1	Males	2
–	Females	18
2	Embolus long, extending beyond anterior edge of median apophysis (Figs 8B, 15B, 27A, 31B, 35B)	3
–	Embolus short, not extending beyond anterior edge of median apophysis (Figs 10B, 21B, 23B)	13
3	Embolus filiform, flexible (Figs 27A, 35B, 37A, B)	4
–	Embolus spiraled, stiff (Figs 8B, 15B, 31B)	8
4	Embolus coiled (Figs 27A, 35B)	5
–	Embolus not coiled (Fig. 37A; Wunderlich 1995: fig. 19; Miller et al. 2014: fig. 4)	6
5	Embolus coiled into more than two loops (Fig. 27A)	C. shiluensis
–	Embolus coiled into fewer than two loops (Fig. 35B)	C. yamu
6	Embolus filiform, without basal nodule	7
–	Embolus straight, pointed, with a basal nodule (Fig. 37A, B)	C. yinzhi
7	Median apophysis bilobate (Wunderlich 1995: fig 18)	C. haeneli
–	Median apophysis trilobate (Miller et al. 2014: fig. 4)	C. danaugirangensis
8	Embolus twisted anticlockwise (Figs 8B, 15B, 25B)	9
–	Embolus twisted clockwise (Fig. 31B)	C. si sp. nov.
9	Cymbial tooth large, hook shaped (Figs 8B, 25B)	10
–	Cymbial tooth small, tooth-like (Figs 15B, 17A, 29A)	11
10	Embolic base narrow (Fig. 8B)….	C. ertou
–	Embolic base wide (Fig. 25B)	C. rostriformis sp. nov.
11	Embolic tip blunt, stiff (Fig. 17B)	C. nasalis sp. nov.
–	Embolic tip sharp, narrow (Figs 15A, B, 29A, B)	12
12	Cymbial tooth sharp, median apophysis lacks a hook (Fig. 29A)	C. shunani sp. nov.
–	Cymbial tooth blunt, median apophysis with a hook (Fig. 15A)	C. nantou sp. nov.
13	Embolic tip blunt (Figs 10B, 19B, 23B)	14
–	Embolic tip pointed (Figs 2B, 13B, 21B)	16
14	Embolic base wide; cymbial tooth spur-like (Figs 19A, B, 23A, B)	15
–	Embolic base narrow; cymbial tooth spine-like (Fig. 10A, B)	C. gucheng sp. nov.
15	Median apophysis subquadrate, with a hooked process (Fig. 19A, B)	C. pianma
–	Median apophysis subtriangular, with a truncated process (Fig. 23A, B)	C. quanqu
16	Embolic tip narrow; median apophysis with a process (Figs 2B, 21B)	17
–	Embolic tip wide; median apophysis lacks a process (Fig. 13A, B)	C. mengla sp. nov.
17	Embolic apex flat (Fig. 2B)	C. baihua sp. nov.
–	Embolic apex sloped (Fig. 21A, B)	C. quadriventris
18	Scape long, distinctly protrudes from epigastric furrow (Figs 2D, 6D, 10D)	19
–	Scape short or absent (Figs 4D, 5D, 27C, 33D)	27
19	Copulatory ducts merged into a tubular atrium medially (Figs 11F, 35G)	20
–	Copulatory duct junction near copulatory opening (Figs 2F, 8F, 10F)	22
20	Copulatory atrium short, does not extend beyond spermathecal anterior margin	21
–	Copulatory atrium long, extends beyond spermathecal anterior margin (Fig. 31F)	C. si sp. nov.
21	Copulatory ducts do not overlap atrium (Fig. 11F, G)	C. gudu
–	Copulatory ducts overlap part of atrium (Fig. 35F, G)	C. yamu
22	Copulatory ducts form a V-shape before junction (Figs 8F, 37F)	23
–	Copulatory ducts nearly parallel at center before junction (Figs 2F, 21F)	24
23	Copulatory ducts make two sharp turns (Fig. 37F)	C. yinzhi
–	Copulatory ducts make four sharp turns (Fig. 8F)	C. ertou
24	Copulatory duct connects to spermathecal dorsum (Figs 6G, 10G)	25
–	Copulatory duct connects to posterior margin of spermathecae (Fig. 2G, 21G)	26
25	Copulatory ducts twisted twice in center of vulva (Fig. 10F, G)	C. gucheng sp. nov.
–	Copulatory ducts twisted once in center of vulva (Fig. 6F, G)	C. dongnai sp. nov.
26	Copulatory ducts make four turns (Fig. 2F, G)	C. baihua sp. nov.
–	Copulatory ducts make six turns (Fig. 21F, G)	C. quadriventris
27	Scape absent (Figs 4D, 17D, 27C, 33D)	28
–	Scape present (Figs 3E, 19E, 29E, 32E, Miller et al. 2014: fig. 2)	33
28	Copulatory duct loops 3 ×, connects anterolaterally to spermathecae (Fig. 27D, E)	C. shiluensis
–	Vulva not as above	29
29	Spermathecae separated by at least their diameter (Figs 5E, 33E)	30
–	Spermathecae separated by less than their diameter (Figs 4F, 15F, 17E)	31
30	Copulatory ducts vertically linked to copulatory opening (Fig. 33E)	C. xichou sp. nov.
–	Copulatory ducts diagonally linked to copulatory opening (Fig. 5E)	C. changyan sp. nov.
31	Copulatory ducts vertical and parallel in center of vulva (Fig. 15F)	C. nantou sp. nov.
–	Copulatory ducts not as above	32
32	Copulatory ducts twisted 2× (Fig. 17E, F)	C. nasalis sp. nov.
–	Copulatory ducts twisted 4× (Fig. 4F, G)	C. bicorniventris
33	Spermathecae separated by less than 1.5× their diameter	34
–	Spermathecae separated by more than 3× their diameter (Miller et al. 2014: fig. 2)	C. danaugirangensis
34	Copulatory ducts nearly vertically linked to copulatory opening (Figs 13F, 29F)	35
–	Copulatory ducts diagonally or horizontally linked to copulatory opening	37
35	Proximal part of copulatory ducts not confluent (Fig. 29F)	C. shunani sp. nov.
–	Copulatory ducts confluent before reaching copulatory opening (Figs 13F, 25F)	36
36	Spermathecae separated by their diameter (Fig. 25F)	C. mengla sp. nov.
–	Spermathecae spacing does not exceed their diameter (Fig. 32G)	C. rostriformis sp. nov.
37	Copulatory ducts horizontally linked to copulatory opening	38
–	Copulatory ducts diagonally linked to copulatory opening	39
38	Copulatory duct has two inflection points in middle of vulva (Fig. 19F)	C. pianma
–	Copulatory duct has one inflection point in middle of vulva (Fig. 3F)	C. bangbie sp. nov.
39	Proximal copulatory ducts curved (Fig. 23D)	C. quanqu
–	Proximal copulatory ducts straight (Fig. 32F)	C. thamphra sp. nov.