taxonID	type	description	language	source
7EDF281CE53F53A89C9E7B1BB926B1A8.taxon	description	Figs 3 A, 4 A, 5 A	en	Chen, Zhong-Guang, Dai, Yu-Ting, Ouyang, Shan, Huang, Xiao-Chen, Wu, Xiao-Ping (2023): Unveiling the identity of Diaurora Cockerell, 1903 (Bivalvia, Unionidae): morphology, molecular phylogenetics, and the description of a new species. ZooKeys 1173: 131-144, DOI: http://dx.doi.org/10.3897/zookeys.1173.106148, URL: http://dx.doi.org/10.3897/zookeys.1173.106148
7EDF281CE53F53A89C9E7B1BB926B1A8.taxon	materials_examined	Museum material. Holotype: USNM 472411, Ning-kouo hien [宁国县], Kien-te hien [建德县], China. NZMC FM 00732, Yuanjiang River [沅江], Hunan Province [湖南省], China. SMF 24000 a-b, Yuetanchiao [玉潭桥], Hunan [湖南], China, 28 ° 15 ′ 7 ″ N, 112 ° 33 ′ 45 ″ E.	en	Chen, Zhong-Guang, Dai, Yu-Ting, Ouyang, Shan, Huang, Xiao-Chen, Wu, Xiao-Ping (2023): Unveiling the identity of Diaurora Cockerell, 1903 (Bivalvia, Unionidae): morphology, molecular phylogenetics, and the description of a new species. ZooKeys 1173: 131-144, DOI: http://dx.doi.org/10.3897/zookeys.1173.106148, URL: http://dx.doi.org/10.3897/zookeys.1173.106148
7EDF281CE53F53A89C9E7B1BB926B1A8.taxon	materials_examined	New material. 22 _ NCU _ XPWU _ DA 01 - 02, Fuhe River [抚河], Fuzhou City [抚州市], Jiangxi Province [江西省], China, 27 ° 53 ′ 57 ″ N, 116 ° 34 ′ 03 ″ E, collected by Zhong-Guang Chen, Yu-Ting Dai, Chen-Chen Jia & Ying-Ying Zhang in September 2022. 22 _ NCU _ XPWU _ DA 03 - 15, Ganjiang River [赣江], Jian City [吉安市], Jiangxi Province [江西省], China, 27 ° 12 ′ 39 ″ N, 115 ° 09 ′ 44 ″ E, collected by Zhong-Guang Chen & Zheng-Jie Lou in November 2022. YHC 0028001, Jiulong River [九龙江], Fujian Province [福建省], China, collected by Hao Yang in 2003.	en	Chen, Zhong-Guang, Dai, Yu-Ting, Ouyang, Shan, Huang, Xiao-Chen, Wu, Xiao-Ping (2023): Unveiling the identity of Diaurora Cockerell, 1903 (Bivalvia, Unionidae): morphology, molecular phylogenetics, and the description of a new species. ZooKeys 1173: 131-144, DOI: http://dx.doi.org/10.3897/zookeys.1173.106148, URL: http://dx.doi.org/10.3897/zookeys.1173.106148
7EDF281CE53F53A89C9E7B1BB926B1A8.taxon	diagnosis	Diagnosis. Shell triangular-ovate; posterior margin obliquely arc-shaped. Periostracum with straight broken blackish-green rays. Zigzag sculpture presented on all over the shell surface.	en	Chen, Zhong-Guang, Dai, Yu-Ting, Ouyang, Shan, Huang, Xiao-Chen, Wu, Xiao-Ping (2023): Unveiling the identity of Diaurora Cockerell, 1903 (Bivalvia, Unionidae): morphology, molecular phylogenetics, and the description of a new species. ZooKeys 1173: 131-144, DOI: http://dx.doi.org/10.3897/zookeys.1173.106148, URL: http://dx.doi.org/10.3897/zookeys.1173.106148
7EDF281CE53F53A89C9E7B1BB926B1A8.taxon	description	Description. Shell (Figs 3 A, 4 A). Shell small size, symmetric, solid, moderately thick, sub-glossy, triangular-ovate. Anterior margin oval, inflated; dorsal margin curved downwards; ventral margin slightly rounded or nearly straight; posterior margin obliquely arc-shaped. Umbo inflated, above hinge line, located at 1 / 3 of the dorsal margin, and often eroded. Periostracum orangish to brownish, with straight broken blackish-green rays and thin growth lines. Growth lines arranged in irregular concentric circles. Zigzag sculpture presented on all over the shell surface but weakening from umbo to edge. Hinge short. Ligament short and strong. Mantle muscle scars obvious. Anterior adductor muscle scars oval, deep, smooth in junior but rough in adult; posterior adductor muscle scars long oval, smooth. Left valve with two pseudocardinal teeth, equal height, anterior tooth small and flat, posterior tooth thick and pyramidal; anterior pseudocardinal tooth of the right valve well developed, posterior pseudocardinal tooth