Two new species of freshwater crab of the genus Aparapotamon Dai & Chen, 1985 (Crustacea, Brachyura, Potamidae) from Yunnan, China Author Tan, Qi-Hong Research Laboratory of Freshwater Crustacean Decapoda & Paragonimus, School of Basic Medical Sciences, Nanchang University, 461 Bayi Avenue, Nanchang City, Jiangxi Province 330006, China Author Zhou, Xiao-Juan Research Laboratory of Freshwater Crustacean Decapoda & Paragonimus, School of Basic Medical Sciences, Nanchang University, 461 Bayi Avenue, Nanchang City, Jiangxi Province 330006, China Author Zou, Jie-Xin https://orcid.org/0000-0002-5549-2167 Research Laboratory of Freshwater Crustacean Decapoda & Paragonimus, School of Basic Medical Sciences, Nanchang University, 461 Bayi Avenue, Nanchang City, Jiangxi Province 330006, China & Key laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Nanchang University, 1299 Xuefu Avenue, Nanchang City, Jiangxi Province 330031, China jxzou@ncu.edu.cn text ZooKeys 2021 2021-08-20 1056 149 171 http://dx.doi.org/10.3897/zookeys.1056.63755 journal article http://dx.doi.org/10.3897/zookeys.1056.63755 1313-2970-1056-149 569F6C2B8F214048B8D885525264217C CBBA6D635B8A55E294237370CD1936F3

Table 2. Morphological differences among species of Aparapotamon.

Species/characters	Epibranchial tooth	Pterygostomial and sub-hepatic regions	Sub-orbital region	G1 in situ	Terminal segment of G1	Vulva
A. binchuanense sp. nov.	Blunt (Fig. 1A)	Densely covered with round granules (Fig. 1C)	Sparely covered with round granules (Fig. 1C)	Exceeding pleonal locking tubercle but not suture 4/5 (Fig. 2F)	Slender, distal end tapering, distinctly bent (Fig. 9A)	Ovate, posterior margin not convex (Fig. 3C)
A. huizeense sp. nov.	Sharp (Fig. 5A)	Sparely covered with round granules (Fig. 5C)	Smooth (Fig. 5C)	Exceeding suture 4/5 (Fig. 6F)	Very slender, distal end slightly bent, dorsal lobe well developed inward (Fig. 9B)	Ovate, posterior margin distinctly convex (Fig. 7C)
A. inflomanum (cf. Dai 1999: fig. 196)	Blunt	Smooth	Smooth	Reaching suture 4/5	Slender, distal end disc-shaped (Fig. 9C)	Ovate, posterior margin not convex
A. molarum (cf. Dai 1999: fig. 195)	Blunt	Smooth	Smooth	Exceeding suture 4/5	Slender, distal end disc-shaped (Fig. 9D)	Transversely ovate, posterior margin not convex
A. emineoforaminum (cf. Dai 1999: fig. 197)	Blunt	Densely covered with round granules	Smooth	Exceeding suture 4/5	Very slender, tapering distally (Fig. 9E)	Ovate, posterior margin distinctly convex
A. tholosum (cf. Dai 1999: fig. 194)	Sharp	Densely covered with round granules	Smooth	Exceeding pleonal locking tubercle but not suture 4/5	Slender, dorsal lobe well developed upwards (Fig. 9F)	Transversely ovate, posterior margin distinctly convex
A. protinum (cf. Dai 1999: fig. 193)	Sharp	Densely covered with round granules	Smooth	Exceeding pleonal locking tubercle but not suture 4/5	Slender, dorsal lobe slightly developed upwards (Fig. 9G)	Transversely ovate, posterior margin arching to form semicircular structure
A. arcuatum (cf. Dai 1999: fig. 191)	Blunt	Sparely covered with round granules	Smooth	Exceeding pleonal locking tubercle but not suture 4/5	Slender, arc-shaped, dorsal lobe slightly developed upwards (Fig. 9H)	Transversely ovate, posterior margin not convex
A. muliense (cf. Dai 1999: fig. 192)	Blunt	Sparely covered with round granules	Smooth	Exceeding pleonal locking tubercle but not suture 4/5	Slender, arc-shaped, dorsal lobe well developed upwards (Fig. 9I)	Transversely ovate, posterior margin distinctly convex
A. grahami (cf. Dai 1999: fig. 187)	Sharp	Sparely covered with round granules	Smooth	Reaching pleonal locking tubercle	Slender, dorsal lobe variably developed inwards (Fig. 9J)	Ovate, posterior margin slightly convex
A. huiliense (cf. Dai 1999: fig. 189)	Sharp	Sparely covered with round granules	Smooth	Exceeding pleonal locking tubercle but not suture 4/5	Slender, dorsal lobe roundly developed (Fig. 9K)	Transversely ovate, posterior margin slightly convex
A. similium (cf. Dai 1999: fig. 188)	Blunt	Densely covered with round granules	Sparely covered with round granules	Exceeding pleonal locking tubercle but not suture 4/5	Slender, dorsal lobe slightly developed inwards, tapering distally (Fig. 9L)	Transversely ovate, posterior margin distinctly convex
A. gracilipedum (cf. Dai 1999: fig. 190)	Sharp	Densely covered with round granules	Sparely covered with round granules	Exceeding pleonal locking tubercle but not suture 4/5	Slender, dorsal lobe slightly developed inwards, distal end blunt (Fig. 9M)	Ovate, posterior margin slightly convex