Solskyia lhozhaga, Bai & Liu & Ren, 2022

Bai, Xing-Long, Liu, Jing-Ze & Ren, Guo-Dong, 2022, Contribution to the knowledge of the genus Solskyia Solsky, 1881 (Coleoptera, Tenebrionidae, Akidini) from China, ZooKeys 1122, pp. 1-18 : 1

Solskyia lhozhaga sp. nov.

Figs 10 , 11-14 , 26-29

Type material.

Holotype: ♂ (HBUM), 2014-VIII-7 / 西藏洛扎县生格乡 [ Sênggê Township, Lhozhag County, Xizang] / 任国栋 白兴龙 单军生 [leg. Guo-Dong Ren, Xing-Long Bai, Jun-Sheng Shan] / 河北大学博物馆 [Hebei University Museum] // 28°12.752'N, 91°00.770'E / Alt. 3225 m / 河北大学博物馆 [Hebei University Museum]. Paratypes: 20 ex. (HBUM), 2014-VIII-7 / 西藏洛扎县生格乡 [ Sênggê Township, Lhozhag County, Xizang] / 任国栋 白兴龙 单军生 [leg. Guo-Dong Ren, Xing-Long Bai, Jun-Sheng Shan] / 河北大学博物馆 [Hebei University Museum] // 28°12.752'N, 91°00.770'E / Alt. 3225 m / 河北大学博物馆 [Hebei University Museum]; 1 ex. (HBUM), 2022-VII-22 / 西藏洛扎拉康镇杰拉山 [Gyai La Shan, Lhakang Town, Lhozhag County, Xizang] / 任国栋 牛一平 白兴龙 刘凯璇 [leg. Guo-Dong Ren, Yi-Ping Niu, Xing-Long Bai, Kai-Xuan Liu] / 河北大学博物馆 [Hebei University Museum] // 28°08.0839'N, 91°09.3682'E / Alt. 3302 m / 河北大学博物馆 [Hebei University Museum].

Diagnosis.

This new species closely resembles S. infossata sp. nov., but can be distinguished from the latter by the following characters: (1) punctures on head coarser (finer in S. infossata ); (2) lateral margins of pronotum arcuate (weakly “S” curved in S. infossata ), posterior angles weakly obtuse (sharp and protruding outwards in S. infossata ). This new species is also somewhat similar to S. lhasana , it differs from the later by the following characters: (1) body wide-oval (oval elongated in S. lhasana ); (2) punctures on head coarser (finer in S. lhasana ); (3) posterior angles of pronotum weakly obtuse (sharp and protruding outwards in S. lhasana ), coarsely punctate (finely in S. lhasana ); (4) elytra wide and short (narrow and long in S. lhasana ), base wider than pronotum (narrower in S. lhasana ), lateral margins widest near middle (subparallel in S. lhasana ), humeri right-angled, rounded apically (widely obtuse in S. lhasana ), surface of elytra and epipleura with punctures (granules in S. lhasana ).

Distribution.

China: Xizang.

Etymology.

The species name is derived from the type locality - Lhozhag.

Description.

Total length 16.6-19.2 mm; width 8.5-9.9 mm. Wide-oval, dorsal side depressed, ventral side strongly convex. Body black, weakly shiny; labrum, palpi, antennomeres IX-XI and tarsi brown.

Head. Anterior margin of labrum nearly straight, with long setae, lateral margins parallel, distal part punctate, basal half smooth. Anterior margin of clypeus nearly straight at middle and serrate, lateral angles weakly toothed and protruding forwards, with a shallow incision between lateral angles and anterior part of genae; surface convex, sparsely and coarsely punctate. Clypeogenal suture inconspicuous. Dorsal surface of head flat, lateral sides above eyes longitudinally carinate, sparsely and coarsely punctate. Genal margins nearly right-angled protruding outwards before eyes, straightly converging forwards, strongly and arcuately narrowing backwards, sparsely and coarsely punctate. Eyes transverse. Temples behind eyes strongly and roundly narrowing backwards, coarsely punctate. Mentum transverse, anterior margin widely triangularly emarginate, lateral margins subparallel and raised. Antennae slender and long, reaching beyond the pronotal base; basal part of antennomere I invisible in dorsal view, II very short, III very long, IV-VIII gradually shorter, X nearly spherical; XI sharped-oval, narrow and small, closely joint with X; III-VIII thicker at apex; apex of I-X with sparse setae and gradually longer; inner side of apex of VIII, inner side and outside of apex of IX-X, apex of XI with sensilla.

Prothorax. Pronotum transverse, widest at middle, 2.6 times as wide as long, significantly wider than head; anterior margin deeply emarginate, beaded laterally; lateral margins arcuate, broadly beaded and strongly raised; posterior margin bisinuate, finely beaded; anterior angles sharp and protruding forwards, posterior angles weakly obtuse; lateral margins and sides wrinkled; surface strongly depressed with transverse depression in middle, weakly triangular convex in middle of anterior margin, sparsely and coarsely punctate. Prothoracic hypomera depressed, smooth, shallowly and sparsely punctate. Prosternal process weakly sloping behind procoxae, apex blunt in lateral view.

Pterothorax. Elytra wide-oval, widest near middle, 1.1 times as long as wide; anterior margin nearly straight, base slightly wider than pronotum; lateral sides arcuate, weakly narrowing toward base and strongly narrowing toward apex from middle, lateral margins raised, broad and wrinkled at base; humeri right-angled, rounded apically; surface depressed, with deeper depression at base, strongly convex in middle, declivity sharply sloping downwards; sparsely and finely punctate, shallowly near base, lateral sides and apex, inconspicuously wrinkled; epipleura wide, weakly convex, sparsely and finely punctate, inconspicuously wrinkled. Scutellum triangular.

Abdomen. Ventrites strongly convex, densely and coarsely punctate, sparsely and shallowly near lateral sides and apex of the last ventrite; apical margin of the last ventrite widely rounded.

Legs. Slender and long; femora claviform, smooth; tibiae straight, rough; ventral surface of pro- and mesotarsomeres I-IV and metatarsomeres I-III with hairy tuft at apex; claws well developed.

Aedeagus. As in Fig. 10D-F . Length 2.6 mm, width 0.5 mm. Parameres length 2.0 mm, width 0.4 mm.

Ovipositor. As in Fig. 10G, H .

Sexual dimorphism. Females usually with slightly wider and more convex elytra, but in many cases, it is impossible to distinguish the two sexes without extracting the genitalia.

Figures

Figure 10. Characters of Solskyia lhozhaga sp. nov. A-F male A head B antenna C pronotum D-F aedeagus in dorsal, lateral and ventral view, respectively G, H female: ovipositor in dorsal and ventral view, respectively. Scale bars: 3.5 mm (A-C); 1.0 mm (D-H).

Figure 11 - 14. Habitus of Solskyia lhozhaga sp. nov. 11, 12, 14 male (holotype) in dorsal, ventral and lateral view, respectively 13 female (paratype). Scale bars: 3.5 mm.

Figure 26 - 29. Habitat 26, 27 and adults 28, 29 of Solskyia lhozhaga sp. nov. in Sengge Township, Lhozhag County, Xizang, China.