reduced, connected to lateral teeth. Lateral teeth of both valves long and thick. Nacre white or light orangish. Length 32.0 - 41.3 mm, height 20.5 - 26.0 mm, width 12.4 - 17.2 mm. Soft anatomy (Fig. 5 A). Mantle off-white to light-brownish, aperture margins brown, flap margin with blackish to brown papillae. Gills light-brownish, inner gills slightly longer and wider than outer gills. Labial palps yellowish to brown (fade to grayish white in alcohol), distally pointed and irregularly fan-shaped in appearance. Visceral mass creamy white, foot orange (fade to grayish white in alcohol).	en	Chen, Zhong-Guang, Dai, Yu-Ting, Ouyang, Shan, Huang, Xiao-Chen, Wu, Xiao-Ping (2023): Unveiling the identity of Diaurora Cockerell, 1903 (Bivalvia, Unionidae): morphology, molecular phylogenetics, and the description of a new species. ZooKeys 1173: 131-144, DOI: http://dx.doi.org/10.3897/zookeys.1173.106148, URL: http://dx.doi.org/10.3897/zookeys.1173.106148
7EDF281CE53F53A89C9E7B1BB926B1A8.taxon	distribution	Distribution and ecology. Scattered in the middle and lower Changjiang River basin and the upper Jiulongjiang River, including Anhui Province, Jiangxi Province, Hunan Province and Fujian Province (Fig. 6). It mainly co-occurs with Aculamprotula polysticta (Heude, 1877), Acuticosta chinensis (Lea, 1868), Cuneopsis heudei (Heude, 1874), Nodularia douglasiae (Gray, 1833), Lamprotula caveata (Heude, 1877), Lanceolaria triformis (Heude, 1877) and Ptychorhynchus pfisteri (Heude, 1874) in the sandy substrates of tributaries of large rivers (Fig. 7). Besides, D. aurorea was reported in Vietnam by Dang et al. (1980), but the specimens were not available for examination (Do et al. 2018). This record is highly dubious due to its considerable distance from the known distribution range of D. aurorea as documented in this study. It is possible that this record was a misidentification of Acuticosta species.	en	Chen, Zhong-Guang, Dai, Yu-Ting, Ouyang, Shan, Huang, Xiao-Chen, Wu, Xiao-Ping (2023): Unveiling the identity of Diaurora Cockerell, 1903 (Bivalvia, Unionidae): morphology, molecular phylogenetics, and the description of a new species. ZooKeys 1173: 131-144, DOI: http://dx.doi.org/10.3897/zookeys.1173.106148, URL: http://dx.doi.org/10.3897/zookeys.1173.106148
B36C7A0DF2735C818CCC0ECD2244C93C.taxon	description	Figs 3 A, B, 4, 5	en	Chen, Zhong-Guang, Dai, Yu-Ting, Ouyang, Shan, Huang, Xiao-Chen, Wu, Xiao-Ping (2023): Unveiling the identity of Diaurora Cockerell, 1903 (Bivalvia, Unionidae): morphology, molecular phylogenetics, and the description of a new species. ZooKeys 1173: 131-144, DOI: http://dx.doi.org/10.3897/zookeys.1173.106148, URL: http://dx.doi.org/10.3897/zookeys.1173.106148
B36C7A0DF2735C818CCC0ECD2244C93C.taxon	diagnosis	Diagnosis. Shell small size, symmetric, flat, sub-glossy, triangular-ovate to reniform, orangish to brownish, with broken blackish-green rays. Zigzag sculpture present. Posterior ridge absent.	en	Chen, Zhong-Guang, Dai, Yu-Ting, Ouyang, Shan, Huang, Xiao-Chen, Wu, Xiao-Ping (2023): Unveiling the identity of Diaurora Cockerell, 1903 (Bivalvia, Unionidae): morphology, molecular phylogenetics, and the description of a new species. ZooKeys 1173: 131-144, DOI: http://dx.doi.org/10.3897/zookeys.1173.106148, URL: http://dx.doi.org/10.3897/zookeys.1173.106148
2FAD20443B5E503AB3549B0EC766F841.taxon	description	Figs 3 B, 4 B, 5 B	en	Chen, Zhong-Guang, Dai, Yu-Ting, Ouyang, Shan, Huang, Xiao-Chen, Wu, Xiao-Ping (2023): Unveiling the identity of Diaurora Cockerell, 1903 (Bivalvia, Unionidae): morphology, molecular phylogenetics, and the description of a new species. ZooKeys 1173: 131-144, DOI: http://dx.doi.org/10.3897/zookeys.1173.106148, URL: http://dx.doi.org/10.3897/zookeys.1173.106148
