The article provides the description of a new species Catopta nupponeni sp. n. – a new representative of the autumn fauna in Central Asia (Lepidoptera: Cossidae). It differs from the closely related C. rocharva Sheljuzhko, 1943 by the following features: more light-colored fore wing, relatively narrow uncus, more expressed semicircular process on the costal side of the valvae, the poorly curved anal side of the valvae (in C. rocharva, this side is strongly crescent-curved), the abdominal surface of the phallus covered with tiny warty growths. The article is illustrated with the figures of the adult specimens and male genitalia of C. nupponeni sp. n. and similar C. rocharva Sheljuzhko, 1943 and a distribution map.