With their tiny scales and barely visible eyes, Blind Snakes won’t be confused with any other snake species. However, their lack of features makes them difficult to distinguish from each other. You might need to inspect minor features of scales, which are described in this Key to Blind Snakes of Thailand. Another useful resource is Systematics of the Blindsnakes.
slender Blind Snakes
The nondescript species found in parks and gardens across Thailand. 20 rows of midbody scales.
Unique with its distinct white head and often white tail as well. 20 rows of midbody scales.
An extremely slender species, sometimes having a pale head. 18 rows of midbody scales.
Similar to Brahminy, but inferior nasal suture contacts preocular instead of 2nd supralabial. Found in Khorat.
Glands are scattered across head scales rather than along lines. Tail blunt with no point. 18 rows of midbody scales. Found in C Thailand.
robust Blind Snakes
Very large. Dark dorsum blends into lighter belly. 24-30 rows of midbody scales. Found throughout Thailand except in south.
Very large. Has distinct separation between dark body and white belly. Typically 24-26 midbody scale rows. Found in S and C Thailand.
Robust but smaller than Diard’s Blind Snake. 20-22 midbody scale rows. Found in E Thailand.
Darkest pigment only on upper 5 scale rows. Deeply concave postsnasal border. 20 midbody scale rows. Found in C Thailand.