This is the book you should buy ... It had a Green Python on the cover and is a definitive work on the subject.  Click here for further details.GREEN PYTHONS

Normanby island green tree python

Chondropython viridis Adelynhoserae HOSER 2009

The following is taken from the paper:

Hoser, R. T. 2009. Creationism and contrived science: A review of recent python systematics papers and the resolution of issues of taxonomy and nomenclature.
Australasian Journal of Herpetology 2 (2009):1-34.

Chondropython viridis Adelynhoserae subsp. nov.

Holotype: A specimen in the Australian Museum R129716, from Normanby Island, Milne Bay, Papua New Guinea.

Diagnosis: This is the form of Green Python restricted to Normanby Island, Milne Bay Province, PNG.

It is separated from all other Chondropython in New Guinea and Australia by it’s adult dorsal pattern of (smallish) white blotches that in the main do not cover the spinal ridge, as seen in all other Australian and other PNG Chondropython.

Sometimes Chondropython from elsewhere will have similar blotches, but invariably, these snakes either also have a mid-dorsal line or dots (not seen in adelynhoserae), or the blotches run well over the spinal (mid dorsal) mid-line.

Green Tree Python from Australia.MtDNA for the holotype was examined by Rawlings and Donellan 2003 and compared with other Chondropython yielding traits broadly in line with C. viridis viridis (but a three per cent sequence divergence) (see p. 41 their paper).  Having said that, it also shared five nucleotide substitutions that would otherwise be synapomorphies of the northern lineage, one of which is an indel.

This result in terms of mtDNA and base pair analysis, as published by Rawlings and Donellan 2003, forms an additional and/or alternative diagnostic means of identifying and separating C. v. adelynhoserae subsp. nov. from other Chondropython.

In other words, the taxon C. v. adelynhoserae subsp. nov. can be separated from other C. viridis by the degree of base pair separation/divergence of mtDNA and/or nuclear DNA as detailed by Rawlings and Donellan 2003.

This is the only Chondropython taxon found on Normanby Island, Milne Bay Province, PNG and is allopatric to all other C. viridis or C. azureus.

Etymology: Named after the elder daughter of this author, Adelyn (pronounced: Adder-lyn) Hoser, in honor of her valuable education work at educational reptile demonstrations and the like, including from the age of five safely handling venomoid versions of the world’s five deadliest snake genera, namely Parademansia, Oxyuranus, Pseudonaja, Notechis and Acanthophis and most importantly after five years of doing so, never having had a single bite! This emphatically proves that the best way to avoid snakebites is to be nice to them.


Based on what is now believed to be allopatric distribution and factors outlined elsewhere, the named taxa of Green Python are now as follows:

Chondropython viridis (Schlegel 1872), southern New Guinea generally and offshore Islands.

Chondropython viridis shireenae Hoser 2003, Australia only.

Chondropython viridis adelynhoserae subsp. nov. (this paper), Normanby Island, New Guinea.

Chondropython azureus Meyer 1875, New Guinea north of the central range, including offshore islands.

Maxwell (2005), gave detailed information about local “races” of Chondropython, including from islands.  However noting the extreme phenotypic variation of the genus and the non-sampling of intermediate populations (when available), and the added variables of local adaptations to altitude and so on resulting in localized colour variants and the like, there is no evidence that any of the forms identified in the book warrant recognition beyond the taxa (to subspecies level) identified in this paper based on available evidence, most notably that of Rawlings and Donnellan 2003.

Notwithstanding this, the book remains mandatory reading for those with an interest in the genus.

The above is from the paper:

Green Tree Python from Australia.Hoser, R. T. 2009. Creationism and contrived science: A review of recent python systematics papers and the resolution of issues of taxonomy and nomenclature.
Australasian Journal of Herpetology 2 (2009):1-34.

Click on the above text to download the paper.

Webpage keywords include:Green Python Chondropython viridis, Australia, Australian, Chondropython viridis shireenae, Chondropython azureus is from Northern New Guinea, species and subspecies, Chondropython adelynhoserae is from Normanby Island, PNG, Meyer, Hoser, 2009, Hoser 2003, Green Tree Python, Chondropython nominate form is from southern New Guinea and nearby Islands

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