Ancylosis albicosta (Staudinger, 1870) (Figs 6, 14, 19) Myelois albicosta Staudinger, 1870: 202. Heterographis delimitella Ragonot, 1887: 247. Heterographis niveicostella Ragonot, 1901: 149. Ancylosis brunneonervella Roesler, 1970: 67. Ancylosis (Heterographis) albicosta (Staudinger): Roesler, 1973: 413. Diagnosis. Ancylosis albicosta can be distinguished by the forewing with a wide white costal band (Fig. 6). The male genitalia are characterized by the elongate subovate uncus, the narrow lingulate gnathos about 1/3 the length of the uncus, and the narrow elongate sacculus exceeding half the length of the valva. The female genitalia are characteristic of the uniformly slender ductus bursae, the posteriorly narrow and anteriorly roundly dilated corpus bursae with cone-shaped signa scattered from posterior 1/6 to anterior 1/6 and largely concentrated in the dilated area (Fig. 19). Material examined. [CHINA] Ningxia: 5♀, Habahu, Yanchi County, 1413–1527 m, 31.VII, 7.VIII.2023, leg. HH Li, H Sun, ZW Han & XW Niu, genitalia slide Nos. GLZ24304, GLZ24254, GLZ24255, GLZ25048; 2♂, Shapotou, Zhongwei, 1207–1671 m, 30.VII.2021, 24.VII.2024, leg. H Sun & ZL Tao, ZW Han & SY Tang, genitalia slide Nos. GLZ24341, GLZ25049. Distribution. China (Ningxia, Xinjiang), Afghanistan, Iran, Libya, Mongolia, North-west Kazakhstan, Romania, Russia, Turkey, Turkmenistan, Ukraine. Note. Roesler (1973) reported the distribution of Ancylosis albicosta in Xinjiang, China. We collected this species in Ningxia, China.

Published as part of Han, Zengwang, Gulzar, Abdukirim, Yu, Dian & Li, Houhun, 2025, Species of the genus Ancylosis Zeller, 1839 (Lepidoptera: Pyralidae: Phycitinae) from Ningxia Habahu Nature Reserves of China, pp. 41-50 in Zootaxa 5642 (1) on pages 44-45, DOI: 10.11646/zootaxa.5642.1.4, http://zenodo.org/record/15563416