Trimeresurus tenasserimensis sp. nov. in life. Thailand: A–D Khao Kra Jom Mt, Suan Phueng, Ratchaburi, adult male (A, B), adult female (C), and subadult female (D), respectively; E Khao Laem Mt., Suan Phueng, Ratchaburi (subadult male); F–G Kaeng Krachan NP., Phetchaburi (adult male and adult female, respectively); H Namtok Huai Yang NP, Prachuap Khiri Khan (adult female). Myanmar: I Lampi Marine NP., Mergui, Tanintharyi (adult male). Photos by: P. Pawangkhanant (A–E), R. Jaihan (F), A. Tomaszek (G), T. Smith (H), and P. Brakels (I).