Pachyrhynchus faisali Bollino, 2023

Bollino, Maurizio, 2023, About some Indonesian Pachyrhynchus Germar 1824 with description of a new species (Coleoptera, Curculionidae, Entiminae, Pachyrhynchini), Zootaxa 5227 (4), pp. 495-500 : 496-498

Pachyrhynchus faisali Bollino , sp. nov.

( Figs. 1A–1G )

http://zoobank.org/ urn:lsid:zoobank.org:act:EA6E6229-44F5-4EA5-861B-2D710D48809C

Type material. Holotype, male ( Figs. 1A–1B ): Indonesia — West Papua / Teminabuan / South Sorong Regency / vii.2020 / lg. local people—coll. Bollino (typed on white card) // HOLOTYPE / Pachyrhynchus faisali / BOLLINO, 2023 (typed on red card) ( SMTD) .

Diagnosis. Pachyrhynchus faisali is similar in general appearance to P. forsteni ; however, P. faisali is easily distinguishable from P. forsteni by the elytra being striate-punctate, the unique color of the scaly markings on the prothorax and elytra, and the slightly more globose eyes.

Description. Male. Dimensions: LB: 11.1; LR: 1.9; WR: 2.0; LP: 3.9; WP: 4.1; LE: 7.2; WE: 5.7.

Color pattern. Integument glossy black with weak bluish luster on rostrum, underside with weaker luster. Body subglabrous, with cobalt blue scaly markings. Rostrum dorsally minutely pubescent; each side of rostrum covered with longer hairs on lateral part before antennal scrobe, small patch of cobalt blue scales on lateroventral part behind antennal scrobe.

Prothorax with the following three cobalt blue scaly markings: 1) small sublateral elongate patch of round scales near subapical groove; 2) very small sublateral patch of round scales near subbasal groove; 3) lateral patches along basal margin. Each elytron with the following sixteen scaly markings: 1–5) subbasal round spot on interval 3, 5, 7, 9 and 10, those on interval 3, 9 and 10 being smaller; 6–11) post-median round spot on interval 2, 3, 4, 5, 6 and 8, those on interval 2, 4 and 6 being smaller and slightly more anterior; 12) post-median elongated spot on interval 10; 13–15) subapical round patches on interval 3, 5 and 7; 16) preapical transverse stripe. Femora partially covered with fine hairs. Tibiae fringed with fine brownish hairs along internal margins, mingled with darker setae; fore and middle tibiae sparsely covered with brownish hairs becoming denser along internal margins and on apical parts; hind tibiae mostly covered with similar hairs to those on fore tibiae. Mesosternum sparsely pubescent with few cobalt blue scales; metasternum glabrous with lateral patches of cobalt blue scales. Venter subglabrous. Ventrites 1 and 2 with sublateral patches of cobalt blues scales, that of ventrite 2 being smaller.

Head moderately minutely punctate; forehead flattish; eyes moderately convex from lateral contour of head.

Rostrum nearly as long as wide (LR/WR 0.95); dorsum moderately minutely punctate, with shallow, narrowly arrowhead-shaped concavity on middle of basal half, and shallow oval impressions in lateral portion of basal half, weakly bulging on apical half; apical bulge dorsally flattish, smooth; dorsal contour of forehead and rostrum subcontinuous; dorsal contour of rostrum almost flat in basal half, then slightly raised from center to apical quarter, and finally gradually declined at apex.

Antennae with scape moderately clavate, flattened, slightly shorter than funicle; funicular segment I nearly two times as long as wide, slightly longer than II; segment II slightly less than twice width, twice as long as III; segments III– VI subequal in length, nearly as long as wide; segment VII as long as VI, wider than long; club narrowly subellipsoidal, 2.25 times as long as wide.

Pronotum subspherical, nearly as long as wide (WP/LP 1.05); dorsum smooth, faintly minutely punctate, moderately convex; dorsal contour highest at middle; lateral contour strongly dilated from moderately constricted base, widest just behind middle, faintly convergent apicad; basal margin subtruncate; apical margin shallowly arched; subbasal and subapical grooves indistinct.

Elytra subobovoid (LE/WE 1.26), wider than prothorax (WE/WP 1.39), nearly twice as long as prothorax, (LE/LP 1.85), striate-punctate, with intervals evenly flat; dorsum dorsally convex; dorsal contour highest before middle; lateral contour gently dilated from base, widest at middle, then more strongly convergent to apex, without subapical constriction.

Metasternum and ventrite I conjointly depressed on disc; discal depression deep on ventrite I, apically reaching apical margin of ventrite I.

Legs slender; femora moderately clavate; anterior margins of fore femora and posterior margins of middle and hind femora weakly emarginate in subapical parts; tibiae somewhat strongly incurved, finely serrate along internal margins, mucronate at apices.

Genitalia as illustrated ( Figs. 1D–1G ).

Female: unknown.

Distribution. This species is known only from the type locality.

Etymology. This species is dedicated to my friend Faisal Latutuapraya (Bali, Indonesia) for his contribution to the knowledge of the Indonesian Curculionidae .

Figures

FIGURE 1. Pachyrhynchus faisali sp. nov. Holotype.A: dorsal habitus; B: ventral habitus; C: lateral habitus; D: penis in lateral view; E: penis in dorsal view; F: penis in ventral view; G: sternite IX in dorsal view.