A taxonomic study of Gandaritis flavomacularia and related species (Lepidoptera, Geometridae), with description of a new species from western China

The taxonomic status of <i>Gandaritis flavomacularia</i> has recently undergone revision. This study evaluates the validity of <i>G. flavomacularia</i> based on both morphological and molecular evidence. Furthermore, a new, closely related species, <i>Gandaritis stueningi</i> Wen & Cheng, <b>sp. nov.</b> from Sichuan, China, is described, supported by both molecular and morphological data. Key morphological characters, including the male and female genitalia, are illustrated and compared with those of three related species.