Colletes yanruae Niu, Zhu & Kuhlmann, 2013

Niu, Zeqing, Ren, Zongxin & Zhu, Chaodong, 2016, Discovery of the male of Colletes yanruae from Yunnan, China (Hymenoptera: Apoidea: Colletidae), Zoological Systematics 41 (3), pp. 286-293 : 290-293

Colletes yanruae Niu, Zhu & Kuhlmann, 2013 ( Figs 2–11 )

Colletes yanruae Niu, Zhu & Kuhlmann, In : Niu et al., 2013b: 114 (female).

Diagnosis. Like the female, the male C. yanruae has narrow apical tergal hair bands ( Figs 6–7 ) and much long hair on the scutum ( Fig. 5 ). The male has a very large and broad S7 ( Figs 10–11 ) that is similar in shape to that of C. reinigi Noskiewicz , C. luzhouensis Kuhlmann and C. linzhiensis Niu, Zhu & Kuhlmann. But C. yanruae differs from C. reinigi by the finer and denser punctation of terga, the rounded outer apical corners of S7 (shallowly incised in C. reinigi ) and the rounded gonostylus (pointed in C. reinigi ), and from C. linzhiensis by the distinctly narrower apical tergal hair bands and shorter malar area ( Fig. 4 ). In C. yanruae , the gonostylus is broader than long, while it is narrower at its base and, thus, longer than broad in C. luzhouensis ( Fig. 9 ). The males of both species are otherwise very similar, with only subtle differences in tergal punctation (punctures of T2 only slightly smaller than on T 1 in C. luzhouensis while in C. yanruae punctures of T2 are about half the diameter of those on T1). The male of C. brumalis Noskiewicz is unknown but likely has distinctly broader apical tergal hair bands than C. yanruae , for the female of C. brumalis Noskiewicz with broader apical tergal hair bands than C. yanruae .

Description. Male, BL= 9.5 mm ( Fig. 2 ); head broader than long ( Fig. 3 ), HW: HL= 53: 44; gena slightly narrower than eye in lateral view, GW: EW = 9: 12 ( Fig. 4 ); width of metasoma as broad as that between tegulae, MtW: TW = 52: 52. Clypeus slightly convex, median part with fine oblique spine-shaped punctation ( Fig. 3 ); antenna short, extending to the middle of scutellum, first flagellomere slightly longer than broad, 0.7 time as long as second flagellomere, flagellomeres 2–11 longer than broad, nearly 1.5 times as long as broad and nearly equal to each other in length; malar area medially shorter than width of mandible base, about 1/2 long as width of mandible base; facial fovea shallow and narrow, only half as wide as antennal flagellum; vertex behind eye rounded; propodeum laterally covered with sparse long erect hairs, integumental sculpture completely visible; disc of scutum shiny, with dense punctation, i = 0.5–1.5d ( Fig. 5 ); metasomal terga with apical hair bands, the band on T1 slightly narrower medially, that on T2–T5 nearly 1/6 width as that of the related exposed terga ( Fig. 6 ); posterior margin of T1 translucent and orange, punctation on disc of T1 round and dense, i = 0.2–0.5d ( Fig. 7 ); sloping anterior and lateral anterior parts of T1 covered with erect long plumose hairs, and disc of T1 also with erect long sparse plumose hairs ( Fig. 7 ); apical lobe of S7 large and broad, outer apical corner rounded, but with inside concave below the apical corner ( Fig. 10 ); genitalia as showing in Fig. 8 and Fig. 9 , gonostylus short and broad at its base. Antennal flagellum ventrally black; all legs black. Face covered with dense long paler white plumose hairs, intermixed with black plumose hairs; gena, scutellum and mesepisternum covered with long paler white plumose hairs; scutum covered with dense long paler white plumose hairs, intermixed with black plumose hairs ( Figs 4–5 ).

Material examined. China, Yunnan, Zhaotong City , Qiaojia County, Yaoshan Town (27º12′N, 103º06′E), 7♀ 1♂ (from Cotoneaster subadpressus ), 1♀ (from Berberis sp. ), 7.V.2015, leg. Zongxin Ren, Zhibin Tao.

Type Materials. Holotype. ♀, China, Yunnan, Lijiang, Yulong Shan (100º18′E, 27º06′N; elev. 2850 m), 19.VII. 1984, leg. Changfang Li ; Paratypes. 3♀, China, Yunnan, Lijiang, Yulong Shan (100º18′E, 27º06′N; elev. 2850 m), 17.VII. 1984, leg. Changfang Li ; 2♀, China, Yunnan, Lijiang, Baishui (103º54′E, 24º30′N; elev. 3200 m), 17.VII.1984, leg. Jianguo Fan.

Distribution. China (Yunnan).

Floral associations. Berberis sp. (Berberidaceae) , Cotoneaster subadpressus (Rosaceae) .

Funding This work was supported mainly by the National Specific Research Funds for Public Benefit Department (Agriculture) (201303108) to Zeqing Niu, the NSFC Program J1211002, and the grant (Y229YX5105) from Key Laboratory of Zoological Systematics and Evolution, Chinese Academy of Sciences.

Acknowledgements The authors thank Dr. Michael Khulmann, who collaborated with us in studying Chinese Colletes . The authors sincerely thank Dr. Victor H. Gonzalez, Prof. Yanru Wu, Dr. Yanzhou Zhang, Dr. Fuqiang Chen and two anonymous reviewers for their comments and suggestions on earlier drafts of the manuscript, and are grateful to Dr. Douglas Chesters for revising the English language in parts of the manuscript. The authors also wish to thank Ms. Qingyan Dai, who helped to sequence bee samples, and to thank Ms. Huanxi Cao, who helped to re-construct maximum parsimony trees.

Figures

Figures 2–7. Colletes yanruae Niu, Zhu & Kuhlmann, 2013, male. 2. Body, lateral view. 3. Head, frontal view. 4. Head, lateral view. 5. Mesonotum, dorsal view. 6. Metasoma, dorsal view. 7. T1–2, dorsal view. Scale bars=1 mm.

Figures 8–11. Colletes yanruae Niu, Zhu & Kuhlmann, 2013, Male. 8. Genitalia, dorsal view. 9. Genitalia, lateral view. 10. S7, dorsal view. 11. S7, ventral view. Scale bars=0.5mm.