Procraerus acuminiformis, Platia & Pulvirenti, 2023

Procraerus acuminiformis n. sp.

( Fig. 9, 29, 52, 65)

ZooBank:http://zoobank.org/ 2ECF6A98-A036-45D6-A6AF-FEB186172E76

Holotype, ♂, Indonesia, Sumatra, Dolok , 2000 m, E. Mjöberg ( NHRS).

Diagnosi s. – A species of the P. babai -group sensu Schimmel, 1999, well distinct from all other for the shape of the posterior angles of pronotum long and very acuminate.

Description. – Male.

Very shiny.

Coloration. – Entirely yellowish only with the antennae a little darker; covered with dense, recumbent, yellow-fulvous pubescence.

Head. – Frons flat on the vertex, flat from the middle to the anterior margin, the latter simple, shiny, arcuate, directed downwards and just protruding above the clypeus; punctuation dense, punctures deep, simple, with short, variable, very shiny intervals. – Antennae exceeding by more than three articles the apices of the posterior angles of pronotum, very slightly serrated from the fourth article on; second article sub-cylindrical, third sub-conical, subequal in length, taken together very shorter than the fourth; fourth-tenth conical, very elongate, last sub-ellipsoidal, pointed to the apex (Fig. 29).

Pronotum. – Long as wide, widest at the apices of the posterior angles, convex on the anterior half and abruptly sloping at sides, less convex in the posterior half, gradually sloping at sides and base, sides parallel from the middle to the anterior margin, slightly dilated in the basal half, sinuate before the posterior angles, the latter long, extremely acuminate, strongly divergent and carinate; carina very fine, not raised, in the first half nearly confused with the lateral margins then gradually diverging; from the beginning of the carina we can see a vestige of a second carina directed inside; lateral margins complete and visible for about the two thirds of its length in a dorsal view; punctuation moderate; punctures deep, simple or very slightly umbilicate, spaced with intervals equal to larger than their diameters on all the surface. ( Fig. 53).

Scutellum . – Shield-shaped, ridged at bas, pointed at apex, convex, punctured.

Elytra. – 3.1x longer than pronotum and 3.0 longer than wide, convex; sides widest at the middle; apices entire; striae finely and densely punctured, interstriae flat with sub-rugose surface.

Aedeagus. – As in the Fig. 9 (length 1.0 mm).

Size. – Length 8.6 mm, width 1.93 mm.

Female. – Unknown.

Etymology. – The name is derived from the very acute posterior angles of pronotum.