown on apical half. Protarsi dark brown; meso- and metatarsomere I orangish brown, and remaining surface of I and tarsomeres II–V dark brown. Ventrites reddish brown with irregular dark brown areas interspersed.

Head. Frons finely, densely punctate; with abundant straw-colored pubescence not obscuring integument, and one long, erect brown seta on each side close to eye; area between antennal tubercles and upper eye lobes transversely depressed, glabrous; area between antennal tubercles with abundant yellow pubescence centrally, except glabrous median groove, and straw-colored pubescence laterally; area between upper eye lobes with abundant yellow pubescence partially obscuring integument, except glabrous median groove; remaining surface of vertex glabrous. Area behind eyes with abundant yellow pubescence close to eye, slightly paler toward ventral surface, glabrous on remaining surface. Genae with straw-colored pubescence not obscuring integument, except glabrous apex. Antennal tubercles with straw-colored pubescence not obscuring integument, yellower on some areas. Gulamentum glabrous, except narrow depressed anterior region with yellowish pubescence not obscuring integument, and a few long, erect brown setae interspersed. Wide central area of postclypeus with pubescence as on frons, and one long, erect, thick blackish seta on each side; sides of postclypeus glabrous. Labrum with pale yellow pubescence not obscuring integument close to anteclypeus and laterally, glabrous anteriorly; with transverse row of short, erect, thick blackish setae on posterior half, and fringe of yellowish-brown setae on anterior margin. Upper eye lobes wide, with seven rows of ommatidia; distance between upper eye lobes 0.21 times distance between outer margins of eyes; in frontal view, distance between lower eye lobes 0.50 times distance between outer margins of eyes. Antennae 3.6 times elytral length, reaching elytral apex at apex of antennomere V. Scape, pedicel, and antennomeres III–XI with yellowish-white pubescence not obscuring integument, with short, erect, sparse white setae interspersed on posterior antennomeres; apex of ventral surface of scape, ventral surface of pedicel, ventral surface of basal half of antennomere III, and posterior half of ventral surface of antennomere IV with a few short, thick, erect blackish setae; ventral apex of antennomeres III–VIII with short, thick black setae. Antennal formula (ratio) based on length of antennomere III: scape = 1.00; pedicel = 0.17; IV = 1.00; V = 1.00; VI = 0.94; VII = 0.89; VIII = 1.00; IX = 1.05; X = 1.14; XI = 1.51.

Thorax. Prothorax wider than long; sides slightly rounded from anterolateral angles to lateral tubercles, distinctly narrowed after them; lateral tubercles short, conical, with apex slightly directed backward, located on beginning of posterior quarter. Pronotum coarsely, abundantly punctate; with abundant pale yellow pubescence partially obscuring integument on sides of anterior half, anterior margin, and center of anterior third, sparse brownish pubescence on anterior regions of V-shaped dark brown macula, abundant white pubescence not obscuring integument on remaining central region and center of posterior region, and yellowish pubescence partially obscuring integument on sides of posterior region. Sides of prothorax with sculpturing as on pronotum; with abundant yellowish pubescence partially obscuring integument, slightly lighter toward posterior region, and a few long, dark setae interspersed posteriorly near lateral tubercle. Prosternum with abundant yellowish-white pubescence laterally, distinctly sparser centrally. Prosternal process with sparse yellowish-white pubescence; narrowest area 0.2 times procoxal width. Ventral surface of meso- and metathorax with dense yellowish-brown pubescence laterally, with distinctly sparse yellowish-white pubescence on central area of mesoventrite, and with abundant yellowish-white pubescence not obscuring integument on wide central area of metaventrite, except glabrous metathoracic discrimen. Scutellum with abundant light yellowish-brown pubescence not obscuring integument, slightly yellowish-white laterally. Elytra. Coarsely, somewhat abundantly punctate basally, punctures gradually finer and sparser toward apex; apex obliquely, slightly concave, with outer angle triangularly projected, and sutural region forming a right angle; humeral carina present, but slightly marked, especially from middle; with abundant pale yellow pubescence partially obscuring integument basally and laterally; with abundant, distinctly whitish pubescence partially obscuring integument on remaining surface, except small, somewhat sparse, subcircular spots with brownish pubescence not obscuring integument, and blackish pubescence on subcircular black macula. Legs. Femora with abundant yellowish-white pubescence not obscuring integument. Tibiae with abundant yellowish-white pubescence not obscuring integument, except bristly, dark brown pubescence on ventral apex of protibiae, longitudinal dark pubescent band on posterior half of inferior region of outer side of protibiae, bristly, thick, abundant dark brown setae on posterior third of dorsal surface of mesotibiae, and short, erect, sparse, thick blackish setae on posterior half of metatibiae. Metatarsomere I 1.3 times longer than II–III together.

Abdomen. Ventrites very finely, sparsely punctate, except smooth apex of ventrites 1–4; with abundant yellowish-white pubescence not obscuring integument, forming fringe on apex of ventrites 1–4.

Dimensions in mm. Total length, 3.60; prothoracic length, 0.65; anterior prothoracic width, 0.95; posterior prothoracic width, 0.90; maximum prothoracic width, 1.10; humeral width, 1.30; elytral length, 2.40.

Type material. Holotype male from PANAMA, Panamá Oeste: Panama Pacifico, Sendero Explorer , 8.8994ºN 79.5907ºW, 13.IX.2021, E. Riley leg. ( TAMU).

Etymology. The new species is dedicated to Edward Riley of College Station, Texas, friend of the first author and collector of the holotype.

Remarks. Unfortunately, during the manipulation of the specimen to take photographs, an accident occurred which caused the loss of the apical part of the antennomere X and antennomere XI of the left antenna, antennomere XI of the right antenna, and the left middle leg. The segments could not be located to paste them onto a card.

Hyperplatys rileyi sp. nov. is similar to H. argentina (Berg, 1889) , but differs by the upper eye lobes wide and as far apart as the width of one upper lobe (narrow and almost three times as far apart as the width of one upper lobe in H. argentina ), pronotum with wide V-shaped dark macula on anterior region (oblique dark band on each side of anterior region, divergent from near anterior margin toward their apex in H. argentina ), and subcircular dark macula on posterior region of the elytra (oblique dark macula on posterior region of the elytra in H. argentina ). It differs from H. griseomaculata Fisher, 1925 (see photographs on Bezark 2022) by the stouter body (slender in H. griseomaculata ), elytra shorter than twice the humeral width (longer in H. griseomaculata ), and elytra with subcircular dark macula on posterior region (two large and irregular dark maculae on posterior region in H. griseomaculata ); from H. maculata Haldeman, 1847 , and H. melzeri ( Gilmour, 1965) (see photographs on Bezark 2022), by the pronotum with large V-shaped dark macula (subcircular in H. maculata and H. melzeri ), and elytra proportionally shorter (longer in H. maculata and H. melzeri ); and from H. montana Casey, 1913 (see photographs on Bezark 2022) by the upper eye lobes wider and closer from each other (narrow and almost three times as far apart as the width of one upper lobe in H. montana ), and pronotum with dark V-shaped maculae (with four subcircular dark maculae in H. montana ).

Figures

FIGURES 1–4. Hyperplatys rileyi, holotype male: 1) Dorsal habitus; 2) Ventral habitus; 3) Lateral habitus; 4) Head, frontal view.