|Diagnosis||Description: Top of body is red, reddish brown, charcoal-grey, pale grey or brown; an indistinct narrow, dark stripe is present along middle of forehead; supralabials are dark; a pale, narrow post-ocular stripe extends to angle of jaws; dorsal pattern comprises vertebral spots; dark blotches on flanks are rounded and set within paler areas; belly is anteriorly cream and posteriorly dark, with grey smudges and blotches. Body is short and robust; head is elongate, flat and distinct from neck; vertebral region is ridged; tail is short; cloacal spurs are present (Das 2012: 16).|
Coloration: Shine et al. (1998) classified this species into four types, based on their predominant dorsal colour: brown, orange, red or yellow. In the study area, all blood pythons are brown or orange-brown at hatching, and develop their adult colours gradually. The analyses of DNA sequence data by Shine et al. revealed no genetic differences between the colour morphs of P. brongersmai (S. Keogh et al., unpublished work; cited in Shine et al.). Studies of captive snakes indicate that all four colour morphs are interfertile and readily interbreed, with offspring
from a single litter often developing into adults of two or three colour morphs (Barker and Barker 1996; D. and T. Barker, personal communication, cited in Shine et al.). However, the four colour morphs of P. brongersmai differed significantly in most of the traits that Shine et al. measured. In both sexes, for example, red snakes were substantially larger and heavier than yellow snakes.
Scalation: The ventral scale count is >167 in brongersmai but <165 in the other forms (GH Rodda, pers. comm.).
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