taxonID	type	description	language	source
4A0087BFFF9CFFA129FD1979FBB8FB08.taxon	description	Description of holotype (Figs 2 – 4; Table 2). Body colour orange. Cuticle of dorsal and ventral surfaces, and legs, smooth (i. e. without gibbosities or sculpture; Fig. 2). Eye spots present (Figs 2 C, 3 A). Bucco-pharyngeal apparatus of Doryphoribius type (see: Pilato & Binda 2010; Guidetti et al. 2013 b) (Fig. 3). Peribuccal structures and oral cavity armature absent or not visible under LM. Mouth antero-ventral. Ventral lamina present. Stylet furca of typical shape with two condyles and two proximal apophyses. Pharyngeal bulb spherical, with triangular pharyngeal apophyses, and three macroplacoids, without constrictions, and of similar length; microplacoid and septulum absent. Macroplacoids bean-shaped in lateral view; in dorsal view, the first triangular-shaped, the second rectangular-shaped, the third heart-shaped (Fig. 3). First and second macroplacoids close together, the third macroplacoid more distant. Claws long, of Isohypsibius type, similar in size and shape on all legs (Fig. 4). Claws with enlarged and wide bulbous bases; generally, the external claws of first three pairs of legs and the posterior claw of the hind legs with larger bulbous bases (Fig. 4). Claw lunules absent. Primary branches of all claws with thin, short accessory points. Morphometric data of the holotype and eight paratypes are reported in Table 2.	en	Pérez-Pech, Wilbert Andrés, Anguas-Escalante, Abril, Cutz-Pool, Leopoldo Querubin, Guidetti, Roberto (2017): Doryphoribius chetumalensis sp. nov. (Eutardigrada: Isohypsibiidae) a new tardigrade species discovered in an unusual habitat of urban areas of Mexico. Zootaxa 4344 (2): 345-356, DOI: 10.11646/zootaxa.4344.2.9
4A0087BFFF9CFFA129FD1979FBB8FB08.taxon	discussion	Remarks. Paratypes, body length from 188.8 µm to 345.7 µm. The eye spots and the orange colour of the body were visible in live specimens but not in all mounted specimens. Two exuviae were collected, which had eleven and twelve smooth eggs.	en	Pérez-Pech, Wilbert Andrés, Anguas-Escalante, Abril, Cutz-Pool, Leopoldo Querubin, Guidetti, Roberto (2017): Doryphoribius chetumalensis sp. nov. (Eutardigrada: Isohypsibiidae) a new tardigrade species discovered in an unusual habitat of urban areas of Mexico. Zootaxa 4344 (2): 345-356, DOI: 10.11646/zootaxa.4344.2.9
4A0087BFFF9CFFA129FD1979FBB8FB08.taxon	materials_examined	Type repositories. Holotype and 20 paratypes. Holotype and nine paratypes deposited in the Laboratory of Zoology, Chetumal Institute of Technology, Quintana Roo, Mexico; 11 paratypes in the Bertolani collection, Department of Life Sciences, University of Modena and Reggio Emilia, Italy. Character ind 10 ind 2 ind 5 ind 8 ind 9 ind 1 ind 6 holotype ind 4 µm pt index Type locality: Urban zone of Chetumal, Quintana Roo, Mexico, Petcacab street intersection with Tres Garantias street (site S 1: 18 ° 30 ' 13 " N, 88 ° 18 ' 19 " W; 9 m a. s. l.). The substrate was soil sediment with a very clay texture accumulated on the street between the sidewalk and the asphalt (site S 1 in Table 1).	en	Pérez-Pech, Wilbert Andrés, Anguas-Escalante, Abril, Cutz-Pool, Leopoldo Querubin, Guidetti, Roberto (2017): Doryphoribius chetumalensis sp. nov. (Eutardigrada: Isohypsibiidae) a new tardigrade species discovered in an unusual habitat of urban areas of Mexico. Zootaxa 4344 (2): 345-356, DOI: 10.11646/zootaxa.4344.2.9
4A0087BFFF9CFFA129FD1979FBB8FB08.taxon	description	Other sites of collection. S 2, Erick Paolo Martines street intersection with Colibri street; S 3, Petcacab street intersection with Polyuc street; S 4, Jesus Urueta street intersection with Heriberto Frias street (see Table 1).	en	Pérez-Pech, Wilbert Andrés, Anguas-Escalante, Abril, Cutz-Pool, Leopoldo Querubin, Guidetti, Roberto (2017): Doryphoribius chetumalensis sp. nov. (Eutardigrada: Isohypsibiidae) a new tardigrade species discovered in an unusual habitat of urban areas of Mexico. Zootaxa 4344 (2): 345-356, DOI: 10.11646/zootaxa.4344.2.9
