The concealer moth genus invalidly named Thalamarchis by Meyrick in 1904 has been renamed Thalamarchella.
Thalamarchis is a genus of grass moths (family Crambidae). It is monotypic, with a single species Thalamarchis chalchorma. It is known from Sangir in the Malay Archipelago.
The wingspan is about 16 mm.