delicatissima, Dallia Smitt [F. A.] in Nordenskiöld 1881:64 [Vegas färd kring Asien och Europa; ref. 19816] Jinretlen, on Chukotka Peninsula (and Port Clarence, Alaska, U.S.A.). Syntypes: ?NMW 75344 (1), 78726 (1), 81031 (?), 59288 (?); NRM 9577-78 (12, 2). Also listed as Umbra delicatissima in Smitt 1882:1 [ref. 33976]. •Synonym of Dallia pectoralis Bean 1880 -- (Mecklenburg et al. 2002:146 [ref. 25968], Dyldin et al. 2020:88 [ref. 37569]). •Valid as Dallia delicatissima Smitt 1881 -- (Chereshnev 1996:601 [ref. 24659], Reshetnikov et al. 1997:734 [ref. 24702], Reshetnikov 1998:53 [ref. 23570], Chereshnev et al. 2001:48 [ref. 26736], Crossman & Ráb 2001:860 [ref. 25475], Bogutskaya et al. 2001:45 [ref. 26178], Bogutskaya & Naseka 2004:125 [ref. 28183], Dyldin et al. 2024:905 [ref. 41701]). Current status: Valid as Dallia delicatissima Smitt 1881. Esocidae: Dalliinae. Distribution: East Asia: Chukotka Peninsula (Russia) endemic. Habitat: freshwater.