taxonID	type	description	language	source
039C8784FFAF5C3EFF708266D03EFDE9.taxon	description	urn: lsid: zoobank. org: act: D 878905 F- 653 F- 48 BC-A 4 B 1 - 0568766 AC 8 C 8	en	Huang, Chao, Huang, Sheng-Zhuo, Shen, Zhi-Xin (2020): A new long-legged terrestrial freshwater crab, Calcipotamon puglabrum gen. nov et sp. nov. (Crustacea: Decapoda: Potamidae), from Hainan Island, China. Zootaxa 4766 (3): 447-456, DOI: 10.11646/zootaxa.4766.3.4
039C8784FFAF5C3EFF708266D03EFDE9.taxon	vernacular_names	(Chinese name: ḂĪäǟ]	en	Huang, Chao, Huang, Sheng-Zhuo, Shen, Zhi-Xin (2020): A new long-legged terrestrial freshwater crab, Calcipotamon puglabrum gen. nov et sp. nov. (Crustacea: Decapoda: Potamidae), from Hainan Island, China. Zootaxa 4766 (3): 447-456, DOI: 10.11646/zootaxa.4766.3.4
039C8784FFAF5C3EFF708266D03EFDE9.taxon	description	(Figs. 1 – 3, 5)	en	Huang, Chao, Huang, Sheng-Zhuo, Shen, Zhi-Xin (2020): A new long-legged terrestrial freshwater crab, Calcipotamon puglabrum gen. nov et sp. nov. (Crustacea: Decapoda: Potamidae), from Hainan Island, China. Zootaxa 4766 (3): 447-456, DOI: 10.11646/zootaxa.4766.3.4
039C8784FFAF5C3EFF708266D03EFDE9.taxon	type_taxon	Type species. Calcipotamon puglabrum gen. nov. et sp. nov., by current designation.	en	Huang, Chao, Huang, Sheng-Zhuo, Shen, Zhi-Xin (2020): A new long-legged terrestrial freshwater crab, Calcipotamon puglabrum gen. nov et sp. nov. (Crustacea: Decapoda: Potamidae), from Hainan Island, China. Zootaxa 4766 (3): 447-456, DOI: 10.11646/zootaxa.4766.3.4
039C8784FFAF5C3EFF708266D03EFDE9.taxon	diagnosis	Diagnosis. Carapace broader than long, smooth allover, generally convex (Fig. 1); epigastric cristae smooth, low (Fig. 1); external orbital tooth prominent, sharp, separated from anterolateral margin by gap (Fig. 1). Median lobe of epistome broadly triangular (Fig. 2 A). Maxilliped III with relatively broad ischium, exopod reaching beyond anterior edge of ischium, flagellum very short to absent (Fig. 3 A). Cheliped palm surface smooth (Figs. 1, 3 F – G). Ambulatory legs very slender (Fig. 1). Male anterior thoracic sternum relatively narrow, width 1.5 × length (Fig. 2 B). Male pleon narrowly triangular (Fig. 2 C). Female pleon ovate (Fig. 4 E). G 1 generally slender, terminal segment elongated with basal flap (Fig. 3 C – E, H – I). G 2 with long flagellum-like terminal segment (Fig. 3 B). Female vulva positioned closely to one another, ovate, medium-sized, with relatively wide outer rim, reaching sternite suture V / VI but not VI / VII (Fig. 2 F).	en	Huang, Chao, Huang, Sheng-Zhuo, Shen, Zhi-Xin (2020): A new long-legged terrestrial freshwater crab, Calcipotamon puglabrum gen. nov et sp. nov. (Crustacea: Decapoda: Potamidae), from Hainan Island, China. Zootaxa 4766 (3): 447-456, DOI: 10.11646/zootaxa.4766.3.4
039C8784FFAF5C3EFF708266D03EFDE9.taxon	etymology	Etymology. The genus name is an arbitrary combination of Latin calcium and the type genus of Potamidae, Potamon. It alludes to the limestone habitat of the type species. Gender: neuter.	en	Huang, Chao, Huang, Sheng-Zhuo, Shen, Zhi-Xin (2020): A new long-legged terrestrial freshwater crab, Calcipotamon puglabrum gen. nov et sp. nov. (Crustacea: Decapoda: Potamidae), from Hainan Island, China. Zootaxa 4766 (3): 447-456, DOI: 10.11646/zootaxa.4766.3.4
039C8784FFAF5C3EFF708266D03EFDE9.taxon	distribution	Distribution. Changjiang Li Autonomous County, Hainan Island, China.	en	Huang, Chao, Huang, Sheng-Zhuo, Shen, Zhi-Xin (2020): A new long-legged terrestrial freshwater crab, Calcipotamon puglabrum gen. nov et sp. nov. (Crustacea: Decapoda: Potamidae), from Hainan Island, China. Zootaxa 4766 (3): 447-456, DOI: 10.11646/zootaxa.4766.3.4