2FAD20443B5E503AB3549B0EC766F841.taxon	diagnosis	Diagnosis. Shell reniform. Periostracum with irregular broken blackish-green rays. Zigzag sculpture only presented in umbo area.	en	Chen, Zhong-Guang, Dai, Yu-Ting, Ouyang, Shan, Huang, Xiao-Chen, Wu, Xiao-Ping (2023): Unveiling the identity of Diaurora Cockerell, 1903 (Bivalvia, Unionidae): morphology, molecular phylogenetics, and the description of a new species. ZooKeys 1173: 131-144, DOI: http://dx.doi.org/10.3897/zookeys.1173.106148, URL: http://dx.doi.org/10.3897/zookeys.1173.106148
2FAD20443B5E503AB3549B0EC766F841.taxon	description	Description. Shell (Figs 3 B, 4 B). Shell small size, symmetric, solid, moderately thick, sub-glossy, reniform. Anterior margin oval, inflated; dorsal margin curved downwards and truncate; ventral margin slightly rounded or nearly straight; posterior margin oval. Umbo inflated, above hinge line, located at 1 / 3 of the dorsal margin, and often eroded. Periostracum orangish to brownish, with irregular broken blackish-green rays and thin growth lines. Growth lines arranged in irregular concentric circles. Zigzag sculpture only presented in umbo area. Hinge short. Ligament short and strong. Mantle muscle scars obvious. Anterior adductor muscle scars oval, deep, smooth in junior but rough in adult; posterior adductor muscle scars long oval, smooth. Left valve with two pseudocardinal teeth, equal height, anterior tooth small and flat, posterior tooth thick and pyramidal; anterior pseudocardinal tooth of the right valve well developed, posterior pseudocardinal tooth reduced, connected to lateral teeth. Lateral teeth of both valves long and thick. Nacre light orangish. Holotype: length 41.8 mm, height 29.1 mm, width 17.0 mm; Paratypes: length 27.4 - 45.0 mm, height 17.6 - 30.8 mm, width 11.0 - 17.6 mm. Soft anatomy (Fig. 5 B). Mantle off-white to light-brownish, aperture margins brown, flap margin with yellowish papillae. Gills light-brownish, inner gills slightly longer and wider than outer gills. Labial palps yellowish to brown, distally pointed and irregularly fan-shaped in appearance. Visceral mass creamy white, foot orange.	en	Chen, Zhong-Guang, Dai, Yu-Ting, Ouyang, Shan, Huang, Xiao-Chen, Wu, Xiao-Ping (2023): Unveiling the identity of Diaurora Cockerell, 1903 (Bivalvia, Unionidae): morphology, molecular phylogenetics, and the description of a new species. ZooKeys 1173: 131-144, DOI: http://dx.doi.org/10.3897/zookeys.1173.106148, URL: http://dx.doi.org/10.3897/zookeys.1173.106148
2FAD20443B5E503AB3549B0EC766F841.taxon	etymology	Etymology. The specific name laeve is made from the Latin laeve for smooth, an adjective, alluding to the smoother shell surface of this species.	en	Chen, Zhong-Guang, Dai, Yu-Ting, Ouyang, Shan, Huang, Xiao-Chen, Wu, Xiao-Ping (2023): Unveiling the identity of Diaurora Cockerell, 1903 (Bivalvia, Unionidae): morphology, molecular phylogenetics, and the description of a new species. ZooKeys 1173: 131-144, DOI: http://dx.doi.org/10.3897/zookeys.1173.106148, URL: http://dx.doi.org/10.3897/zookeys.1173.106148
2FAD20443B5E503AB3549B0EC766F841.taxon	distribution	Distribution and ecology. Diaurora laeve sp. nov. is known from the type locality only (Fig. 6). It was found to occur in a pebbly substrate of the river together with Nodularia douglasiae and Lanceolaria triformis (Fig. 7). It is the dominant species in the habitat, accounting for 98 % of the total density of freshwater mussels.	en	Chen, Zhong-Guang, Dai, Yu-Ting, Ouyang, Shan, Huang, Xiao-Chen, Wu, Xiao-Ping (2023): Unveiling the identity of Diaurora Cockerell, 1903 (Bivalvia, Unionidae): morphology, molecular phylogenetics, and the description of a new species. ZooKeys 1173: 131-144, DOI: http://dx.doi.org/10.3897/zookeys.1173.106148, URL: http://dx.doi.org/10.3897/zookeys.1173.106148
