taxonID	type	description	language	source
03AB5B2EFFBE6B01F48CFB2A3C381937.taxon	type_taxon	Type Species. Jianghuaimon dabiense gen. nov. et sp. nov., by present designation.	en	Zhao, Jun-Da, Xu, Yi-Yang, Huang, Chao (2022): Jianghuaimon dabiense gen. nov. et sp. nov (Crustacea: Decapoda: Potamidae), a new genus and new species of freshwater crab from eastern-central China. Zootaxa 5168 (4): 431-440, DOI: https://doi.org/10.11646/zootaxa.5168.4.3
03AB5B2EFFBE6B01F48CFB2A3C381937.taxon	diagnosis	Diagnosis. Small sized (CW <25 mm). Carapace subquadrate, flat, dorsal surface pitted (Fig. 1); epigastric cristae low; not confluent with postorbital cristae (Fig. 1); external orbital angle bluntly triangular, almost straight (Fig. 1). Epistomial median lobe narrowly triangular (Fig. 2 A). Maxilliped III with relatively broad ischium, exopod reaching beyond anterior edge of ischium, with long flagellum (Fig. 3 A). Cheliped palm surface relatively rugose (Fig. 3 F – G). Male anterior thoracic sternum wide, width 1.8 × length (Fig. 2 B). Male pleon broadly triangular, tip of telson semicircular (Fig. 2 C). G 1 generally slender, pointing anterolaterally, terminal segment large and stout with wide opening at truncate tip, inner margin rounded (Fig. 3 C – E, H – I). G 2 with subquadrate basal segment (Fig. 3 B). Female vulva ovate, large, located within sternite VI (Fig. 2 F).	en	Zhao, Jun-Da, Xu, Yi-Yang, Huang, Chao (2022): Jianghuaimon dabiense gen. nov. et sp. nov (Crustacea: Decapoda: Potamidae), a new genus and new species of freshwater crab from eastern-central China. Zootaxa 5168 (4): 431-440, DOI: https://doi.org/10.11646/zootaxa.5168.4.3
03AB5B2EFFBE6B01F48CFB2A3C381937.taxon	etymology	Etymology. The genus name is an arbitrary combination of the zoogeographic location of the type locality, the Jianghuai freshwater zoogeographic dominion (Huang et al. 2020 a), and the genus name, Potamon Savigny, 1816. Gender: neuter.	en	Zhao, Jun-Da, Xu, Yi-Yang, Huang, Chao (2022): Jianghuaimon dabiense gen. nov. et sp. nov (Crustacea: Decapoda: Potamidae), a new genus and new species of freshwater crab from eastern-central China. Zootaxa 5168 (4): 431-440, DOI: https://doi.org/10.11646/zootaxa.5168.4.3
03AB5B2EFFBE6B01F48CFB2A3C381937.taxon	distribution	Distribution. Huo Shan county, Lu’an city, Anhui province, China; Yingshan County, Huanggang City, Hubei Province, China.	en	Zhao, Jun-Da, Xu, Yi-Yang, Huang, Chao (2022): Jianghuaimon dabiense gen. nov. et sp. nov (Crustacea: Decapoda: Potamidae), a new genus and new species of freshwater crab from eastern-central China. Zootaxa 5168 (4): 431-440, DOI: https://doi.org/10.11646/zootaxa.5168.4.3
03AB5B2EFFBE6B01F48CFB2A3C381937.taxon	discussion	Remarks. Jianghuaimon gen. nov. has a rather unexceptional external appearance and most closely resembles Bottapotamon Türkay & Dai, 1997 and Neilupotamon Türkay & Dai, 1997 in its small size (CW <30 mm), relatively flat carapace with regions distinct, bluntly triangular external orbital angle and slightly unequal chelipeds. Jianghuaimon gen. nov. also resembles Huananpotamon Dai & Ng, 1994 in general external appearance to some extent, its relatively small size (CW <30 mm), having stripe patterned ambulatory legs and a distinctive ovalshaped gold-colour pattern on the third maxilliped. However, Jianghuaimon gen. nov. markedly differs from Bottapotamon, Huananpotamon and Neilupotamon by