Xenorthrius truncatus Gorham, 1893

Gerstmeier, Roland & Eberle, Jonas, 2010, Revision of the Indo-Australian checkered beetle genus Xenorthrius Gorham, 1892 (Coleoptera: Cleridae, Clerinae) 2584, Zootaxa 2584 (1), pp. 1-121 : 100

publication ID	https://doi.org/ 10.11646/zootaxa.2584.1.1
DOI	https://doi.org/10.5281/zenodo.10538445
persistent identifier	https://treatment.plazi.org/id/03F45644-0158-FFB6-6FD3-FF3CDB19B1CE
treatment provided by	Felipe
scientific name	Xenorthrius truncatus Gorham, 1893
status

Treatment

( Figures 4A View FIGURE 4 , 6A View FIGURE 6 , 58 View FIGURE 58 and 70E View FIGURE 70 )

Xenorthrius truncatus Gorham 1893: 576 .

Specimen examined: Holotype: India: 612/2; Doherty; Type; Type; Assam Patkai M ts; Fry Coll., 1900.100.; Xenorthrius truncatus, Gor ; Xenorthrius truncatus Gorh. , Assam Type (♂, BMNH).

Measurements: (1 specimen measured) Total length: 12.3mm, elytral length: 7.9mm, elytral width: 3.2mm, pronotal length: 3.5mm, pronotal width: 2.6mm, head width: 2.6mm.

Head: Red-brown, cranium densely vested with short yellow setae, punctation weak, interstices larger than diameter of punctures; posterior part of clypeus red-brown, with large punctation and a few long setae laterally, smooth centrally; ventral part wrinkled, smooth centrally; antennae red-brown, A4 longer than A3, antennomeres gradually decreasing in length from A4 towards A8, A9 to A11 forming an indistinct club, male antennae reaching base of pronotum when laid back; gular sutures diverging apically, gular process narrow.

Thorax: Average pronotal length:width ratio 1.4:1; pronotum red-brown, densely vested with short yellow setae, pronotal arch relatively broad, punctation extremely fine dorsally, densely punctured laterally, pronotum proper stronger punctation, interstices about one half diameter of punctures; prosternum light redbrown, smooth; mesosternum light red-brown, margins darkened, vested with yellowish setae; metasternum light red-brown, vested with fine setae, punctation sparse and fine; transverse sulcus on anterior part of mesosternum and mesepisternum relatively distinct on mesosternum, anterior metasternal process with two strongly sclerotized, ventrally projecting, edges; scutellum oval, red-brown.

Elytra: Average length:width ratio 2.5:1; apices dentate ( Fig. 6A View FIGURE 6 ), red-brown, with faded lighter area centrally, vested with short decumbent and longer erect setae, punctation relatively large, striae 1 and 2 obsolete behind basal third of elytra, striae 3 to 8 almost reaching apex whereas striae 9 and 10 are very weakly punctured, interstices between striae sometimes about one diameter of punctures, mostly smaller, interstices within striae also about one diameter of punctures in humeral region but becoming very small towards apex, punctation rasp-like in basal third, interstices between striae slightly carinated in apical half.

Legs: Yellow, tarsi red-brown, tarsal pulvilli pale; metatibiae slightly bent distally, anterior and posterior face of each tibia carinate, carination very weak on posterior faces of pro- and mesotibia, carination redbrown, distinct, especially on metatibia.

Abdomen: Ventrites light red-brown, punctation weak and sparse; male pygidium broadest basally, lateral margins converging apically, apical margin is flattened; male ventrite 6 with broad U-shaped shallow emargination. Male genitalia ( Fig. 58 View FIGURE 58 ): Aedeagus strongly elongate; phallic plates broad; spicular fork dividing into two branches after third of length.

Distribution: India.

Seasonal occurrence: No collection date available.