A taxonomic note on Erionota acroleuca (Wood-Mason & de Nicéville, 1881) stat. rest. (Lepidoptera: Hesperiidae) Author Xue, Guo-Xi Author Lo, Yik Fui Philip text Zootaxa 2015 3926 3 445 447 journal article 10.11646/zootaxa.3926.3.9 39b01cba-638e-45d5-8fbd-c5dd14bbda8d 1175-5326 246016 B63B9EAA-9C82-4258-BFD6-CBAD91BF68A4 Erionota acroleuca (Wood-Mason & de Nicéville, 1881), stat. rest. Telegonus acroleucus Wood-Mason & de Nicéville, 1881(Aug.): 143 (original description). Hesperia hiraca Moore, 1881 (Sept.) : 313 (original description). Hesperia acroleuca : Wood-Mason & de Nicéville ( 1881 Dec. : 260) (synonyms, description). Teligonus lara Swinhoe, 1890 : 365 (original description). Erionota acroleuca : Watson (1891: 107) (name list); Evans (1941: 159) (description, synonyms, subspecies); Evans (1949: 327) (description, synonyms, subspecies). Erionota thrax acroleuca : Evans (1927: 440) (description, distribution, synonyms); Evans (1932: 373) (description, distribution, synonyms); Khatri (1993: 184) (name list). Erionota hiraca : de Jong & Treadaway (1992: 134) (description); de Jong & Treadaway (2007: 47) (nomenclature, distribution, variation); Ek-Amnuay et al . (2007 : 16 ) (nomenclature); de Jong & Treadaway (2008: 10) (distribution); Mohanraj & Veenakumari (2011: 6) (checklist, distribution). Remarks. The date of publication printed on the paper which originally described acroleuca is “August, 1881” (Wood- Mason & de Nicéville 1881 Aug. ). While Bridges (1988) recorded the publication date of this name as October, 1881, and that of hiraca as September, 1881. According to this record, de Jong & Treadaway (1992) shifted the priority from acroleuca to hiraca , this treatment continued in their subsequent works (de Jong & Treadaway 2007 , 2008 ), and was also followed by others (e.g. Devyatkin & Monastyrskii 1999 ; Kitamura 2003 ; Ek-Amnuay et al . 2007 ; Mohanraj & Veenakumari 2011 ). But: 1) in a paper issued on 21 December , 1881, Wood-Mason & de Nicéville described acroleucus again in a more detailed way under the name “ Hesperia acroleuca ”, they even gave a one-month priority of their name acroleucus (August) over Moore’s hiraca (September) . 2) the “letter code” assigned to acroleucus in Bridges (1988 , 1994 ) is “a”, meaning “available valid species name”, and that to hiraca is “c” meaning “synonym”; the name hiraca is clearly recorded as “SS: acroleucus (Wood-Mason & de Nicéville), 1881” with a note “Close, September versus August”, indicating that hiraca is a junior synonym of acroleucus because of one month behind in publication. 3 ) The library of the Natural History Museum in London confirmed that the original paper of acroleucus was published in August 1881 . Thus, according to Chapter 5 (Articles 21 and 22) of the International Code of Zoological Nomenclature (Fourth Edition), the date of publication of the original paper introducing acroleuca should be accepted as [ 31 August ] 1881. The nomenclatural act by de Jong & Treadaway (1992) , which has caused a misapplication of hiraca and threatened the stability of acroleuca , should be corrected. Therefore, we restore acroleuca to a valid name, and submerge hiraca herein.