Xenorthrius tuberculicollis ( Schenkling, 1902 ) Gerstmeier & Eberle, 2010

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 : 100-103

Xenorthrius tuberculicollis ( Schenkling, 1902) , n. comb.

( Figures 11A, 59 and 70F )

Orthrius tuberculicollis Schenkling 1902: 323 .

Specimens examined: Lectotype (designated here): India: Museum Paris , Darjiling , Harmand 1890; Type; Orthrius tuberculicollis , type Schklg., Schenkling vid. 1901 (♂, MNHN)

Paralectotypes (designated here): India: Museum Paris, Darjiling, Harmand 1890; Orthrius tuberculicollis , type Schklg., Schenkling vid. 1901; Type (♂, RGCM). Museum Paris, Darjiling, Harmand 1890; Orthrius tuberculicollis , Type Schklg.; Type (MNHN). Museum Paris, Darjiling, Harmand 1890; Schenkling det.; Syntypus (1 ♂ ex., 1 ♀ ex., SDEI). Museum Paris, Darjiling, Harmand 1890; Type; Orthrius tuberculicollis , type Schklg., Schenkling vid. 1901 (MNHN).

Others: India: Darjeeling, Juni, Fruhstorfer leg.; Schenkling det.; D. Ent. Inst. Dahlem 1924; Metatype; Orthrius tuberculicollis, Schenkl. (RGCM) . Sikkim, Regenzeit, H. Fruhstorfer; 1938 ex Mus., Nat. Hung. Budapest; J.B. Corporaal det. 1938: Orthrius tuberculicollis ; Homotype, Orthrius tuberculicollis , ’19 Schklg. (ZMAN) China: China: Szechwan, Wen-ch’uan, 4–6000’, 1938-VII, D.C. Graham leg. (3ex., NMNH).

Measurements: (10 specimens measured) Average total length: 8.0mm, range: 7.0– 9.1mm, average elytral length: 5.9mm, average elytral width: 2.4mm, average pronotal length: 1.5mm, average pronotal width: 1.6mm, average head width: 1.5mm.

Head: Red-brown, cranium vested with short and long yellowish setae, distinctly punctured, interstices smaller one diameter of punctures; posterior part of clypeus red-brown, with long setae especially laterally, punctation large but sparse; ventral part smooth except wrinkles behind the eyes; antennae red-brown, antennomeres gradually decreasing in length from A3 towards A8, A9 to A11 forming a distinct club, A9 separated from A10 and A11, male antennae reaching base of pronotum when laid back; gular sutures parallel, gular process broad.

Thorax: Average pronotal length:width ratio 1.0:1; pronotum red-brown, vested with fine long setae, pronotal arch with weak punctation, interstices irregularly, mostly larger than one diameter of punctures, pronotum proper smooth; mesepimeron not smooth in basal half, surface wrinkled, transverse sulcus on anterior part of mesosternum and mesepisternum small, especially weakly developed on mesosternum; prosternum red-brown, smooth; mesosternum red-brown, vested with yellowish setae, surface only slightly wrinkled; metasternum red-brown, punctation very fine and sparse; scutellum circular, red-brown.

Elytra: Average length:width ratio 2.5:1; uniformly red-brown, vested with short decumbent and few longer erect setae, punctation small, often weak, striae 1 to 3 mostly without punctation, striae 4 and 5 with some smaller punctures in basal half, striae 6 to 8 with large punctures, striae 9 and 10 again with weaker punctation, interstices between and within striae 6 to 8 smaller than one diameter of punctures, punctation never rasp-like, carination absent

Legs: Red-brown, relatively long, tarsal pulvilli yellowish-pale; metatibiae more or less straight, tibial carination absent.

Abdomen: Ventrites darker red-brown, punctation distinct and denser at apical margin of each ventrite; lateral margins of male pygidium converging; male ventrite 6 with distinct U-shaped emargination. Male genitalia ( Fig. 59 ): Tegmen short and broad, ventral sclerotization apically dilated, sinus broad; basal half of phallic plates narrow, apical half broad, sinuous, phallic plicae distinctly visible; spicular fork dividing into two branches after one quarter to one fifth of length.

Distribution: India, China (Sichuan).

Seasonal occurrence: Collected in July.

Figures

FIGURE 59. Xenorthrius tuberculicollis: (A) Tegmen in ventral view, (B) phallus in ventral view, (C) tip of aedeagus in lateral view, (D) spicular fork, (E) male pygidium, (F) male ventrite 6 and distribution map.

FIGURE 70. Habitus photographs: Xenorthrius supapicalis (A), Xenorthrius subfasciatus (B), Xenorthrius supraflaveolis n. sp. (C), Xenorthrius temeris n. sp. (D), Xenorthrius truncatus (E) and Xenorthrius tuberculicollis (F). Scale bars = 4mm.