4A0087BFFF9CFFA129FD1979FBB8FB08.taxon	etymology	Etymology. The name ‘ chetumalensis ’ refers to the locality in which the new species was found.	en	Pérez-Pech, Wilbert Andrés, Anguas-Escalante, Abril, Cutz-Pool, Leopoldo Querubin, Guidetti, Roberto (2017): Doryphoribius chetumalensis sp. nov. (Eutardigrada: Isohypsibiidae) a new tardigrade species discovered in an unusual habitat of urban areas of Mexico. Zootaxa 4344 (2): 345-356, DOI: 10.11646/zootaxa.4344.2.9
4A0087BFFF9CFFA129FD1979FBB8FB08.taxon	diagnosis	Differential diagnosis. Doryphoribius chetumalensis sp. nov. differs from all the other species of the genus in the distinctly enlarged and wide bulbous base to the claws (Fig. 4). The new species belongs to the zappaloi group (see: Michalczyk & Kaczmarek 2010), having no dorsal cuticular gibbosities and three macroplacoids. With reference to the other species within this group, D. chetumalensis sp. nov. differs, not only by the wide bulbous basal claws, but also in other characters.	en	Pérez-Pech, Wilbert Andrés, Anguas-Escalante, Abril, Cutz-Pool, Leopoldo Querubin, Guidetti, Roberto (2017): Doryphoribius chetumalensis sp. nov. (Eutardigrada: Isohypsibiidae) a new tardigrade species discovered in an unusual habitat of urban areas of Mexico. Zootaxa 4344 (2): 345-356, DOI: 10.11646/zootaxa.4344.2.9
4A0087BFFF9CFFA129FD1979FBB8FB08.taxon	description	- Doryphoribius qinlingense Li et al., 2004 was described as colourless, and with three macroplacoids increasing in length from first to third (Li et al. 2004), in the new species the three macroplacoids are of similar size; claw bases of D. qinlingense are expanded but not enlarged and bulbous, as in the new species; - Doryphoribius longistipes Bartels et al., 2008 was described as having no lunules or cuticular thickening (Bartels et al. 2008), making the swollen and bulbous bases of D. chetumalensis sp. nov. very distinctive in comparison; - Doryphoribius taiwanus Li & Li, 2008 was described as colourless and with a cuticular sculpture of dorsal and lateral tubercles (Li & Li 2008), which are absent in D. chetumalensis sp. nov.	en	Pérez-Pech, Wilbert Andrés, Anguas-Escalante, Abril, Cutz-Pool, Leopoldo Querubin, Guidetti, Roberto (2017): Doryphoribius chetumalensis sp. nov. (Eutardigrada: Isohypsibiidae) a new tardigrade species discovered in an unusual habitat of urban areas of Mexico. Zootaxa 4344 (2): 345-356, DOI: 10.11646/zootaxa.4344.2.9
4A0087BFFF96FFAE29FD18CDFA11F98A.taxon	description	..................................................................................... D. maasaimarensis -. Proximal portion of the main branches of both external and internal claws more wide and tapered abruptly at about half length .......................................................................................... D. zyxiglobus	en	Pérez-Pech, Wilbert Andrés, Anguas-Escalante, Abril, Cutz-Pool, Leopoldo Querubin, Guidetti, Roberto (2017): Doryphoribius chetumalensis sp. nov. (Eutardigrada: Isohypsibiidae) a new tardigrade species discovered in an unusual habitat of urban areas of Mexico. Zootaxa 4344 (2): 345-356, DOI: 10.11646/zootaxa.4344.2.9
