taxonID	type	description	language	source
03AF87C9FFF90C4BAAB2E30AFE93AB38.taxon	description	The genus is small-sized moths (forewing length 2.9 – 6.9 mm), with the characteristic wing shape, narrowing toward the apex. The main characteristics of the genus are bright, metallic forewings, colorful and shiny wings generally (Koster 2015).	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFF90C4EAAB2E094FCFDACC6.taxon	description	urn: lsid: zoobank. org: act: 993 AB 6 B 5 - 4 A 67 - 4 C 2 C-A 5 B 3 - 1 D 3100 F 3 E 4 C 4 (Figures 1, 6)	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFF90C4EAAB2E094FCFDACC6.taxon	materials_examined	Type material. Holotype. [KOREA] 1 ♂, Is. Ulleung, [GB], 22 vi 2009 (N. H. Ahn), gen. slide no. HNUSEL- 5746 - coll. NIBR.	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFF90C4EAAB2E094FCFDACC6.taxon	diagnosis	Diagnosis. This species is similar to Cosmopterix oshimana Kuroko, 2015, but it can be distinguished by the wing pattern with somewhat thin three lines in basal area, slightly thin inner and outer costal tubercular spot, more deeply yellowish and wide transverse fascia with relatively short in vertical length. The shape of the right arm of uncus is beak-shaped, sclerotized, and sharpened toward apex.	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFF90C4EAAB2E094FCFDACC6.taxon	description	Description. Adult (Figure 1). Male. Wingspan 9.0 mm. Head fuscous, with silver scales scattered, with a white line above each eye; labial palpus pale gray tinged with white scales, curved up; antenna with blackish brown with two whitish rings on apex. Thorax covered fuscous scales with silvery inward lining of tegula, without medial line. Legs blackish brown with silver scales. Forewing bronzy-black, three lines short, arranged, 1 / 4 the length of basal half area; transverse fascia deep yellow, 1 / 2 the size of longitudinal width of wing, bright silver inner costal and dorsal tubercular spots connected, metallic, somewhat thick; outer costal and dorsal tubercular spots connected; without apical protrusion; apical line white, thin; cilia dark grayish. Hindwing dark grayish, sharpened apically; cilia dark grayish. Male genitalia (Figure 6). Right arm of uncus three-dimensional, beak-shaped, sharply toward apex, sclerotized. Anellus lobes relatively short, medial part semicircular, with long seta. Valva symmetrical, paddle-form, gradually expanded and rounded toward margin, softly curved at inner margin, apical margin rather curved up, longer than aedeagus, with numerous and long hairs. Aedeagus bottle-shaped, bulbous, winding side, distal part narrowed and long, chubby at medial part. Female. Unknown.	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFF90C4EAAB2E094FCFDACC6.taxon	distribution	Distribution. Korea (endemic).	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFF90C4EAAB2E094FCFDACC6.taxon	biology_ecology	Host plants. Unknown.	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFF90C4EAAB2E094FCFDACC6.taxon	etymology	Etymology. The specific name “ ulleungensis ” is derived from “ Ulleung ”, the name of Ulleung Island, the type locality of the species, which is located in the East Sea, Korea.	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFC0C4EAAB2E7FCFB7CAE83.taxon	description	(Figures 2, 7)	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFC0C4EAAB2E7FCFB7CAE83.taxon	diagnosis	Diagnosis. This species is similar to Cosmopterix lophatherella Kuroko, 2015, but it can be distinguished by the long subcostal line, rather wide and creamy yellowish transverse fascia, reaching 1 / 3 of the forewing in length (Figure 2). The shape of the right arm of uncus is a small bird’s bill-shaped, relatively large broad base, slightly concaved medially and sharpened terminally (Figure 7).	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFC0C4EAAB2E7FCFB7CAE83.taxon	materials_examined	Material examined. [JJ] 1 ♂, Ujinjebioreum, Seonheul-ri, Jocheon-eup, 8 vii 2015 (Bae, Park, Na, Jargal, Lee), gen. slide no. HNUSEL- 5744 - coll. NIBR. [GB] 2 ♂, Naribunji, Uleung-gun, 17 vii 2014 (Bae Y. S, Park B. S., Na S. M., Lee D. J.), gen. slide no. HNUSEL- 5491, 5745 - coll. HNUSEL.	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFC0C4EAAB2E7FCFB7CAE83.taxon	distribution	Distribution. Korea (new record), Japan.	