Xanthopenthes viklundi, Platia & Pulvirenti, 2023

Xanthopenthes viklundi n. sp.

( Fig. 17, 39, 46, 76)

ZooBank:http://zoobank.org/ A8CE859F-A8AB-4674-A55B-A87C09C108AB

Holotype, ♂, Laos, Luang Nam , Tha Nam Ha NBCA, Lakkhammai village, 30.IV.2005, N. Jönsson, T. Malm & B. Viklund, at light ( NHRS).

Paratypes, 9 ex. (8 ♂, 1♀) ( CPG, NHRS)

- 5 ♂, same data as Holotype .

- 2 ♂, 1 ♀, Thailand, 100 km NE Nan Doi Phu Kha N.P., 20.25. IV.2004, F.Pavel . - 1 ♂, Vietnam, Vinh Phuc Prov., Tam Dao , 1200m, 19-22.VI.2014, M. Hauser & N. von Ellenrieder .

Diagnosi s. – A species of the X. birmanicus -group sensu Schimmel, 1999 for the general shape and colour very allied to X. klausnitzeri Schimmel from Thailand, for the shape of the last sternite in the male, a character not discussed in the original description of the surnamed species, it can be separated for the more robust body, longer antennae and elongated aedeagus.

Description. – Male.

Moderately shiny.

Coloration. – Head and the greater part of pronotum except for the basal slope and the posterior angles, around of scutellum, blackish; all the remaining parts including antennae and legs, yellow-ferruginous; covered with dense, recumbent, fulvous pubescence.

Head. – Frons convex on the vertex, flat from the middle to the anterior margin, the latter complete, simple, sub-arcuate, directed downwards and just protruding above the clypeus; punctuation strong, punctures umbilicate with shortest intervals to contiguous. – Antennae very long, exceeding by nearly four articles the apices of the posterior angles of pronotum, slightly serrated from the third article on: second article sub-cylindrical, short, as long as wide, third sub-conical, fourth-tenth sub-triangular, longitudinally carinate; second and third, taken together, long as the fourth; fourth-tenth gradually slenderer, lasta little longer than the previous, sub-ellipsoidal, slightlyconstricted before the apex.(Fig. 39).

Pronotum. – Just longer than wide tolong as wide, widestat the apices of the posterior angles, convex, abruptly sloping at sides, nearly vertically on the basal slope; sides from the base nearly and regularly narrowing to the apices; posterior angles long, acuminate, not or very slightly divergent, bicarinate; carinae short but sharp and diverging; lateral margins complete and in the first half visible on a dorsal view; punctuation coarse and uniformly distributed except for the basal slope; punctures umbilicate, on the disk with shortest, sub-shiny intervals, gradually denser and with shagreened intervals towards the sides.

Scutellum . – Strongly declivous, tongue-shaped, rather acuminate at the apex, flat or slightly convex, densely punctured.

Elytra. – 2.5x longer than wide and 2.7x longer than wide, convex; sides sub-parallel in the first half then gradually tapering to the apices, the latter rounded to very slightly truncated; striae regularly punctured, interstriae flat, densely punctures, sometimes with rough surface.

Prosternal process. – Just bent behind the procoxal cavities and running horizontal after the middle with apex not emarginate.

Last visible sternite. – Impressed at sides. ( Fig. 49).

Aedeagus. – As in the Fig. 17 (length 1.56 mm).

Female. – Extremely similar to the male in the colour of the integuments, with short antennae and sub-parallel sides of pronotum.

Size. – Length 9.0- 10.5 mm, width 2.25-2.56 mm.

Etymology. – The species is dedicated to one of the collectors, B. Viklund that sent us some material for study.