How to Identify the Wamena Green Tree Python (Identification Guide)

Key identifying features

The Wamena green tree python is a locality form of Morelia viridis associated with the Baliem Valley region around Wamena in the central highlands of West Papua. It shows the standard green tree python profile: a laterally compressed body, a strongly prehensile tail, and the species' signature branch-draped resting coil with the head tucked centrally.

Coloration & pattern

Because this locality originates from higher elevations than most other green tree python populations, adults are often described as showing a somewhat darker, deeper green base color, sometimes with a subtle bluish or teal cast, along with light scattered white or blue flecking. The belly is pale cream to white. Juveniles hatch bright yellow or red, following the ontogenetic color change common to the entire species, and gradually turn green over one to two years.

Head, eyes & scales

The head is broad, triangular, and clearly distinct from the neck, bearing heat-sensing pits along the lip scales. Eyes are large with vertical pupils suited to dim forest light. Scales are small and smooth, giving the skin its characteristic glossy appearance.

Size & body shape

Adults generally reach 4 to 6 feet, with the laterally flattened body and strongly prehensile tail typical of the species, well suited to gripping branches in a highland forest canopy.

Range & habitat where you'll see it

This locality form comes from the highland forests surrounding Wamena and the Baliem Valley in the central mountain range of New Guinea, at notably higher elevation than most other green tree python populations, which tend to inhabit lowland rainforest.

How to tell it apart from look-alikes

The deeper, sometimes teal-tinged green reported in Wamena individuals is thought to relate to their cooler highland habitat, but individual color variation exists and confirmed locality data is needed for certainty. As with other green tree pythons, this form is distinguished from the unrelated emerald tree boa by range and head scale differences, and from carpet pythons by its solid green adult pattern rather than a blotched one.