1.	Visible sensory pits absent	Aspidites
–	Visible sensory pits present	2
2.	Rostral unpitted	3
–	Rostral pitted	6
3.	No visible black pigmentation between the scales	4
–	Black pigmentation visible between the scales	Apodora
4.	Number of loreals fewer than 3	5
–	Number of loreals more than 3	Antaresia
5.	Head color not black, head distinct from neck, two pairs of prefrontals	Liasis
–	Head color black, head bearly distinct from neck, one pair of prefrontals	Bothrochilus
6.	Body unpatterned	Leiopython
–	Body patterned	7
7.	Lateroposterior margin of nasal exposed, plane of ventral position of postorbital is directed anterolaterally, neck is markedly narrower than the head in adults	Morelia
–	Lateroposterior margin of nasal is covered by prefrontal, plane ventral position of postorbital is directed anteriorly, neck is slightly narrower than the head in adults	8
8.	Well defined square or triangular supralabial pits, infralabials less well developed and not set in a groove	Python
–	Less well defined diagonal supralabial pits, infralabials placed in a longitudinal groove and ventrally in a fold	Broghammerus