Reptiles and Amphibians of Thailand

Thailand's Snakes, Lizards, Turtles, and Frogs

Identifying Bronzebacks in Thailand

Bronzebacks are dark, very slender snakes equally at home on the ground or in low vegetation. They are active during the day and move extremely fast when threatened.

Bronzebacks with white dorsolateral stripe

Striped Bronzeback
Striped Bronzeback Gray Bronze Tree Snake Dendrelaphis caudolineatus Malaysia
Alex Figueroa / CC BY-NC

Very distinct light dorsolateral stripe bordered in black, several black lines on dorsal region of body, lacks a black eyestripe.

Painted Bronzeback
PaiPainted Bronzeback Common Bronzeback Dendrelaphis pictus Malaysianted Bronzeback Common Bronzeback Dendrelaphis pictus Malaysia
© Steven Wong

Distinct light dorsolateral stripe bordered in black, no black lines on top, black eyestripe connects to black body line, red tongue

Mountain Bronzeback
Mountain Bronzeback Burmese Dendrelaphis subocularis งูสายม่านเกล็ดใต้ตาใหญ่ thailand
Thai National Parks / CC BY-SA

Distinct light dorsolateral stripe, light dorsal stripe on top of forebody, black eyestripe indistinct, 1 large subocular scale, black tongue

Haas’s Bronzeback
Haas's Bronzeback Dendrelaphis haasi singapore
budak / CC BY-NC-ND

Indistinct dorsolateral stripe not edged in black, light brown head and dorsum, narrow black eyestripe often ends early, small and very slender

Bronzebacks without light dorsolateral stripe

Blue Bronzeback
Blue Bronzeback Wall's Bronzeback Dendrelaphis cyanochloris งูสายม่านฟ้าเขียว malaysia
© Daniel Rosenberg

Yellowish chin becomes greenish further back, black eyestripe continues well onto neck, 1st dorsal scale row much lighter than others, throat shows blue when agitated, 135-157 subcaudals

Elegant Bronzeback
Elegant Bronzeback Beautiful Dendrelaphis formosus งูสายม่านหลังทอง java indonesia
nmoorhath / CC BY-NC

Yellowish chin becomes greenish further back, black eyestripe continues onto neck, black stripes on back 1/3 of body, throat shows blue when agitated, slender with large eye

Vogel’s Bronzeback
Vogel's bronzeback Dendrelaphis vogeli china holotype
© Ren Jin-Long

Yellow chin becomes yellowish-brown further back, black eyestripe continues onto neck and transitions to indistinct black bars, 1st dorsal scale row same color as others, throat shows blue when agitated, 130-135 subcaudals

Nganson Bronzeback
Nganson Bronzeback Vietnamese Dendrelaphis ngansonensis งูสายม่านเวียตนาม thailand khao yai
© Mike Pingleton

Cream to tan below, black eyestripe only goes short distance onto neck, brown mottling on body, throat shows blue when agitated, large and robust

Banded Bronzeback
Banded Cohn's Bronzeback Striated Bronzeback Tree Snake Dendrelaphis striatus borneo
© Chien C. Lee

Yellow to cream below, thick black eyestripe quickly turns to narrow slanted bars on neck, throat shows yellow when agitated, small in size with 149-167 ventrals and 120-145 subcaudals

Sawtooth-necked Bronzeback
Dendrelaphis nigroserratus Sawtooth-necked bronzeback thailand Kaeng Krachan
Thai National Parks / CC BY-SA

Yellow to green below, thick black eyestripe becomes “sawtooth” on neck then breaks into thick bars, throat has yellowish tint but shows blue when agitated, large with 197-204 ventrals and 148-152 subcaudals

Kopstein’s Bronzeback
Kopstein's Bronzeback Red-necked Dendrelaphis kopsteini งูสายม่านคอแดง singapore
© Kenneth Chin

Yellowish chin becomes pale green further back, thin black eyestripe ends at corner of jaw, upper portion of neck is rust-colored

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