Table 5. Measurements of specimens of Potamotyrgon amandae analyzed in this study, including the holotype (A) MZUSP 110910. Mean (x) and Standard Deviation (SD) are expressed in proportions of disc width (% DW), and range is expressed in millimeters (mm) and proportions of disc width (% DW). Clasper measurements were taken only from adult specimens.
|
A |
n |
Range |
x |
SD |
|
mm |
%DW |
|
mm |
%DW |
%DW |
%DW |
| Disc width |
341 |
|
37 |
192 - 341 |
|
|
|
| Disc length |
380 |
111.4 |
37 |
208 - 380 |
105.5 - 121.4 |
110.3 |
3.0 |
| Total length |
592 |
173.6 |
32 |
356 - 592 |
138.2 - 199.6 |
177.7 |
13.4 |
| Interorbital distance |
51 |
15.0 |
37 |
26 - 51 |
11.5 - 16.9 |
14.8 |
1.2 |
| Interspiracular distance |
62 |
18.2 |
37 |
37 - 62 |
17.2 - 21.4 |
19.2 |
1.3 |
| Preorbital distance |
80 |
23.5 |
35 |
47 - 85 |
21.1 - 26.5 |
23.4 |
1.3 |
| Eye diameter |
15 |
4.4 |
37 |
11 - 16 |
3.8 - 6.9 |
4.9 |
0.6 |
| Spriracular length |
29 |
8.5 |
37 |
13 - 34 |
8.2 - 12.8 |
10.1 |
1.0 |
| Prenasal distance |
51 |
15.0 |
37 |
26 - 51 |
11.8 - 16.8 |
14.0 |
1.2 |
| Preoral distance |
71 |
20.8 |
37 |
37 - 71 |
16.5 - 23.1 |
20.2 |
1.5 |
| Internasal distance |
26 |
7.6 |
37 |
14 - 28 |
6.6 - 9.6 |
7.9 |
0.7 |
| Mouth width |
28 |
8.2 |
37 |
15 - 30 |
7.0 - 11.7 |
8.8 |
1.1 |
| Space between 1st branchial slits |
86 |
25.2 |
37 |
47 - 86 |
22.9 - 29.5 |
25.4 |
1.6 |
| Space between 5th branchial slits |
64 |
18.8 |
37 |
32 - 64 |
16.6 - 20.9 |
17.9 |
1.1 |
| Branchial basket length |
58 |
17.0 |
37 |
32 - 58 |
16.1 - 20.0 |
17.3 |
1.0 |
| Length ant. margin of pelvic fin |
91 |
26.7 |
37 |
40 - 91 |
18.6 - 27.2 |
23.1 |
2.0 |
| Pelvic fins width |
180 |
52.8 |
37 |
100 - 192 |
48.0 - 64.6 |
57.8 |
3.9 |
| Length ext. margin of clasper |
- |
- |
9 |
26 - 40 |
10.0 - 13.9 |
12.3 |
1.2 |
| Length int. margin of clasper |
- |
- |
9 |
57 - 83 |
23.2 - 26.7 |
25.6 |
1.0 |
| Cloaca to tip tail |
256 |
75.1 |
32 |
163 - 270 |
54.5 - 102.3 |
82.1 |
11.5 |
| Tail width between pectoral insertions |
45 |
13.2 |
37 |
16 - 45 |
7.2 - 13.6 |
11.0 |
1.4 |
| Snout to cloaca |
312 |
91.5 |
37 |
168 - 312 |
84.0 - 114.6 |
89.8 |
4.7 |
| Distance between pectoral axil and posterior margin of pelvic fin |
40 |
11.7 |
37 |
18 - 60 |
8.4 - 20.7 |
13.1 |
2.2 |
| Cloaca to serrated-spine |
149 |
43.7 |
33 |
80 - 164 |
38.6 - 56.8 |
45.6 |
4.8 |
| Caudal sting length |
81 |
23.8 |
29 |
38 - 81 |
13.9 - 28.8 |
22.1 |
3.5 |
| Caudal sting width |
8 |
2.3 |
31 |
3 – 8 |
1.3 - 2.9 |
1.9 |
0.3 |
| Dorsal pseudosiphon |
- |
- |
8 |
7 - 12 |
2.3 - 5.2 |
3.1 |
0.8 |
| Ventral pseudosiphon |
- |
- |
8 |
21 - 26 |
7.1 - 10.3 |
9.0 |
1.0 |