Abstract
Four new species of Liphistius belonging to the birmanicus species group are described from Myanmar based on both sexes: L. kalaw Zhan & Xu, sp. nov. (♂♀), L. kanpetlet Zhan & Xu, sp. nov. (♂♀), L. nawngau Zhan & Xu, sp. nov. (♂♀) and L. rostratus Zhan & Xu, sp. nov. (♂♀). Currently, Myanmar stands as the westernmost country where Liphistius is distributed, with the new species L. kanpetletsp. nov. being found in the westernmost region of Myanmar.