039C8784FFAF5C3EFF708266D03EFDE9.taxon	discussion	Remarks. Calcipotamon gen. nov. is included in Potamiscinae sensu Yeo & Ng (2004). Although superficially similar to Neotiwaripotamon, the new genus can be separated by the smooth carapace (Fig. 1) (versus anterolateral and sub-orbital regions rugose, sub-hepatic and posterolateral striated in Neotiwaripotamon), low and smooth postorbital cristate (Fig. 1) (versus sharp in Neotiwaripotamon; Dai 1999: plate IV. figs. 2, 3), very short or absent flagellum of the maxilliped III exopod (Fig. 3 A) (versus medium-length flagellum in Neotiwaripotamon; Dai 1999: fig. 40 (1), fig. 41 (1 )), smooth cheliped palm surface (Fig. 1) (versus granulated in Neotiwaripotamon), very slender ambulatory legs (Fig. 1) (versus relatively stouter in Neotiwaripotamon; Dai 1999: plate IV. fig. 2, 3) and terminal segment of G 1 with large basal flap (Figs. 3 C – E, H – I) (versus absent in Neotiwaripotamon; Dai 1999: figs. 40 (4), (5), 41 (4), (5 )). Calcipotamon gen. nov. is similar to Hainanpotamon in terms of G 1 morphology, but can be immediately separated by its less swollen carapace (Fig. 1) (very convex in Hainanpotamon; Yeo & Naruse 2007: fig. 1), smooth carapace (Fig. 1, 2 A) (Sub-orbital, sub-hepatic and pterygostomial granulated in Hainanpotamon; Yeo & Naruse 2007: fig. 1 B), very short or absent flagellum of the maxilliped III exopod (Fig. 3 A) (versus long flagellum in Hainanpotamon; Yeo & Naruse 2007: fig. 2 A), epistome median lobe broadly triangular (Fig. 2 A) (versus very broadly rounded in Hainanpotamon; Yeo & Naruse 2007: fig. 1 B), relatively wider anterior thoracic sternum, width around 1.5 × length (Fig. 2 B) (versus anterior thoracic sternites narrow in Hainanpotamon, width around 1.3 × length; Yeo & Naruse 2007: fig. 2 D), slender legs (Fig. 1) (versus stout in Hainanpotamon; Yeo & Naruse 2007: fig. 1 A). Calcipotamon gen. nov. is also morphologically similar to Tiwaripotamon, but can be separated by the broadly triangular epistome median lobe (Fig. 2 A) (versus very broadly rounded in Tiwaripotamon; Do et al. 2016: fig. 3 B, 4 B, 5 B), narrowly triangular pleon (Fig. 2 C) (versus broadly triangular in Tiwaripotamon; Dai 1999: fig. 184 (2), fig. 185 (2 )) and terminal segment of G 1 with large basal flap (versus small to no flap in Tiwaripotamon; Do et al. 2016: fig. 2 A – F; Dai 1999: figs. 184 (4), (5), 185 (4), (5 )).	en	Huang, Chao, Huang, Sheng-Zhuo, Shen, Zhi-Xin (2020): A new long-legged terrestrial freshwater crab, Calcipotamon puglabrum gen. nov et sp. nov. (Crustacea: Decapoda: Potamidae), from Hainan Island, China. Zootaxa 4766 (3): 447-456, DOI: 10.11646/zootaxa.4766.3.4
039C8784FFAB5C3CFF70868ED76CF8C4.taxon	description	urn: lsid: zoobank. org: act: 48 E 1 B 266 - D 473 - 4754 - ABE 1 - BF 56 FCEDBDC	en	Huang, Chao, Huang, Sheng-Zhuo, Shen, Zhi-Xin (2020): A new long-legged terrestrial freshwater crab, Calcipotamon puglabrum gen. nov et sp. nov. (Crustacea: Decapoda: Potamidae), from Hainan Island, China. Zootaxa 4766 (3): 447-456, DOI: 10.11646/zootaxa.4766.3.4
039C8784FFAB5C3CFF70868ED76CF8C4.taxon	vernacular_names	[Chinese name: Ä ẌṘĀae]	en	Huang, Chao, Huang, Sheng-Zhuo, Shen, Zhi-Xin (2020): A new long-legged terrestrial freshwater crab, Calcipotamon puglabrum gen. nov et sp. nov. (Crustacea: Decapoda: Potamidae), from Hainan Island, China. Zootaxa 4766 (3): 447-456, DOI: 10.11646/zootaxa.4766.3.4
039C8784FFAB5C3CFF70868ED76CF8C4.taxon	description	(Figs. 1 – 3, 5)	en	Huang, Chao, Huang, Sheng-Zhuo, Shen, Zhi-Xin (2020): A new long-legged terrestrial freshwater crab, Calcipotamon puglabrum gen. nov et sp. nov. (Crustacea: Decapoda: Potamidae), from Hainan Island, China. Zootaxa 4766 (3): 447-456, DOI: 10.11646/zootaxa.4766.3.4