4A0087BFFF96FFAF29FD1C4FFA10FE22.taxon	description	more in width .............................................................................. D. macrodon -. Oral cavity armature absent / not visible under LM, buccal tube less than 3 µm in width .................... D. doryphorus 22 (18). Dorsal cuticle smooth but large granules present on legs IV ........................................ D. tergumrudis -. Dorsal cuticle sculptured .............................................................................. 23 23 (22). Ventral sculpture present, lunules on claws present, pt of buccal tube width less than 15, eyes present ........ D. polynettae -. Ventral sculpture absent ............................................................................... 24 24 (23). Lunules on claws absent, pt of buccal tube external width more than 20, eyes absent ..................... D. smokiensis -. Lunules present, those of the internal claws of the first three pairs of legs often could be difficult to see ............... 25 25 (24). A cuticular bar at the base of the inner claws on the first three pairs of legs present, evident lunules of the inner claws ...... ......................................................................................... D. solidunguis -. A cuticular bar at the base of the inner claws on the first three pairs of legs absent ................................. 26 26 (25). Cuticle with a delicate reticulate sculpture of very thin ridges forming a mesh with a tiny tubercle at each crossing, sculptured legs ........................................................................................ D. bindae -. Cuticle with an evident reticulated sculpture with mesh slightly irregular in shape and size, delimited by ridges which form a tubercle at each crossing legs not sculptured .................................................... D. amazzonicus	en	Pérez-Pech, Wilbert Andrés, Anguas-Escalante, Abril, Cutz-Pool, Leopoldo Querubin, Guidetti, Roberto (2017): Doryphoribius chetumalensis sp. nov. (Eutardigrada: Isohypsibiidae) a new tardigrade species discovered in an unusual habitat of urban areas of Mexico. Zootaxa 4344 (2): 345-356, DOI: 10.11646/zootaxa.4344.2.9
4A0087BFFF97FFAF29FD1975FA11FA5A.taxon	description	........................................................................................ D. turkmenicus 34 (33). Configuration of macroplacoids 1> 2> 3, secondary branches of claws longer than 50 % of the primary branches .......... .......................................................................................... D. mexicanus -. Configuration of macroplacoids 2> 1> 3, secondary branches of claws shorter than 50 % of the primary branches ......... ........................................................................................... D. bertolanii 35 (31). Lunules on claws present, freshwater species ........................................................ D. zappalai -. Lunules on legs absent, terrestrial species ................................................................. 36 36 (35). Claws without enlarged bases, ratio of the secondary to the primary branches more than 0.79 ............... D. longistipes -. Claws with enlarged bases ............................................................................ 37 37 (36). Long claws with a wide bulbous base .................................................. D. chetumalensis sp. nov. -. Claws without a wide bulbous base and with a ratio of the secondary to the primary branches less than 0.70 ............ 38 38 (37). Ratio of the secondary to the primary branches of claws more than 0.60 ............................... D. qinlingense -. Ratio of the secondary to the primary branches of claws less than 0.55 ................................. D. korganovae	en	Pérez-Pech, Wilbert Andrés, Anguas-Escalante, Abril, Cutz-Pool, Leopoldo Querubin, Guidetti, Roberto (2017): Doryphoribius chetumalensis sp. nov. (Eutardigrada: Isohypsibiidae) a new tardigrade species discovered in an unusual habitat of urban areas of Mexico. Zootaxa 4344 (2): 345-356, DOI: 10.11646/zootaxa.4344.2.9