its unique G 1 structure, which is pointed anterolaterally, subterminal segment slightly curved inwards, terminal segment large and very stout, inner margin strongly convex, tip truncated with wide opening almost same width as terminal segment (Fig. 3 C – E, H – I). In contrast, the G 1 in Bottapotamon is pointed anteromedially, with the subterminal segment generally straight, terminal segment large and slender, inner margin concave, tip truncated with opening smaller than terminal segment width (cf. Gao et al. 2019: fig. 5); in Huananpotamon, pointed anteriorly or anteromedially, with the distal part of subterminal segment neck-shaped, terminal segment slender, inner margin with flap or projection, with small opening at pointed tip (cf. Dai 1999: pls. 63 – 73); and in Neilupotamon, pointed anterolaterally, with the subterminal segment generally straight, terminal segment stout, inner margin almost straight to slightly convex, tip truncated with wide opening almost as wide as the terminal segment (cf. Dai 1999: pls. 201 – 204). Jianghuaimon gen. nov. can further be separated from Bottapotamon, Huananpotamon and Neilupotamon by differences in the carapace, male anterior thoracic sternites and male telson. See Table 1 for detailed comparisons. Moreover, Jianghuaimon gen. nov. was found to be syntopic with Longpotamon depressum, but can immediately be distinguished by its smaller size (CW <25 mm) (versus CW <50 mm in the latter), carapace anterolateral margin with 12 – 15 granules (Fig. 1 A) (versus serrated, with 15 – 18 granules in the latter; Dai 1999: pl. XXII fig. 2), granules on anterolateral margin low and inconspicuous (Fig. 1 A) (versus relatively large conspicuous in the latter; Dai 1999: pl. XXII fig. 2) and its G 1 terminal segment large, stout, with rounded inner margin and wide opening at truncate tip (Figs. 3 C – E, H – I) (versus relatively small G 1 terminal segment with bifurcated tip in the latter; Dai 1999: pl. 179).	en	Zhao, Jun-Da, Xu, Yi-Yang, Huang, Chao (2022): Jianghuaimon dabiense gen. nov. et sp. nov (Crustacea: Decapoda: Potamidae), a new genus and new species of freshwater crab from eastern-central China. Zootaxa 5168 (4): 431-440, DOI: https://doi.org/10.11646/zootaxa.5168.4.3
03AB5B2EFFBD6B04F48CFC423D6E1CB2.taxon	description	(Figs. 1 – 5)	en	Zhao, Jun-Da, Xu, Yi-Yang, Huang, Chao (2022): Jianghuaimon dabiense gen. nov. et sp. nov (Crustacea: Decapoda: Potamidae), a new genus and new species of freshwater crab from eastern-central China. Zootaxa 5168 (4): 431-440, DOI: https://doi.org/10.11646/zootaxa.5168.4.3
03AB5B2EFFBD6B04F48CFC423D6E1CB2.taxon	materials_examined	Type material. Holotype: SYSBM 002003, male (20.4 × 15.7 mm), Yaoluoping National Nature Reserve (31.17 ° N, 116.22 ° E), Huoshan County, Lu’an City, Anhui Province, China, in burrow in mountain seepage, 500 – 550 m a. s. l., coll. Jun-Da. Zhao, October 2020. Paratypes: SYSBM 002005 – 002006, 2 males (15.1 × 11.8 mm, 15.2 × 12.1 mm) same data as holotype. SYSBM 002007, 1 female (16.4 × 13.0 mm) same data as holotype. SYSBM 002004, 1 male (17.4 × 13.4 mm) same data as holotype. SYSBM 002008 – 002009, 1 male (17.5 × 13.2 mm), 1 female (14.8 × 11.4 mm), Dabie Mountains National Nature Reserve (30.97 ° N, 116.04 ° E), Yingshan County, Huanggang City, Hubei Province, China, under rocks in forest floor near mountain stream, 980 – 1100 m a. s. l., coll. Jun-Da. Zhao, October 2020. NCU MCP 4322, 1 male (21.9 × 16.7 mm) same data as holotype. NCU MCP 4323 1 female (14.9 × 11.9 mm) same data as SYSBM 002008 – 002009. NNU 20105 JD 1 – 20105 JD 2, 2 males (16.9 × 12.9 mm, 17.3 × 13.3 mm), Foziling Town (31.33 ° N, 116.23 ° E), Huoshan County, Lu’an city, Anhui Province, China, under rocks on forest floor near mountain stream, 200 – 350 m a. s. l., coll. Jun-Da. Zhao, October 2020.	