Davidius fruhstorferi Martin 1904

Wilson, Keith Duncan Peter & Xu, Zaifu, 2009, Gomphidae of Guangdong & Hong Kong, China (Odonata: Anisoptera) 2177, Zootaxa 2177, pp. 1-62 : 13-15

Davidius fruhstorferi Martin 1904

Figs. 3 (a–f)

Davidius fruhstorferi Martin 1904 : Martin (1904: 215, type-loc. Tonkin); Chao (1995: 17–19, 32–35, figs 2, 10–11, 16,

30, 34, 36, 41, 46–47, synonymy with D. guizhouensis , D. junior , D. serenus , D. simaoensis , Fujian, Guangxi,

Henan , Jiangxi , Sichuan, Vietnam, Yunnan); Wilson (2005: 133, 167, fig. 37, Guangxi, photo ♂ Guangdong) ;

Hämäläinen & Pinratana (1999: 78, northwest Thailand). Davidius trox nec Needham 1931: Asahina (1990: 14–15, figs 32–34, ♀, northwest Thailand). Gomphus junior Navás 1936 : Navás (1936: 38–39, type –loc. Jiangxi). Davidius serenus Needham 1941 : Needham (1941: 154, type-loc. Jiangxi); Hua (2000: 11, Jiangxi). Davidius fruhstorferi junior ( Navás 1936) : Chao (1954: 244–247, figs 370–381, in part); Sui & Sun (1984: 91–92, figs

60a–d, in part Fujian, Jiangsu, Sichuan); Chao (1990: 274–278, figs 1–14, in part, illustrations of ♀ postgenital plate are D. truncus ); Zhang (1999: 228–229, figs 24.53a–j, Fujian, Guangxi, Jiangxi, Jiangsu, Sichuan & Zhejiang); Hua

(2000: 10, Fujian, Guangdong, Guangxi, Guizhou, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan & Zhejiang);

Fellowes et al. (2003a: 36, Guangdong: Nanling). Davidius fruhstorferi serenus Needham 1941 : Asahina (1956: 222, in part Zhejiang). Davidius fruhstorferi guizhouensis Chao & Liu in Chao 1990: Chao & Liu (1990: 278–279, figs 1–10, type-loc.

Guizhou); Hua (2000: 11, Guizhou); Chan et al. (2004a: 39, Guangdong: Sanyue). Davidius fruhstorferi simaoensis Zhou in Zhou & Wu 1992: Zhou in Zhou & Wu (1992: 399–400, figs 31–33, type-loc. Yunnan).

Specimens: 1 ♂, Mangshan , Shikengkong (Babaoshan), 26 vi 2000, coll. KW ; 8 ♂, 4 ♀, Xiaohuangshan , Shikengkong (Babaoshan), 27 vi 2000, coll. KW ; 3 ♂, 1 ♀, Pengshan (Dadingshan), 1 vii 2000, coll. KW ; 1 ♂, Longtanjiao , 3 vii 2000, coll. KW ; 2 ♂, 21 iv 2001, Sanyue, leg. GR; 1 ♀ ( No. 20205), 13 iv 2002, Liuqihe, coll. ZX ; 1 ♂ ( No. 20861), Guozhou, 5 v 2002, coll. ZX .

Remarks: The only other species of Davidius known from S China is D. truncus Chao 1995 , from Fujian, Jiangxi and Zhejiang. According to Chao (1995) the markings of the two species are similar but they can be separated by the shape of the penile organ. In D. truncus ( Fig. 3g) the vescicle has an angulated rim not present in D. fruhstorferi , the basal portion of the apical segment is globular not elongate, and the apex of the trumpet-like apical segment is heart-shaped as opposed to round in D. fruhstorferi ( Fig. 3e). The postgenital plates are distinctive; D. fruhstorferi with long vulvar scales ( Fig. 3f) in contrast to D. truncus which has short, truncated vulvar scales ( Fig. 3h).

Distribution: China (Fujian, Guangdong, Guangxi, Guizhou, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan, Yunnan, Zhejiang), Thailand and Vietnam.