Xanthopenthes cambodianus, Platia & Pulvirenti, 2023

Xanthopenthes cambodianus n. sp.

( Fig. 18, 40, 45, 77)

ZooBank:http://zoobank.org/ 6CBB6FC7-E301-4BA9-828E-AAEAE6176389

Holotype, ♂, Cambodia, Pursat Prov., Phnom Samkos W.S. Pramaoy, 13.IV.2005, K. Smets & I. Var. ( IRSNB).

Paratypes, 18 ex. ( IRSNB, CPG, CPR)

- 17 ♂, same data as holotype ;

- 1 ♀, Angkor, Preah-Khan Temple, 31.V.2003, J. Constant & K. Smets, light trap.

Diagnosi s. – A species of the X. birmanicus -group sensu Schimmel, 1999 allied to X. niehuisi Schimmel, 1999 from Thailand, for the general shape and size, it can be separated for the narrower body, shorter antennae and the very elongate aedeagus.

Description. – Male.

Moderately shiny.

Coloration. – Entirely dark-brown to yellow-brown, generally with the basal slope of pronotum and elytra lighter but with big contrast; covered with dense, recumbent, yellow-fulvous pubescence.

Head. – Fronsconvex on the vertex, flat from the middle, anterior margin regularly curved and just protruding above the clypeus; punctures umbilicate, with shortest intervalsto contiguous. – Antennae exceedingbytwoarticles the apices of posterior angles of pronotum, slightly serrated from the third article; second article small, globous, long as wide, third-tenth sub-triangular, slender, longitudinally carinate; second and third, taken together, just longer than the fourth; last long as the previous, sub-ellipsoidal. (Fig. 40).

Pronotum. – 1.06-1.09x longer than wide, widest at the middle and at the apices of the posterior angles, very convex, abruptly sloping at sides, nearly vertically at the basal slope; sides sub-parallel from the base to near the anterior margin, posterior angles acuminate, very slightly divergent, bicarinate; carinae short, the inner more apparent; lateral margins complete and visible in a dorsal view in the first thirds of its length; punctuation uniformly distributed, punctures very slightly umbilicate on the disk, with very short, more or less shagreened intervals, clearly umbilicate towards the sides but with short and clearly shagreened intervals.

Scutellum . – Very declivous, tongue-shaped, slightly convex and roughly punctured.

Elytra. – 2.4-2.5 longer than pronotum and 2.6-2.7 longer than wide, a little narrower than pronotum at base, convex; sides sub-parallel from the base to the middle, then very gradually tapering to the apices, the latter regularly rounded; striae regularly marked and punctured; interstriae flat with surface appearing microgranulate.

Last abdominal visible sternite. – Sinuate at sides before the apex.

( Fig. 45).

Aedeagus. – As in the Fig. 18 (length 1.35 mm).

Female. – Body more convex; antennae shorter not reaching the apices of posterior angles of pronotum.

Size. – Length 7.0-9.0 mm, width 1.68-2.12 mm.

Etymology. – The name is derived from the country where the species was collected.

Ecological notes. – Forest edge, at light trap.