A new species of the genus Rhyparus Westwood, 1843 - Rhyparus myslenickorum sp. nov. from Laos is described and illustrated. Rhyparus burckhardti Paulian, 1989 is reported from Thailand and continental Asia for the first time. A key to the species of Rhyparus from Laos and its surrounding areas provided by Ochi, Kon & Kawahara (2018) is modified.