Description of a new species of the genus Polycaena Staudinger, 1886 (Lepidoptera, Riodinidae) from China with designation of lectotype of Polycaena lua Grum-Grshimailo, 1891 Author Krupitsky, Anatoly V. 0000-0002-6095-3570 Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninsky pr. 33, Moscow, 119071, Russia nephrurus@yandex.ru Author Shapoval, Nazar A. 0000-0003-4735-2209 nazaret@bk.ru Author Shapoval, Galina N. 0000-0003-4735-2209 Institute of Biology and Biotechnology, Altai State University, Lenina Ave. 61, Barnaul, 656049, Russia nazaret@bk.ru text Zootaxa 2024 2024-06-17 5471 1 113 124 http://dx.doi.org/10.11646/zootaxa.5471.1.7 journal article 298735 10.11646/zootaxa.5471.1.7 8c8d8d9f-2889-4d58-9d2b-99c96641866b 1175-5326 12189874 2EE32BA4-E335-4693-8DF5-93527B939AF9 Polycaena lua Grum-Grshimailo, 1891 ( Figs 14–15 ) Polycaena lua — Grum-Grshimailo, 1891: 454 . This species was described from “Sinin-Schan” by Grigory Yefimovich Grum-Grshimailo , a famous Russian lepidopterist and explorer of Central Asia. The description was based on an unstated number of specimens collected during his expedition to the Eastern Tian-Shan and the Nanshan (now known as the Qilian Mountains ) in 1889– 1890. Photos of the type specimens of P. lua have never been published. A series containing three syntypes of this species ( 2 ♂ , 1 ♀ ) received by the German lepidopterist Otto Staudinger from Grum-Grshimailo were found in the collection of the Museum für Naturkunde , Berlin , Germany (MfNB), by Nekrutenko (1998) . These specimens bear the date labels “27. VI .90” and were labelled as syntypes of P. lua by Nekrutenko, but the lectotype was not designated. FIGURES 14–15. Polycaena lua Grum-Grshimailo, 1891 , type specimens (dorsal view left, ventral view right) and their labels: 14—lectotype, male; 15—paralectotype, female. During an examination of Polycaena specimens deposited in the collection of ZISP, we found a series ( 11 ♂ , 1 ♀ ) of P. lua bearing small labels with the same date “27.VI.90” as in the abovementioned syntypes or “26.VI.90”, geographic labels “Gui Dui Scha” (or a Cyrillic version of it, “Гуй Дуй ША”) and Grum-Grshimailo’s labels signed “Gr. Gr.”. These specimens certainly belong to the type series of P. lua . One of the males is hereby designated lectotype according to Article 74.1 of ICZN (1999) . The lectotype bears the following labels: small date label “27. VI.[18]90” (on brown faded paper, handwritten by Grum-Grshimailo), small locality label “Гуй Дуй ША [Gui Dui Sha]” (on brown faded paper, handwritten by Grum-Grshimailo), label “Gr. Gr” (on green paper with black printed frame, handwritten by Grum-Grshimailo), printed label “Кол. Вел. Кн. / НиколАЯ / МихАиловичА [Collection of Grand Duke Nikolas Mikhailovich]” (on yellowish paper), printed label “ LECTOTYPE ♂ / Polycaena lua / Grum-Grshimailo, 1891 / Krupitsky, N. Shapoval & / G. Shapoval des., 2024” (on red paper) ( Fig. 14 ). The remaining syntypes ( 10 ♂ and 1 ♀ from ZISP, and 2 ♂ and 1 ♀ from MfNB mentioned by Nekrutenko 1998 ) thus become paralectotypes (the ZISP specimens are labelled accordingly). The type locality mentioned in the description, “in montibus Sinin-Schan”, refers to the Laji Shan Range, eastern part of the Qilian Mountains between the Huangshui River and the Yellow River. According to Grieshuber & Churkin (2003) , the locality “Gui Dui Scha” “is probably the valley where the present road from Xining to Agong ( 36°07’N 101°34’E ) runs” ( Grieshuber & Churkin 2003: 235 ). It is noteworthy that the map supplementing the paper by Grieshuber & Churkin (2003) is rather inaccurate. The same is true of the coordinates given by them for some localities, e.g., the famous Kumbum Monastery. Based on the information from Grum-Grshimailo (1899) and Grieshuber & Churkin (2003) , we specify the locality “Gui Dui Scha”: China , Qinghai Province , Xining, Huangzhong District, Guidexia ( ÑDZ¨ ), ca. 36°22’26”N 101°35’16.6”E .