Lamelligomphus choui Chao & Liu 1989 Chao & Liu (1989: 177–179 Chao (1990: 354–356 Hua (2000: 11 Lamelligomphus chaoi Fellowes et al . (2003a: 36 Gomphidae of Guangdong & Hong Kong, China (Odonata: Anisoptera) 2177 Wilson, Keith Duncan Peter Xu, Zaifu Zootaxa 2009 2009-08-06 2177 1 62 3RZ3P choui Chao & Liu 1989 choui Chao & Liu 1989 [151,728,605,631] Insecta Gomphidae Lamelligomphus Animalia Odonata 28 29 Arthropoda subSpecies choui choui   Figs. 14(a–f)     Lamelligomphus choui Chao & Liu 1989:  Chao & Liu (1989: 177–179, type-loc. Anhui);  Chao (1990: 354–356, Anhui);  Hua (2000: 11, Anhui).    Lamelligomphus chaoi nec Zhu 1999:  Fellowes et al. (2003a: 36, Guangdong: Dadingshan& Maoping, Nanling).  Specimens:  5 ♂, Dadingshan, Nanling, Guangdong  30 vi 2000, leg. KW;  5 ♂, Maoping, Nanling, Guangdong,  6 vii 2000, leg. KW.   Description:Labium pale cream, anterior borders black. Labrum black with pair of large yellow lateral spots ( Fig. 14a). Bases of mandibles creamy-yellow, anteclypeus bright yellow, postclypeus entirely black. Several males possess a pair of small yellow lateral spots on the postclypeus but most specimens without these spots. Postfrons black with yellow transverse crest invaded slightly at centre basally and distally; the dorsal yellow crest extending to upper antefrons. Tranverse yellow stripe across postfrons narrowly divided in one malespecimen but uniterrupted in all other males examined and the typealso figured with an undivided stripe. Prominent rounded protrusions beset with bushy black hairs above lateral ocelli ( Fig. 14b). Occiput with a broad hump at centre with very slight depression at each side. Rear of head, below occipital margin, with large yellow spot. Prothorax entirely black save for a pair of minute yellow spots at middle of central lobe and a small lateral yellow spot. Synthorax with an isolated dorsal stripe and antehumeral stripe connected to superior spot ( Fig. 14c). Legs all black. Wings hyaline. Pterostigma blackish-brown. Abdomen mainly black with yellow markings as follows: S1 with round yellow dorsal spot, S2 with narrow rectanguar spot along dorsal carina, S1–2 ventero-laterally yellow but on S2 narrowly invaded with black at basal margin and again from middle of segment towards ventral border; S3–6 with pairs of basal dorsal yellow spots, narrowly conjoined at extreme base; basal half S7 yellow, S8–9 black with small baso-lateral yellow spot, S10 black with a large yellow dorsal spot. All 10 malescollected from Guandong have a prominent yellow area dorsum S10 ( Fig. 14f). Cerci black. Hamuli illustrated in Figs. 14d–e.   Remarks:Unlike  L. formosanusmales the yellow crest stripe extends on to the vertical face of the frons and is not restricted to the dorsum. The Guangdongspecimens conform to the description of topotypical  L. chouifrom Anhui. The blunt, boat-shaped lateral profile of the tip of the superior appendage is characteristic of this species.   Lamelligomphus choui tienfuensis Chao 1995was described from a single male from Sichuan. Chao (1995)considered the presence of semi-circular prominences above the lateral ocelli and depressed areas at each side of the occiput indicated that this taxon belonged to  L. choui. According to Chao (1995)its colouration differs markedly from the nominate species by the following: (i) labrum predominantly yellow, (ii) crest of synthorax yellow and joined to yellow collar stripe, antehumeral stripe absent, (iv) three yellow spots on metepisternum (v) most abdominal segments with a basal ring. Chao (1995)stated there were no distinct structural differences when compared with the nominate subspecies but figured the posterior hamulus without a markedly curved tip ( Fig. 17t), which is present in nominate  choui( Fig. 14e). The shape of the hamuli of  L. choui tienfuensisare identical to those of  Lamelligomphus ringens( Needham 1930)( Fig. 17o–p) and the overall body pattern and colouration is very similar. There is a strong possibility that  L. choui tienfuensisis a junior synonym of  L. ringens.   Distribution: China( Anhui& Guangdong). [401,1360,781,804] Dadingshan & Maoping Guangdong 28 29 1 Guangdong [316,1108,852,878] 2000-06-30 Nanling Dadingshan 28 29 5 5 Guangdong 2000-07-06 Nanling Maoping 28 29 5 5 Guangdong