Colletes tuberculatus Morawitz, 1893

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 : 36

Colletes tuberculatus Morawitz, 1893

( Figs 19D , 22A–F , 38D , 39A , 44D , 45B )

Colletes tuberculatus Morawitz, 1893: 80 (lectotype ♂ designated by Proshchalykin & Kuhlmann 2015a: 550 : Tajikistan, Yagnob River, Varsaut [ZISP]).

Colletes tuberculatus ; Kuhlmann 2000: 175; Ascher & Pickering 2021.

Colletes tuberculatus anatolicus Noskiewicz, 1959 1959: 513 (holotype ♀: Turkey, Niðde [possibly at ZMTAU]).

Colletes tuberculatus siculus Noskiewicz, 1959: 511 (holotype ♀: Italy, Sicilia, Mount Etna [possibly at ZMTAU]).

Colletes daviesanus tuberculatus ; Warncke 1978: 349.

Diagnosis. Females of C. tuberculatus can be diagnosed through the following set of characters: bees relatively small (HW 2.5–2.8 mm), malar area only 0.4× as long as basal width of mandible and hind basitarsus with pale setae. Males of C. tuberculatus have the shortest hind basitarsus in relative terms (2.8× as long as broad) among the Tibetan Colletes , which makes them readily recognizable (hind basitarsus is at least 3.5× as long as broad in males of all other species). Colletes tuberculatus most closely resembles C. xuechengensis , but the former is considerably smaller (8.0–9.0 mm (♀), 6.0–7.0 mm (♂ )) than the latter (9.0–10.0 mm (♀), 7.0–8.0 mm (♂ )) and has the wings with subhyaline membranes (wing membrane yellowish in both sexes of C. xuechengensis ).

Material examined. Published records — CHINA, Qinghai: Yushu, Batang , 32.85 97.03, 3900 m, 25.vii.1964, SY Wang, 3 ♂ .

New records — CHINA, Qinghai: Geermu, Wuji Dragon Palace , 35.8883 94.3685, 3707 m, 19.vii.2017, D Zhang & QT Wu, 1 ♂ . Xizang: Ali, Ritu, Duoma , 33.6661 80.4331, 4490 m, 23.vii.2020, QT Wu & D Zhang, 1 ♀ . Gar County, Road G 219 km 1053, 4557 m, 27.vii.2018, QT Wu, 1 ♂ . Zhada, Xiangzi Town, Chongdui , 31.7704 79.5117, 4023 m, 15.viii.2019, D Zhang & QT Wu, 18 ♀ 12 ♂ .

Distribution. Widespread in the Palaearctic region, ranging from as far west as Sicily ( Italy) east to western China (Qinghai).

DNA barcode. Available (2 ♀ and 3 ♂). See also Fig. 1 and Table 1.

Floral hosts. Unknown.

Remarks. Colletes tuberculatus is herein recorded from Xizang for the first time.

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 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 22. Colletes tuberculatus Morawitz, 1893. 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 38. Head in profile: (A) paraocular area without black hairs in the male Colletes hedini; (B) paraocular area with black hairs in the male C. linzhiensis. Ventral view of metasoma: (C) S5 with a patch of inwardly-curved long hairs in the male C.

FIGURE 39. Lateral view of wings: (A) wing venation dark-brown in the male Colletes tuberculatus; (B) wing venation palebrown in the male C. fulvicornis. Dorsal view of metasoma: (C) T1 densely punctate medially in the male C. packeri; (D) T1 sparsely punctate medially in the male C. sichuanensis. Scale bars: 1 mm.

FIGURE 44. Head in profile: (A) paraocular area with short setae in the female Colletes sichuanensis; (B) paraocular area with

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.