Well, supposedly there are two subspecies (see link). However, I'm not sure if they are accepted as valid because Pseustes is so obscurely studied.
I'm curious to see if there is a possible link between the two subspecies and the two obvious color phases. I've been trying to determine if black and yellow specimens (such as Bill's, tiger lipped specimens) are a possibly different subspecies than the green and yellow specimens. Also, I'm curious to see how my hatchlings will turn out in terms of coloration. I wonder if both color phases will appear among the hatchlings. It's just an idea, but I'd certainly like to find out the prevailing difference between the subspecies. That is, if there are indeed two subspecies.
Link
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Roy Blodgett
Green Man Herpetoculture
royreptile@yahoo.com
1.1 Drymarchon corais
1.1 Pseustes sulphureus
1.1 Masticophis taeniatus taeniatus
0.0.1 Coluber mormon
1.1 Lampropeltis getula californiae (desert phase)
1.0 Boiga dendrophila dendrophila
2.3 Pogona vitticeps (snow and red/gold)
1.0 Iguana iguana
“All men lie enveloped in whale-lines. All are born with halters round their necks; but it is only when caught in the swift, sudden turn of death, that mortals realize the silent, subtle, ever-present perils of life.”- Herman Melville