Table 2. Morphometric data for Trichomycterus ytororo: holotype and paratypes (n = 12).

SD: standard deviation. Range, Mean and SD include holotype.

	Holotype	Range	Mean	SD
Standard length (mm)	94.2	60.9–107.2
Percents of standart length
Head length	20.1	19.7–22.5	20.9	0.9
Predorsal length	60.5	60.2–63.9	61.9	1.0
Prepelvic length	55.2	54.9–58.5	56.4	1.1
Preanal length	69.9	67.7–73.8	71.3	1.6
Scapular girdle width	17.2	16.1–18.3	17.3	0.6
Trunk length	36.6	34.7–39.4	37.9	1.3
Pectoral–fin length	10.7	10.2–12.4	11.1	0.7
Pelvic–fin length	8.3	7.9–9.7	8.7	0.5
Distance between pelvic–fin base and anus	8.9	8.2–10.2	8.9	0.7
Caudal peduncle length	23.4	20.3–23.4	21.7	0.9
Caudal peduncle depth	18.2	15.6–18.2	17.1	0.8
Body depth	19.9	18.0–20.4	19.4	0.6
Length of dorsal–fin base	12.2	11.3–12.6	11.9	0.4
Length of anal–fin base	8.9	8.3–10.4	8.9	0.6
Percents of head length
Head width	92.7	82.3–94.7	88.4	3.9
Nasal barbel length	29.2	22.5–33.9	29.0	3.3
Maxillary barbel length	32.2	23.1–33.8	30.0	3.5
Rictal barbel length	28.0	25–36.6	29.6	3.4
Snout length	42.4	36.5–42.6	40.7	2.0
Interorbital	21.2	19.1–24.4	21.8	1.6
Mouth width	32.4	26.8–34.5	31.8	2.2
Eye diameter	12.6	11.3–16.1	13.4	1.3
Supra–orbital pore distance	12.2	6.8–14	10.4	2.1