039C8784FFAB5C3CFF70868ED76CF8C4.taxon	materials_examined	Type material. Holotype: SYSBM 001961, male (31.6 × 24.5 mm), Wangxia Village (19.00 ° N, 109.15 ° E), Changjiang Li Autonomous County, Hainan Province, China, rock crevice in karst forest, 600 - 900 m a. s. l., coll. C. Huang, June, 2019. Paratypes: SYSBM 001962, male (30.3 × 23.8 mm), same data as holotype. SYSBM 001963 - 001964, 2 females (39.7 × 30.9 mm, 31.5 × 24.6 mm), same data as holotype. AM P. 104569, male (29.3 × 22.6 mm), same data as holotype. AM P. 104570, female (30.4 × 23.7 mm), same data as holotype.	en	Huang, Chao, Huang, Sheng-Zhuo, Shen, Zhi-Xin (2020): A new long-legged terrestrial freshwater crab, Calcipotamon puglabrum gen. nov et sp. nov. (Crustacea: Decapoda: Potamidae), from Hainan Island, China. Zootaxa 4766 (3): 447-456, DOI: 10.11646/zootaxa.4766.3.4
039C8784FFAB5C3CFF70868ED76CF8C4.taxon	description	Description. Carapace broader than long, width 1.3 × length (n = 6), regions indistinct. Dorsal surface smooth, finely pitted, convex (Fig. 1). Front deflexed, margin slightly ridged in dorsal view (Fig. 1). Epigastric cristae low, blunt, divided by a narrow gap (Figs. 1, 2 A). Postorbital cristae smooth, very low (Fig. 1). Branchial regions swollen; cervical groove very shallow; mesogastric region convex (Fig. 1). External orbital tooth prominent, sharp, triangular with almost straight outer margins, separated from anterolateral margin by gap (Figs. 1, 2 A). Epibranchial tooth blunt (Figs. 1, 2 A). Anterolateral margin cristate, lined with smoothly fused granules. Posterolateral surface smooth (Fig. 1). Orbits large, supraorbital and infraorbital margins ridged, smooth (Figs. 1, 2 A). Sub-orbital, subhepatic and pterygostomial regions divided by sutures; surfaces smooth (Fig. 2 A). Epistome median lobe broadly triangular, lateral margins sinuous (Fig. 2 A). Maxilliped III merus width about 1.1 × length; ischium width about 0.7 × length; merus subtrapezoidal with median depression; ischium subtrapezoidal, with distinct median sulcus, mesial margin rounded; exopod reaching to proximal one-fifth of merus height, flagellum very short to absent (Fig. 3 A). Chelipeds (pereiopod I) unequal (Figs. 1, 3 F – G). Merus trigonal in cross section, margins weakly crenulated, surfaces generally smooth (Figs. 1, 2 A). Carpus with sharp spine at inner-distal angle, spinule at base, surfaces smooth (Fig. 1). Major cheliped palm length about 1.5 – 1.6 × height in males (n = 2), 1.5 – 1.7 × in females (n = 3); dactylus 0.9 – 1.0 × palm length in both males (n = 2) and females (n = 3) (Fig. 3 F – G). Palm surface smooth, pitted. Occlusal margin of fingers lined with large and small blunt, round teeth; small gape when closed (Fig. 3 F – G). Pereiopods II – V (first to fourth ambulatory legs) slender, smooth. Pereiopod III merus 0.9 × carapace length in males (n = 3) and females (n = 2). Pereiopods V propodus 3.8 – 4.0 × as long as broad in males (n = 3), and 4.0 – 4.1 × in females (n = 3), shorter than dactylus (Fig. 1). Male thoracic sternum generally smooth, pitted; sternites I – IV relatively narrow, width 1.5 × as length. Sternites I, II fused, forming a subtriangular structure; sternites II, III fused, separated by a deep transverse sulcus; sternites III, IV fused, with inconspicuous sulcus (Fig. 2 B). Male sterno-pleonal cavity reaching anteriorly to level of midlength of chelipeds coxae base (Fig. 2 B); median longtitudinal groove separating sternites VII, VIII deep (Fig. 2 D). Male pleonal locking tubercle positioned posterior to mid-length of sternites V (Fig. 2 D). Female vulva ovate, medium-sized, with relatively wide outer rim, reaching sternite suture V / VI but not VI / VII; positioned closely to one another, orientation slightly oblique to the longitudinal axis of pleon (Fig. 2 F). Pleon narrowly triangular in males (Fig. 2 C) and broadly ovate in females (Fig. 