en	Zhao, Jun-Da, Xu, Yi-Yang, Huang, Chao (2022): Jianghuaimon dabiense gen. nov. et sp. nov (Crustacea: Decapoda: Potamidae), a new genus and new species of freshwater crab from eastern-central China. Zootaxa 5168 (4): 431-440, DOI: https://doi.org/10.11646/zootaxa.5168.4.3
03AB5B2EFFBD6B04F48CFC423D6E1CB2.taxon	description	Description. Carapace broader than long; subquadrate; width 1.3 × length (n = 15); regions clearly demarcated. Dorsal surfaces strongly pitted (Fig. 1). Frontal margin ridged in dorsal view (Fig. 1). Epigastric cristae rugose, blunt, divided by conspicuous groove (Fig. 1, 2 A). Postorbital cristae rugose, slightly raised (Figs. 1, 2 A). Cervical groove relatively large and deep; H-groove visible (Fig. 1). External orbital margin bluntly triangular with nearly no gap with anterolateral margins (Figs. 1, 2 A). External orbital tooth small, inconspicuous (Figs. 1,2 A). Epibranchial tooth low, blunt (Figs. 1,2 A). Anterolateral margin ridged, margins slightly trending upwards, with 12 – 15 granules (Figs. 1,2 A). Posterolateral margin straight, slightly rugose (Fig. 1). Epibranchial region with small, smooth bumps (Fig. 1). Orbits medium-sized; supraorbital margin smooth, slightly ridged; infraorbital margins slightly ridged, lined with numerous inconspicuous granules (Figs. 1,2 A). Sub-orbital, sub-hepatic and upper parts of pterygostomial regions surface relatively rugose; divided with sutures that are lined with numerous inconspicuous granules (Fig. 2 A). Central epistome covered with thick setae (Fig. 2 A). Epistomial median lobe narrowly triangular (Fig. 2 A). Maxilliped III merus width about 1.3 × length; ischium width about 0.8 × length; merus pitted, subtrapezoidal with median depression; ischium trapezoidal, inner-upper margin rounded; with distinct median sulcus; exopod reaching to approximal one – eighth of merus height, with long flagellum length nearly same height with merus (Fig. 3 A). Chelipeds slightly unequal, surface rugose, finely pitted (Figs. 1, 3 F – G). Merus cross section triagonal, margins weakly crenulated, surfaces generally smooth (Figs. 1, 2 A). Carpus inner distal angle with sharp spine and blunt spinule at base, surface rugose (Figs. 1, 2 A). Male major cheliped palm length about 1.4 – 1.5 × height (n = 3), 1.4 × in females (n = 2); dactylus 0.8 × palm length in both sex: males (n = 3), females (n = 2) (Fig. 3 F – G). Palm surface slightly rugose, finely pitted. Inner margin of fingers lined with round, blunt, small to large sized teeth; with small gap when fingers closed (Fig. 3 F – G). Pereiopods II – V (first to fourth ambulatory legs) slender (Fig. 1). Pereiopods III the longest; pereiopods V propodus length 1.9 – 2 × width in males (n = 3) and females (n = 2); dactylus stout, with short, sharp spines on margins (Fig. 1). Male thoracic sternum glabrous, pitted; sternites I – IV wide, width 1.8 × length. Sternites I, II fused, forming a wide triangular shape; sternites II, III fused, separated by a horizontal