Photographs (a) of the holotype of Oligodon speleoserpens sp. nov. (ZMMU Re-17696, adult male) in life; (b) habitat at the type locality, Tham Le Stegodon cave, Satun Province, Thailand; (c) paratype of Oligodon speleoserpens sp. nov. (ZMMU Re-17697, adult female) in life from Tham Khao Ting cave, Trang Province, Thailand; and (d) uncollected adult male specimen of Oligodon speleoserpens sp. nov. from the same locality as the paratype. Photos by Parinya Pawangkhanant (a, b), Nikolay A. Poyarkov (c), and Harry Ward–Smith (d).

 
 
  Part of: Pawangkhanant P, Poyarkov NA, Ward-Smith H, Grassby-Lewis R, Sumontha M, Kliukin NS, Idiiatullina SS, Trofimets AV, Suwannapoom C, Lee JL (2024) A new species of karst-associated kukri snake (Reptilia: Squamata: Colubridae: Oligodon Fitzinger, 1826) from southern Thailand. Vertebrate Zoology 74: 359-379. https://doi.org/10.3897/vz.74.e112132