Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography Author João Pedro Fontenelle Author Marcelo R. De Carvalho text Zootaxa 2017 4310 1 1 63 journal article 32357 10.11646/zootaxa.4310.1.1 fa2c148d-adf5-4ee3-9eee-d6f18b85c44d 1175-5326 846227 51059A1A-74EE-4DFC-90DD-B9130CE267CB

TABLE 5. Morphometric data for P. amazona sp. nov. SD: standard deviation.

Total length 9 Disc length 9	mm 972 571	% DW mm - 717 107.3 433	%DW mm % DW - 717–1055 - 106.9 433–595 101.9–108.7	% DW - 105.2	% DW - 2.3
Disc width 9	532	- 405	- 405–584 -	-	-
Interorbital space 9 Interspiracular space 9	80 84	15.0 72 15.8 74	17.8 71–88 14.4–17.8 18.3 74–100 15.4–18.3	15.8 16.9	1.1 0.9
Eye length 9 Spiracle length 9	12 41	2.3 13 7.7 32	3.2 12–18 2.3–3.2 7.9 32–48 6.9–8.6	2.7 7.7	0.3 0.6
Preorbital length 9 Prenasal length 9	137 90	25.8 103 16.9 71	25.4 103–142 22.1–25.8 17.5 71–97 16.1–17.5	24.6 16.8	1.2 0.4
Preoral length 9 Internarial space 9	123 44	23.1 98 8.3 35	24.2 98–130 22.3–25.8 8.6 35–48 7.5–9.5	23.6 8.5	0.8 0.6
Mouth width 9 Space between 1 st branchial slits 9 Space between 5 th branchial slits 9	54 143 201	10.2 39 26.9 114 37.8 81	9.6 39–54 8.5–10.2 28.1 114–148 25.3–28.1 20.0 81–201 17.4–37.8	9.4 26.9 21.6	0.6 1.0 6.1
Branchial basket length 9 Pelvic fin length 9	84 136	15.8 68 25.6 109	16.8 68–99 14.5–17.7 26.9 109–138 23.1–27.3	16.5 24.9	1.0 1.5
Pelvic fin width 9 Clasper external edge length 9	301 51	56.6 263 9.6 -	64.9 263–352 52.6–64.9 - 26–70 5.6–13.3	56.9 10.2	3.7 2.4
Clasper internal edge length 9 Cloaca to tail tip 9	100 468	18.8 - 88.0 327	- 51–114 11.0–21.0 80.7 327–580 80.7–109.2	17.8 89.3	3.0 9.6
Tail width 9 Snout to cloaca 9	82 470	15.4 61 88.3 370	15.1 61–115 12.9–21.7 91.4 370–497 82.9–92.7	16.7 88.7	2.8 2.9
Pectoral axil to posterior edge of 9 pelvic fin Cloaca to caudal sting 9 Caudal sting length 9	85 301 99	16.0 53 56.6 211 18.6 75	13.1 53–85 11.0–16.0 52.1 211–339 50.0–64.7 18.5 75–112 16.6–20.2	14.0 56.7 18.5	1.5 4.7 1.0
Caudal sting width 9	10	1.9 6	1.5 6–14 1.2–2.7	1.8	0.5