I didn't realise their "Savannah Glider" was the same animal as
ariel - I thought it was supposed to be some unknown form.
I can't read the new paper other than the abstract, so I don't know if they discuss the New Guinea animals, but in a 2009 paper (mentioned in the article linked above) -
https://www.researchgate.net/public...pialia_Petauridae_in_Australia_and_New_Guinea - it covers that there are two divergent clades of
P. breviceps in Australia apart for
ariel (i.e. the
P. breviceps and
P. notatus of the new paper) and that there are
five divergent clades in New Guinea which are entirely separate to the Australian clades.
If anyone has access to the new paper, I'd be interested in hearing how good the case is for the new species. When I was in Australia last year I saw my first wild Sugar Gliders - in Sydney and in Brisbane, so handily they would represent two different species.