Colletes tibeticus Kuhlmann, 2002

Ferrari, Rafael R., Niu, Ze-Qing, Kuhlmann, Michael, Zhang, Dan & Zhu, Chao- Dong, 2021, The cellophane bees of Colletes Latreille (Hymenoptera: Colletidae) from Xizang (Tibet), China, Zootaxa 5022 (1), pp. 1-72 : 32-34

Colletes tibeticus Kuhlmann, 2002

( Figs 18A–F , 19A , 40C , 43C , 45D , 46B, 46D)

Colletes tibeticus Kuhlmann, 2002: 1168 (holotype ♂: China, Xizang, Khangmar [ZMB]).

Colletes tibeticus ; Niu et al. 2013b: 109 ; Ascher & Pickering 2021.

Diagnosis. The following set of features is sufficient to diagnose females of C. tibeticus among the Tibetan Colletes : clypeus longer than broad, mesoscutum covered with pale-orange pubescence and T2 without basal band. Males are diagnosable by the combination of malar area 1.25× as long as basal width of mandible, face and mesosomal dorsum with pale-yellow pubescence and S7 with a largely-glabrous subtriangular apex. Colletes tibeticus is most similar to C. paratibeticus , but in both sexes of the latter the paraocular area has a well-defined longitudinal band of black hairs (paraocular area without black hairs in both sexes of the former). Females of the two species can be further differentiated by the T1 with a complete apical band in C. tibeticus (T1 with a medially interrupted apical band in C. paratibeticus ) and the males by the hind basitarsus 4.5× as long as broad in C. tibeticus (hind basitarsus 3.75× as long as broad in C. paratibeticus ).

Material examined. Published records — CHINA, Xizang: Markam Xian , 29.60 98.50, 3800 m, 26.vi.1976, YH Hang, 2 ♂ . Nyalam Xian , 28.10 85.90, 4400 m, 18.vi.1966, SY Wang, 1 ♂ ; 22.vi.1966, SY Wang, 1 ♂; 27.v.1974, SY Wang, 1 ♂. Yadong Xian , 27.40 88.90, 2800 m, 7.vi.1961, LY Wang, 1 ♂ .

New records — CHINA, Qinghai: Dulan County, Chahanwusu , 36.0889 98.2112, 3700 m, 15.vii.2017, D Zhang & QT Wu, 7 ♂ . Dulan County, Road G 109 km 2408, 36.1151 98.1873, 3465 m, 13.vii.2017, D Zhang & QT Wu, 4 ♂ . Dulan County, Xiariha, Xiatala Town , 36.4065 90.1028, 3089 m, 14.vii.2017, D Zhang & QT Wu, 5 ♂ .

Xizang: Ali, Pulan, Chide , 30.2954 81.1427, 4100 m, 19.vii.2020, QT Wu & D Zhang, 2 ♀ 4 ♂ . Ali, Pulan, Pulan , 30.2001 81.2531, 3837 m, 17.vii.2020, QT Wu & D Zhang, 1 ♀ . Jilong, Peiku Lake , 28.7554 85.5865, 4566 m, 4.viii.2019, D Zhang & QT Wu, 1 ♀ . Kangma, Dalong Village , 28.6754 89.6616, 4200 m, 4.vii.2018, QT Wu, 1 ♂ . Nielamu, Jlanggang Town , 28.2359 85.5865, 3954 m, 4.viii.2019, D Zhang & QT Wu, 2 ♀ . Nielamu, Rujia Village , 28.3618 86.0734, 4286 m, 15.vii.2018, QT Wu, 2 ♀ . Pulan County, Pulan Town, Chide , 30.2952 81.1423, 3943 m, 13.viii.2019, D Zhang & QT Wu, 1 ♀ 1 ♂ . Rembu, Qiewa, Qieda , 29.3064 89.7699, 3746 m, 24.vii.2019, D Zhang & QT Wu, 1 ♀ .

Distribution. Western China (Xizang) and Central Nepal.

DNA barcode. Available (2 ♂). See also Fig. 1 and Table 1.

Floral hosts. Unknown.

Remarks. Colletes tibeticus is likely sister to the new species described herein as C. splendidus sp. nov. In fact, the two species along with C. paratibeticus form a well-delimited subgroup within the C. clypearis group, in which the male S7 is broadly convex basally and abruptly narrowed towards a subtriangular, poorly-sclerotized apex (see Figs 12F , 16F, 18F).

Figures

FIGURE 1. Neighbor-joining tree based on the barcode data of the sequenced specimens of Colletes. Further information on the voucher codes shown on the tree can be found in Table 1.

FIGURE 12. Colletes paratibeticus Kuhlmann, 2002. Female: (A) habitus, lateral view; (C) face, frontal view. Male: (B) habitus, lateral view; (D) face, frontal view; (E) genital capsule, lateral view; (F) S7, ventral view. Scale bars: (A–D) 2 mm; (E, F) 1 mm.

FIGURE 18. Colletes tibeticus Kuhlmann, 2002. Female: (A) habitus, lateral view; (C) face, frontal view. Male: (B) habitus, lateral view; (D) face, frontal view; (E) genital capsule, lateral view; (F) S7, ventral view. Scale bars: (A–D) 2 mm; (E, F) 1

FIGURE 19. Confirmed geographic records of the Colletes species found in Xizang based on the examined material. (A) C. tibeticus; (B) C. xizangensis; (C) C. xuezhongi; (D) C. tuberculatus.

FIGURE 40. Oblique view of head: (A) lower face with mostly short hairs in the male Colletes sichuanensis; (B) lower face with mostly long hairs in the male C. sidemii. Lateroventral view of metasoma: (C) S5 with erect dense setae medially in the male C. tibeticus; (D) S5 with subappressed sparse setae medially in the male C. floralis. Scale bars: 1 mm.

FIGURE 43. Head in profile: (A) paraocular area with only pale-yellow hairs in the female Colletes floralis; (B) paraocular area with mostly pale-yellow pubescence and a line of black hairs in the female C. harreri. Dorsal view of hind leg: (C) basitarsus with dark long setae posteriorly in the female C. sanctus; (D) basitarsus with off-white long setae posteriorly in the female C. tibeticus. Scale bars: 1 mm.

FIGURE 45. Dorsal view of metasoma: (A) T1 covered with dense tomentum anteriorly in the female Colletes annejohnae; (B) T1 without tomentum anteriorly in the female C. tuberculatus. Lateral view of metasoma: (C) T1 with subappressed short hairs basolaterally in the female C. hedini; (D) T1 with erect long hairs basolaterally in the female C. tibeticus. Scale bars: 1 mm.