grove; sternites III, IV fused, with indistinct sulcus (Fig. 2 B). Male sternopleonal cavity deep, long, reaching to imaginary line joining medial part of cheliped coxae (Fig. 2 B – D); median longitudinal suture between sternites VII and VIII relatively short, shallow, not reaching sternite VI (Fig. 2 D). Female vulva ovate, large-sized, opened inwards, oblique to the horizontal axis of pleon, with outer rim; located within sternite suture VI, almost reaching suture V / VI and VI / VII (Fig. 2 F). Pleon and telson broadly triangular in males (Fig. 2 C), broadly ovate in females (Fig. 2 E). Male pleonites III – VI gradually narrower upward; pleonite VI 2.5 × as broad as long; telson 1.5 × as broad as long, with semicircular apex (Fig. 2 C). G 1 generally slender, pointed anterolaterally, long, reaching beyond pleonal locking tubercle while exceeding sternites IV / V suture in situ (Fig. 2 D). Subterminal segment 2.0 × as long as terminal segment (n = 3), inner margin concave, outer margin convex. Terminal segment large and stout with wide opening at truncate tip, inner margin strongly convex, outer margin strongly concave (Fig. 3 C – E, H – I). G 2 basal segment subtrapezoid, about 1.5 – 1.8 × length of flagelliform distal segment (n = 4) (Fig. 3 B).	en	Zhao, Jun-Da, Xu, Yi-Yang, Huang, Chao (2022): Jianghuaimon dabiense gen. nov. et sp. nov (Crustacea: Decapoda: Potamidae), a new genus and new species of freshwater crab from eastern-central China. Zootaxa 5168 (4): 431-440, DOI: https://doi.org/10.11646/zootaxa.5168.4.3
03AB5B2EFFBD6B04F48CFC423D6E1CB2.taxon	etymology	Etymology. The species is named after its type locality, the Dabie Mountains.	en	Zhao, Jun-Da, Xu, Yi-Yang, Huang, Chao (2022): Jianghuaimon dabiense gen. nov. et sp. nov (Crustacea: Decapoda: Potamidae), a new genus and new species of freshwater crab from eastern-central China. Zootaxa 5168 (4): 431-440, DOI: https://doi.org/10.11646/zootaxa.5168.4.3
03AB5B2EFFBD6B04F48CFC423D6E1CB2.taxon	distribution	Distribution. Yaoluoping National Nature Reserve, Foziling Town, Huoshan County, Lu’an City, Anhui Province, China; Dabie Mountains National Nature Reserve, Ying Shan County, Huang Gang City, Hubei Province, China. Color in life. Generally dark brown to umber. Carapace margins, ambulatory legs and chelipeds with orange and black spots. Propodus of ambulatory legs with wide orange stripe (Fig. 5 D). Third maxilliped merus with distinctive goldish oval shaped spot, reaching over to upper ischium in some individuals. Abdomen ivory. Habitat. Jianghuaimon dabiense gen. nov. et sp. nov. is usually found in burrows or under rocks in mountain seepages and streams (Fig. 5 C). The species shows some terrestrial adaptability as evident from them also being found under stones or in dried burrows on land that are relativity distant from the water body (10 – 20 m). This suggests some plasticity in its habitat choice (Fig. 5 B). The species was found within the altitude of 200 – 1100 m a. s. l. Longpotamon depressum (Dai & Fan, 1979), were observed to be syntopic with Jianghuaimon dabiense gen. nov. et sp. nov. in some aquatic habitats.	en	Zhao, Jun-Da, Xu, Yi-Yang, Huang, Chao (2022): Jianghuaimon dabiense gen. nov. et sp. nov (Crustacea: Decapoda: Potamidae), a new genus and new species of freshwater crab from eastern-central China. Zootaxa 5168 (4): 431-440, DOI: https://doi.org/10.11646/zootaxa.5168.4.3