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFC0C4EAAB2E7FCFB7CAE83.taxon	biology_ecology	Host plants. Oplismenus undulatifolius (Ard.) Roemer et Schultes [Poaceae] (Kuroko 2015).	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFC0C4EAAB2E23AFEEEAB9E.taxon	description	(Figures 3, 8)	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFC0C4EAAB2E23AFEEEAB9E.taxon	diagnosis	Diagnosis. This species is similar to Cosmopterix argentitegulella Sinev, 1985, but it can be distinguished by the pale yellowish transverse fascia, wide inner costal and dorsal tubercular spot (Figure 3). Anellus lobe is broadened beyond middle showing a paddle-shaped in outline. Valva is long and rounded along the terminal margin (Figure 8).	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFC0C4EAAB2E23AFEEEAB9E.taxon	materials_examined	Material examined. [GW] 1 ♂, Yanggu-eup, Yanggu-gun, 2 vii 2019 (B. K. Byun), gen. slide no. HNUSEL- 5693 - coll. NIBR. [GW] 1 ♂, Mt. Taebaek, 27 vi 1996 (Bae, Paek, Lee, An), gen. slide no. HNUSEL- 5534; 4 ♂, Geomnyongso Pond, Taebaek-si, 3 vii 2013 (Ju, Park, Na), gen. slide no. HNUSEL- 5535, 5536, 5537, 5798; 3 ♂, Jangsan condominium, 4 vii 2013 (Ju, Park, Na), gen. slide no. HNUSEL- 5538, 5539, 5540; 1 ♂, Samcheok-si, Hajang-myeon, 10 vii 2014 (B. K. Byun), gen. slide no. HNUSEL- 5492; [CB] 1 ♂, Mt. Sobae, Danyang-gun, 18 vi 2015 (Ju, Park, Kim), gen. slide no. HNUSEL- 5541; [GB] 1 ♂, Mt. Palgong, Dohak-dong, 3 vii 2014 (B. K. Byun) gen. slide no. HNUSEL- 5542 - coll. HNUSEL.	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFC0C4EAAB2E23AFEEEAB9E.taxon	distribution	Distribution. Korea (new record), Japan, Russia.	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFC0C4EAAB2E23AFEEEAB9E.taxon	biology_ecology	Host plants. Philadelphus satsumi Sieb., ex Lindl. et Paxton, P. tenuifolius Rupr. et Maxim. [Hydrangeaceae] (Kuroko 2015).	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFC0C4FAAB2E143FBFDACE2.taxon	description	(Figures 4, 9)	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFC0C4FAAB2E143FBFDACE2.taxon	diagnosis	Diagnosis. The subspecies differs from Cosmopterix scribaiella Zeller, 1850 in having the forewing tinged with olive and long apical protrusion (Figure 4). Valva is relatively narrowed apically (Figure 9).	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFC0C4FAAB2E143FBFDACE2.taxon	materials_examined	Material examined. [GW] 1 ♂, Seongsan-myeon, Gangneung-si, 19 viii 15 (Park, Na, Lee), gen. slide no. HNUSEL- 5748 - coll. NIBR; 1 ♂, Sindae-ri, Cheongi-myeon, Hoengseong, 9 viii 2018 (Y. S. Bae), gen. slide no. HNUSEL- 5747 - coll. HNUSEL.	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFC0C4FAAB2E143FBFDACE2.taxon	distribution	Distribution. Korea (new record), Japan.	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFC0C4FAAB2E143FBFDACE2.taxon	biology_ecology	Host plants. Phragmites australis (Cav.) Trin et Steud. [Poaceae] (Kuroko 2015).	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFD0C4FAAB2E7D8FDACAEAF.taxon	description	(Figures 5, 10)	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFD0C4FAAB2E7D8FDACAEAF.taxon	diagnosis	Diagnosis. This species is similar to Cosmopterix setariella Sinev, 1985, but it can be distinguished by the pale yellowish transverse fascia with a long apical protrusion (Figure 5). The shape of the right arm of the uncus is footshaped in outline with blunt termination. Anellus lobe is weakly falcate and densely setose along the distal portion, with the blunt-rounded apex. (Figure 10).	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFD0C4FAAB2E7D8FDACAEAF.taxon	materials_examined	Material examined. [GW] 1 ♂, Mt. Myeongseong, Cheolweon-gun, 20 vii 1999 (Baek, Lee, Oh) gen. slide no. HNUSEL- 5265 - coll. NIBR.	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFD0C4FAAB2E7D8FDACAEAF.taxon	distribution	Distribution. Korea (new record), Japan.	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
03AF87C9FFFD0C4FAAB2E7D8FDACAEAF.taxon	biology_ecology	Host plants. Calamagrostis hakonensis Franch. et Savat., C. arundinacea (Linn.) Roth var. brachyticha (Steud.) Hack. [Poaceae] (Kuroko 2015).	en	Kim, Ye-Seul, Kim, So-Yeon, Ahn, Neung-Ho, Song, Young-Gwang, Bae, Yang-Seop, Byun, Bong-Kyu (2026): Description of a new species and four newly recorded species of the genus Cosmopterix (Lepidoptera, Cosmopterigidae) from Korea. Zootaxa 5748 (3): 439-445, DOI: 10.11646/zootaxa.5748.3.9, URL: https://doi.org/10.11646/zootaxa.5748.3.9
