Table 6.

The PCA loadings for the first two principal components for the measured characters of Chiloglanis species and lineages from southern Africa.

Principal component	1	2
Eigenvalue	90.91	70.84
% variance	22.46	17.50
Adipose fin to caudal peduncle length	-0.02	-0.02
Adipose-fin base length	0.05	-0.01
Adipose-fin height	-0.04	0.00
Anal-fin base length	0.03	-0.05
Anal-fin length along longest ray	-0.03	-0.06
Body depth at anus	-0.02	-0.04
Body depth at dorsal-fin insertion	-0.09	-0.06
Caudal peduncle depth	-0.05	-0.02
Caudal peduncle length	0.08	-0.10
Dorsal-fin to adipose fin length	-0.02	-0.02
Dorsal-fin base length	-0.17	0.08
Dorsal-spine length	-0.06	0.04
Pre-anal length	-0.16	0.17
Pre-dorsal length	-0.10	0.11
Pre-pectoral length	-0.08	0.10
Pre-pelvic length	-0.12	0.15
Pectoral-spine length	0.04	0.01
Pectoral-fin length	0.04	0.03
Pelvic-fin length	0.00	0.02
Width at pectoral-fin insertion	-0.04	0.06
Pelvic-fin interspace	0.00	0.02
Head length	-0.18	0.07
Anterior nares interspace	0.14	-0.08
Eye diameter (vertical axis)	0.11	-0.03
Lower lip length	0.02	0.37
Mandibular tooth row width	-0.16	-0.05
Maxillary barbel length	0.60	-0.41
Mouth width	0.35	0.21
Orbital interspace	-0.18	-0.14
Oral disc length	0.22	0.34
Oral disc width	0.39	0.41
Pre-maxillary tooth-patch length	0.00	0.09
Pre-maxillary tooth-patch width	0.23	0.24
Posterior nares interspace	0.13	-0.13
Snout length	-0.05	0.35
Upper lip length	-0.09	0.15