maximum body size |
193 mm |
182 mm |
235 mm |
nasal shape |
circular |
elongate/elliptical |
elliptical |
nasal colour |
yellow |
orange but not covering entire scale |
yellow-orange with colour extending to surrounding scales |
nostril shape |
round or slightly elliptical and in the centre of nasal scale |
slit like and in the centre of nasal scale, offset dorsally |
elliptical and off-centre in a frontal–ventral direction in nasal scale |
nuchal stripe |
wide and U shaped |
spotting rather than a stripe |
thinner and V shaped |
parietal eye |
enlarged, elongated and coloured |
small, nondescript |
enlarged, elongated and coloured |
mean no. femoral pores |
X=30, s.e.=1.3 |
X=24, s.e.=1.0 |
X=31, s.e.=1.0 |
crest height |
X=2.1 mm, max=4 mm |
X=1.4 mm, max=2 mm |
X=6.5 mm, max=10 mm |
colour pattern sexual dimorphism |
extreme with males displaying striking bands and females lacking bands |
extreme with males displaying striking bands and females lacking bands |
very subtle to non-existent with both sexes displaying striking bands |
eye colour |
red iris |
orange-red iris |
tan–gold iris |