Trimeresurus lanna sp. nov. in life. Thailand: A Doi Inthanon NP, Chiangmai (mating adult couple); B, C Doi Phu Kha NP, Nan, Thailand; D Doi Suthep-Pui NP., Chiangmai (subadult female); E Doi Luang Mt., Chiang Rai (adult male); F Umphang, Tak (adult male). Laos: G, H Phongsaly (adult male and female, respectively). China: I Mengla, Xishuangbanna, Yunnan, China (adult male). Photos by: P. Pawangkhanant (A, D), T. Smith (B, E, F), R. Jaihan (C), T. Calame (G), P. Brakels (H), and J. Ming (I).

 
 
  Part of: Idiiatullina SS, Nguyen TV, Pawangkhanant P, Suwannapoom C, Chanhome L, Mirza ZA, David P, Vogel G, Poyarkov NA (2024) An integrative taxonomic revision of the Trimeresurus popeiorum group of pitvipers (Reptilia: Serpentes: Viperidae) with descriptions of two new species from the Indo-Burma Biodiversity Hotspot. Vertebrate Zoology 74: 303-342. https://doi.org/10.3897/vz.74.e113347