2 E). Male pleonites III – VI progressively narrower, lateral margins almost straight; pleonite VI 2.1 × as broad as long; telson 1.4 × as broad as long, with blunt apex (Fig. 2 C). G 1 generally slender, reaching beyond the pleonal locking tubercle but not to sternites IV / V suture in situ (Fig. 2 D). Subterminal segment 2.7 – 2.9 × as long as terminal segment (n = 3), tapering anteriorly, inner margin slightly convex to convex, outer margin slightly concave. Terminal segment elongated, basal region curved anterolaterally, apex pointed anteriorly, with large rounded basal flap and sharp tip (Fig. 3 C – E, H – I). G 2 subterminal segment 1.7 – 1.9 × as long as the flagellum-like terminal segment (n = 3) (Fig. 3 B).	en	Huang, Chao, Huang, Sheng-Zhuo, Shen, Zhi-Xin (2020): A new long-legged terrestrial freshwater crab, Calcipotamon puglabrum gen. nov et sp. nov. (Crustacea: Decapoda: Potamidae), from Hainan Island, China. Zootaxa 4766 (3): 447-456, DOI: 10.11646/zootaxa.4766.3.4
039C8784FFAB5C3CFF70868ED76CF8C4.taxon	etymology	Etymology. The species name is an arbitrary combination of Latin “ purpura ” and “ glaber ”, which means purple and smooth. The name is used as a noun in apposition.	en	Huang, Chao, Huang, Sheng-Zhuo, Shen, Zhi-Xin (2020): A new long-legged terrestrial freshwater crab, Calcipotamon puglabrum gen. nov et sp. nov. (Crustacea: Decapoda: Potamidae), from Hainan Island, China. Zootaxa 4766 (3): 447-456, DOI: 10.11646/zootaxa.4766.3.4
039C8784FFAB5C3CFF70868ED76CF8C4.taxon	description	Colour in life. Generally dark purple. Joints of chelipeds and ambulatory legs, orbit margins, posterior margin of epistome and upper inner margins of pterygostomial regions orange (Fig. 5 A).	en	Huang, Chao, Huang, Sheng-Zhuo, Shen, Zhi-Xin (2020): A new long-legged terrestrial freshwater crab, Calcipotamon puglabrum gen. nov et sp. nov. (Crustacea: Decapoda: Potamidae), from Hainan Island, China. Zootaxa 4766 (3): 447-456, DOI: 10.11646/zootaxa.4766.3.4
039C8784FFAB5C3CFF70868ED76CF8C4.taxon	biology_ecology	Habitat. This terrestrial species is found from a karstic mountain where they hide in the water-filled crevices of limestone outcrop formed by weathering (Fig. 5 B). Suitable crevices were almost all occupied by at least one crab at the type locality. The new species possesses slender legs which give it increased climbing abilities and mobility on land, which is likely an adaptation to the volatile nature of their preferred habitat and their predatory nature. One specimen was found residing inside a water-filled tree hole, suggesting some plasticity in habitat choice. Several ovigerous females were found during our collection in June but were released after inspection. No other potamids were observed at the type locality.	en	Huang, Chao, Huang, Sheng-Zhuo, Shen, Zhi-Xin (2020): A new long-legged terrestrial freshwater crab, Calcipotamon puglabrum gen. nov et sp. nov. (Crustacea: Decapoda: Potamidae), from Hainan Island, China. Zootaxa 4766 (3): 447-456, DOI: 10.11646/zootaxa.4766.3.4
039C8784FFAB5C3CFF70868ED76CF8C4.taxon	discussion	Remarks. See remarks for genus.	en	Huang, Chao, Huang, Sheng-Zhuo, Shen, Zhi-Xin (2020): A new long-legged terrestrial freshwater crab, Calcipotamon puglabrum gen. nov et sp. nov. (Crustacea: Decapoda: Potamidae), from Hainan Island, China. Zootaxa 4766 (3): 447-456, DOI: 10.11646/zootaxa.4766.3.4
039C8784FFAB5C3CFF70868ED76CF8C4.taxon	distribution	Distribution. Wangxia Village, Changjiang Li Autonomous County, Hainan, China.	en	Huang, Chao, Huang, Sheng-Zhuo, Shen, Zhi-Xin (2020): A new long-legged terrestrial freshwater crab, Calcipotamon puglabrum gen. nov et sp. nov. (Crustacea: Decapoda: Potamidae), from Hainan Island, China. Zootaxa 4766 (3): 447-456, DOI: 10.11646/zootaxa.4766.3.4
