The purpose of this application, under Article 23.9.5 of the Code, is to conserve the specific name Heteropsis narcissus (Fabricius, 1798), a junior primary homonym of Hypochrysops narcissus (Fabricius, 1775). Both names are currently in use to designate separate and well-recognized species, belonging to two distinct genera in two butterfly families from different geographic regions, Heteropsis Westwood, 1850 (Nymphalidae from the Malagasy Region) and Hypochrysops C. & R. Felder, 1860 (Lycaenidae from the Australian region). As both specific names are currently widely used without confusion for taxa in different biogeographic regions, we request the Commission to rule that the name Papilio narcissus Fabricius, 1798 be conserved despite being a junior homonym of Papilio narcissus Fabricius, 1775.