Gomphus pacificus Chao 1953 Asahina (1966: 112–113 Matsuki (1978: 142 Lieftinck et al. (1984: 33 Sui & Sun (1984: 43–44 Zhu (1989: 47 Asiagomphus pacificus (Chao 1953) Matsuki & Lien (1988: 33 Chao (1990: 97–99 Zhang (1999: 223–224 Hua (2000: 10 Fellowes et al. (2003a: 36 Wilson (2005: 131–134 Asiagomphus sp. Wilson (1999: 35–36 Asiagomphus hainanensis Chan et al. (2004a: 39 Gomphidae of Guangdong & Hong Kong, China (Odonata: Anisoptera) 2177 Wilson, Keith Duncan Peter Xu, Zaifu Zootaxa 2009 2009-08-06 2177 1 62 H9SQ Chao 1953 Chao 1953 [151,571,151,177] Insecta Gomphidae Asiagomphus Animalia Odonata 12 13 Arthropoda species pacificus   Figs. 2(a–d)     Gomphus pacificusChao 1953: Chao (1953: 410–413, figs 37–42, type-loc. Fujian);  Asahina (1966: 112–113, figs 17– 21, Fujian, Taiwan);  Matsuki (1978: 142[list]);  Lieftinck et al.(1984: 33, Fujian, Taiwan);  Sui & Sun (1984: 43–44, figs 33a–d, Fujian& Taiwan);  Zhu (1989: 47, Zhejiang).    Asiagomphus pacificus(Chao 1953):  Matsuki & Lien (1988: 33, Taiwan);  Chao (1990: 97–99, figs 1–13, Fujian, Taiwan& Zhejiang);  Zhang (1999: 223–224, figs 26.47a–f, Fujian, Taiwan& Zhejiang);  Hua (2000: 10, Fujian, Henan, Hunan, Taiwan& Zhejiang);  Fellowes et al.(2003a: 36, Guangdong: Nanling);  Wilson (2005: 131–134, figs 14a–d, Guangxi).    Asiagomphussp.:  Wilson (1999: 35–36, figs 19–20, Guangdong: Dinghushan).    Asiagomphus hainanensis(not of Chao 1953a):  Chan et al.(2004a: 39, Guangdong: Dachouding).  Specimens:  12 ♂, Dadingshan, Nanling,  30 vi 2000, coll. KW;  1 ♂, Dadingshan, Nanling,  1 vii 2000, coll. KW;  2 ♂, Longtanjiao, Nanling,  2 vii 2000, coll. KW;  1 ♂, Longtanjiao, Nanling,  3 vii 2000, coll. KW;  1 ♂, Longtanjiao, Nanling,  3 vii 2000, coll. KW;  2 ♂, Chengjia, Nanling,  5 vii 2000, coll. KW;  2 ♀, Maoping, Nanling,  6 vii 2000, coll. KW;  1 ♂, Dachouding,  18 iv 2001, leg. GR;  1 ♂, 1 ♀( Nos.20050 & 20051), Dinghushan,  6 iv 2002, coll. ZX;  3 ♂( Nos.20320, 20304, 20191), Liuqihe,  14 iv 2002, coll. ZX;  1 ♂, Ehuangzhang,  1 v 2002, coll. ZX;  3 ♂( No.21570), Xiangtoushan,  19 v 2002, coll. ZX;  3 ♂, 2 ♀( No.22177), Chebaling,  25–26 v 2002, coll. ZX;  1 ♂, Liuqihe,  24–28 vi 2002, coll. ZX;  1 ♀( No.24967), Nankunshan,  12 v 2004, coll. ZX;  1 ♂, Luofushan,  8 viii 2004, coll. KW;  1 ♂( No.21346), Baiyung, coll. ZX.   Remarks:  Asiagomphus pacificusis significantly larger and slightly bulkier species than  A. hainanensisChaoand its males feature a uniformly straight occipital margin without any small spines. Its antehumeral stripe may be complete or interrupted in the middle as illustrated in Fig. 2band its labrum is entirely black ( Fig. 2a). The female occipital margin may also be uniformly straight or feature a very small v-shaped notch in the centre which is more noticeable when viewed dorsally ( Figs. 2c–d).  Asiagomphus hainanensishas a pair of yellow baso-lateral spots on the labrum and the male has a slightly curved occipital margin beset with small spines ( Fig. 2e) and the upper metakatepisternum is yellow ( Fig. 2f). Topotypical female  A. hainanensis, as pointed out by Wilson & Reels (2001), has an occiptal margin which is arched, beset with small spines and has a prominent central notch ( Figs. 2g–h).   Distribution: China( Fujian, Guangdong, Guangxi, Henan, Hunan, Taiwan& Zhejiang). [302,903,586,612] 2000-06-30 Dadingshan Nanling 12 13 12 12 2000-07-01 Dadingshan Nanling 12 13 1 1 [215,787,625,651] 2000-07-02 Longtanjiao Nanling 12 13 2 2 [799,1371,625,651] 2000-07-03 Longtanjiao Nanling 12 13 1 1 2000-07-03 Longtanjiao Nanling 12 13 1 1 [692,1245,663,690] 2000-07-05 Chengjia Nanling 12 13 2 2 2000-07-06 Maoping Nanling 12 13 2 2 [539,1016,702,728] 2001-04-18 Dachouding 12 13 1 1 2002-04-06 Dinghushan Nos. 12 13 2 1 1 [573,1367,741,767] 2002-04-14 Liuqihe Nos. 12 13 3 3 2002-05-01 Ehuangzhang 12 13 1 1 [581,1248,780,806] 2002-05-19 No. 12 13 3 3 2002-05-25 2002-05-26 2002-05-25 No. 12 13 5 2 3 [716,1204,818,844] 2002-06-24 2002-06-28 2002-06-24 Liuqihe 12 13 1 1 2004-05-12 No. 12 13 1 1 [554,999,857,883] 2004-08-08 Luofushan 12 13 1 1 [1011,1432,857,883] Baiyung No. 12 13 1 1