TL;DR: The number of known species in the eastern North American genus Argyrostrotis is reduced from 10 to six through synonymy, with illustrations of the adults and genitalia of each species included.
Abstract: After examining the type specimens of species in the eastern North American genus Argyrostrotis the number of known species in the genus is reduced from 10 to six through synonymy. A key to species is included along with illustrations of the adults and genitalia of each species. Three Neotropical species currently included in Argyrostrotis (Argyrostrotis eurysaces Schaus, 1914; Argyrostrotis quadrata Dognin, 1910; and Celiptera surrufula Dyar, 1913) are transferred to other genera as Argyrosticta eurysaces (Schaus, 1914), comb. n. [Noctuidae: Bagisarinae], Heterochroma quadrata (Dognin, 1910), comb. n. [Noctuidae: Amphipyrinae], and Ptichodis surrufula (Dyar, 1913), comb. n. [Erebidae: Erebinae: Euclidiini].
TL;DR: A new species of Callistege Hubner, [1823] (Lepidoptera, Erebidae, Erebinae, Euclidiini) is described from Cuatrocienegas Protected Area and Biosphere Preserve in Coahuila, Mexico as mentioned in this paper.
Abstract: A new species of Callistege Hubner, [1823] (Lepidoptera, Erebidae, Erebinae, Euclidiini) is described from Cuatrocienegas Protected Area and Biosphere Preserve in Coahuila, Mexico. Adult male and female moths are illustrated, including genitalia. Callistege clara Homziak & Metzler, sp. nov. is one of 27 new species of insects discovered during an inventory survey of arthropods of White Sands National Monument, USA, and Cuatrocienegas Protected Area (Mexico), funded by the U.S. National Park Service. The Cuatrocienegas Basin is known for high endemism of aquatic and wetland biota within the Chihuahuan Desert. Callistege clara Homziak & Metzler, sp. nov. was found in a wetland environment.