Red-tailed Green Ratsnake

About the Red-tailed Green Ratsnake

Gonyosoma oxycephalum, known commonly as the arboreal ratsnake, the red-tailed green rat snake, and the red-tailed racer, is a species of snake in the family Colubridae. The species is endemic to Southeast Asia. It was first described by Friedrich Boie in 1827.

G. oxycephalumm is found in Indonesia (Bangka, Belitung, Java, Kalimantan/Borneo, Karimata, Legundi, Lombok, Mentawai islands, Natuna islands, Nias, Panaitan, Riau archipelago, Sebuku, Sumatra, Tambelan archipelago), Malaysia (Malaya and East Malaysia, Pulau Tioman ?),

Singapore Island, Penang Island, India (Andaman Islands), Myanmar, Thailand (incl. Phuket), Cambodia, Laos, Vietnam, Philippine Islands (Balabac, Bohol, Catanduanes, Lubang, Luzon, Negros, Palawan, Sulu Archipelago, Panay).

The type locality is Indonesia: Java (F. Boie, 1827). G. oxycephalum is a robust powerful snake, with wide smooth scales on its belly that are ideal for climbing trees and across branches. It has smaller, smooth scales on its back, which is usually bright green or light green and may have a black net-like pattern. A gray-colored morph with a yellow head exists in Panay, in the Philippines.

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