Colletes succinctus

Niu, Ze-Qing, Kuhlmann, Michael & Zhu, Chao-Dong, 2013, A review of the Colletes succinctus - group (Hymenoptera: Colletidae) from China with redescription of the male of C. gigas, Zootaxa 3626 (1), pp. 173-187 : 174

Key to the species of the Colletes succinctus -group known from China

1. Female (Flagellum 10 segmented)........................................................................ 2

- Male (Flagellum 11 segmented).......................................................................... 5

2. Body large and robust, body length 17–18 mm ( Fig. 16 ), basal part of T1 with large lateral hair patches ( Fig. 19 )... C. gigas

- Body small and slender, body length less than 15 mm ( Figs. 1 , 9 ), basal part of T1 with small lateral hair patches ( Figs. 3 , 11 ).................................................................................................... 3

3. Malar area distinctly longer than diameter of antennal flagellum..................................... C. taiwanensis

- Malar area nearly as long as diameter of antennal flagellum.................................................... 4

4. Apical hair band of T2 medially broad, punctation on disc of T1 dense ( Fig. 3 )........................... C. arsenjevi

- Apical hair band of T2 medially narrow, punctation of disc of T1 more dispersed ( Fig. 11 )................... C. collaris

5. Body large and robust, body length 13–17 mm ( Fig. 19 ), T1–5 with broad apical hair bands ( Fig. 22 )............. C. gigas

- Body small, body length less than 12 mm ( Figs. 4 , 12 , 19 ), T1–5 with narrow apical hair bands ( Figs. 5 , 15 )............. 6

6. Apical lobes of S7 large, sickle-shaped ( Fig. 7 )..................................................... C. arsenjevi

- Apical lobes of S7 small, oval-shaped ( Fig. 13 )............................................................. 7

7. Apical margin of S7 convex.................................................................. C. taiwanensis

- Apical margin of S7 concave ( Fig.13 )............................................................. C. collaris

Figures

FIGURES 16 – 23. Colletes gigas Cockerell, 1918. 16, Female body in lateral view; 17, Female head in frontal view; 18, Female T 1 – 2 in dorsal view, showing the punctures on disc of T 1 and the pilosity on T 1 – 2; 19, Male body in lateral view; 20, Male head in frontal view; 21, Male S 7 in ventral view, showing the apical lobes; 22, Male T 1 – 2 in dorsal view, showing the punctures on disc of T 1 and the pilosity on T 1 – 2; 23, Male genitalia in lateral view, showing the gonostylus. Scale bar: 1 mm.

FIGURES 1 – 8. Colletes arsenjevi Kuhlmann, 2006. 1, Female body in lateral view; 2, Female head in frontal view; 3, Female T 1 – 2 in dorsal view, showing the punctures on disc of T 1 and the pilosity on T 1 – 2; 4, Male body in lateral view; 5, Male T 1 – 2 in dorsal view, showing the punctures on disc of T 1 and the pilosity on T 1 – 2; 6, Male genitalia in lateral view, showing the gonostylus; 7, Male S 7 in ventral view, showing the apical lobes; 8, Male genitalia in lateral view, showing variation of the gonostylus. Scale bar: 1 mm.

FIGURES 9 – 15. Colletes collaris Dours, 1872. 9, Female body in lateral view; 10, Female head in frontal view; 11, Female T 1 – 2 in dorsal view, showing the punctures on disc of T 1 and the pilosity on T 1 – 2; 12, Male body in lateral view; 13, Male S 7 in ventral view, showing the apical lobes; 14, Male genitalia in lateral view, showing the gonostylus; 15, Male T 1 – 2 in dorsal view, showing the punctures on disc of T 1 and the pilosity on T 1 – 2. Scale bar: 1 mm.