黑叶猴和菲氏叶猴的皮纹

DERMATOGLYPHICS OF THE FRANCOIS' LEAF MONKEY (Presbytis francoisi) AND PHAYRE'S LEAF MONKEY(P. pharei)

13 Francoi's leaf monkeys (5 males and 8 females) and 7 Phayre's leaf monkeys (2 males and 5 females) were used to observe the derrnatoglyphics on the hands and feet, The patterns examined include digital end I-IV, interdigital area, thenear and hypothenar, the triradius and flexure lines on the plams and soles. The results are as follows: 1) All of the patterns on the digital end are sinus primarius. There exist four kinds of patterns in the seven areas of the plams, that is L(looped form), O (opened field form). W (whorled form) and Z (composite form). However, most of them are the L forms. On the soles, six kinds of them, L. O. W., A (arches), A and U (unknown form) appear. Like on the palm, most of them are the L pattern. 2) Number of the triradius is different on the palms. 5-7 on the palm which constantly exist t1 and t7 for the P. francoisi, t1, t3 and t7 for the P. phayrei; 4-6 on the soles which constantly represent t2, t9, and t13 for the P. francoisi, t9 and t13 for P. phayrei 1. 3) Flexure lines form joint lines of the skin on the palms and soles. There exist 1 to 2 lines on the distal digits, 2 to 3 in interdigits. Flexure lines on fhe digital proximal form a continuous common line which is attached by some lines with different shapes or by branched one. There exist two flexure lines on the palms and soles. Two flexure lines on the wrist, which sometimes is branched away, usually are recorded. The longitudinal flexurelines of the radialis and tibialis sides are the constant on the plams and soles. 4) Multivariate analysis (R cluster analysis) demonstrates the relationship between the patterns for these two leaf monkeys.