Anthidium (Anthidium) xuezhongi Niu & Zhu, sp. nov.

(Fig. 34 a–j, male; Fig. 35 a–f, female)

Diagnosis: The new species can be distinguished from other Chinese Anthidium species by the following combination: apical process of male S8 is trifid (Fig. 34h), ventral margin at sub-middle part of male gonostylus is emarginate and with small acute projection (Fig. 34j); female anterior lower part of scape is reddish-brown near base (Fig. 35b), female apical clypeal margin is nearly smooth (Fig. 35c), and female T6 is completely yellow (Fig. 35f).

Description: Male. BL = 12.5–13.0 mm (Fig. 34a); head broader than long, HW: HL = 76: 64 (Fig. 34b); gena slightly broader than eye, GW: EW = 20: 18. Clypeus nearly as broad as long, apical margin of clypeus smooth, straight medially (Fig. 34b); mandible with four teeth, apical one sharp, longest, third and fourth ones combined together; omaular carina absent; pronotal lobe rounded anteriorly; scutellum rounded posterolaterally, without tooth, not greatly overhanging metanotum and propodeum (Fig. 34c); propodeum without fovea behind spiracle; fore wing with two submarginal cells, cells nearly equal in length, second recurrent vein meets distal to second submarginal crossvein; arolia absent; apical margin of S6 deeply emarginated, with distinct long and sharp lateral lobe, and median lobe broad triangular (Fig. 34f), S7 as in Fig. 30g; apical process of S8 broad trifid (Fig. 34h); T6 with distinct long and sharp lateral spine (Fig. 34a); T7 with broad triangular lateral spine, but without submedian spine (Fig. 34e), median spine of T7 subrectangular (Fig. 34e); genitalia respectively shown in Fig. 34i (in dorsal view) and Fig. 34j (in lateral view), ventral margin at sub-middle part of gonostylus emarginated and with small acute projection (Fig. 34j). Maculations of metasomal terga variable (Fig. 34d, Fig. 34 d-1), T1 with two light yellow lateral spots (or T1 with light yellow band, band broadly interrupted medially and with backward notches), T2 with four light yellow spots (or T2 with light yellow band, band narrowly interrupted medially and with forward notches), T3–T4 with interrupted medially light yellow bands, and bands with forward notches sublaterally (or T3–T4 with not interrupted medially light yellow bands, bands with semicircle-shaped black area medially), T5 with not interrupted band, band with semicircle-shaped area medially (or band on T5 complete, without black area medially), T6 with not interrupted band, band with shallow V-shaped black area medially (or T6 light yellow except lateral spine black), T7 with two separated large maculations (Fig. 34e) (or T7 light yellow except lateral spine and median spine black). Integument black, except reddish-brown on anterior surface of scape and F2; dark blackish brown on anterior surface of F3–F11 (Fig. 34b, Fig. 34c), coxae, trochanters, basal parts of femora; light yellow on clypeus, lower part of paraocular area, outer surface of mandible except teeth, one small marking on vertex near apex of eye respectively, tibiae, basitarsi (Fig. 34a) and maculations of metasomal terga (Fig. 34d); yellowish on tegula (Fig. 34c); reddishbrown on teeth (Fig. 34b); slightly brownish on mediotarsi and distitarsi (Fig. 34a); dark brownish on sterna (Fig. 34f). Fore wing hyaline, veins and stigma brownish. Lower part of face, gena, and lower part of mesepisternum covered with long and dense white pubescence (Fig. 34a, Fig. 34b); vertex covered with yellow pubescence; scutum and scutellum covered long and sparse pale yellowish-white pubescence (Fig. 34c); metasomal terga covered with long sparse yellowish-white pubescence; apical margin of S4 medially covered with dense yellowish-brown pubescence brush, other sterna covered with long sparse yellowish-brownish pubescence; outer surface of basitarsi covered with long white hair; coxae, trochanters, femora and tibiae covered with long sparse pale yellowish-white hair, and outer apical margin of hind tibiae covered with short and dense white pubescence.

Female. BL = 9.8 mm (Fig. 35a); head broader than long, HW: HL = 74: 66 (Fig. 35b); gena nearly as broad as eye, GW: EW = 18: 16. Clypeus nearly as broad as long, apical margin nearly smooth, slightly projected medially, without two distinctly lateral tubercles, and with black T-shaped marking (Fig. 35c); mandible with six teeth separated by acute notches, apical one sharp and longest, fifth one and sixth ones combined; omaular carina absent; pronotal lobe rounded anteriorly; scutellum rounded posterolaterally, without tooth, not greatly overhanging metanotum and propodeum (Fig. 35d); propodeum without fovea behind spiracle; fore wing with two submarginal cells, cells nearly equal in length, second recurrent vein meets distal to second submarginal crossvein; arolia absent; T6 without preapical lateral projection (Fig. 35f). Integument black, except yellow on one small marking on vertex near apex of eye (Fig. 35a), lower part of paraocular area (Fig. 35b), lateral sides of clypeus (Fig. 35c), outer surface of mandible (Fig. 35b), anterior and lateral margin of scutum (Fig. 35d), axilla, tegula, posterior lateral part of scutellum (Fig. 35d), maculations of metasomal terga (Fig. 35e), and tibiae; reddish-brown on anterior lower part of scape (Fig. 35b); blackish-brown on coxae; yellowish-brown on trochanters, femora. Fore wing hyaline, veins and stigma dark brownish. T1 with narrowly interrupted medially band, T2–T3 with uninterrupted medially bands, bands with semicircle-shaped area medially, T4–T5 with uninterrupted band, band complete, T6 completely yellow (Fig. 35f). Lower part of gena, mesepisternum covered with long dense white pubescence, lower part of face, vertex, scutum, scutellum, and both lateral sides of metasomal terga covered sparse yellowish-white pubescence (Fig. 35d, Fig. 35e, Fig. 35f); coxae, trochanters, femora and tibiae covered with sparse yellowish hair, and outer apical margin of hind tibiae covered with short and dense white pubescence; outer surface of basitarsi covered with short and dense white pubescence, but inner surface of basitarsi covered with brownish hair; scopa golden.

Type material: Holotype, ♂, China, Xinjiang: Akto Xian, Wuyitake (39º06′N, 75º54′E), 2650 m, 7.VIII.1989, leg. Xue-Zhong ZHANG ; Paratypes: 1 ♂, 1 ♀, China, Xinjiang: Taxkorgan Xian, Kalaqigu (37º42′N, 75º12′E), 3550 m , 11.VIII.1989, leg. Xue-Zhong ZHANG; Xizang, Pulan Xian, Pulan Town, Rengong Village (30º27′N, 81º09′E), 4300 m , 11 ♂, 8 ♀, 11.VIII.2019,, Kejia Village (30º12′N, 81º15′E), 3794 m , 7 ♀, 12.VIII.2019, leg. Qing-Tao WU & Dan ZHANG .

Distribution: China (Xinjiang, Xizang).

Floral association: unknown.

Etymology: The specific name is dedicated to Mr. Xue-Zhong ZHANG for collecting the holotype.