The purpose of this application, under Article 23.9.3 of the Code, is to conserve the widely used generic name Eusparassus Simon, 1903 for a well-known huntsman spider genus from Africa and Eurasia currently with 30 known valid species. The name is threatened by its little-used senior synonym Cercetius Simon, 1902. Simon (1902) established the name Cercetius for a monotypic taxon based on a juvenile specimen of C. perezi Simon, 1902. The generic name has never been used as valid except in catalogues and other lists. The discovery of adult specimens of C. perezi in the type locality and nearby regions supports the synonymy of Cercetius with Eusparassus. The putative junior synonym Eusparassus is however a longaccepted name and it should be conserved to maintain stability of nomenclature in this taxonomic group.

The purpose of this application, under Articles 75.6 and 81 of the Code, is to conserve the prevailing usage of the generic name Ecdyonurus Eaton, 1868 and the specific name Ecdyonurus venosus (Fabricius, 1775), by setting aside the existing name-bearing type of Ecdyonurus venosus and designating a neotype. The existing name-bearing type of E. venosus, type species of Ecdyonurus Eaton, 1868, is not in accord with the current use of the name Ecdyonurus venosus sensu auct.

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.

The purpose of this application, under Articles 23.9.3 and 81 of the Code, is to conserve the name Dibolia schillingii (Letzner, 1847), for a flea-beetle species (chrysomelidae, alticinae or galerucinae, alticini) widespread in western Palaearctic, by giving it precedence over the unused older name Dibolia metallica (Motschulsky, 1845), whenever these names are considered to be synonyms.

The purpose of this application, under Articles 70.2 and 23.9.3 of the Code, is to conserve the current usage of the generic name Coenosia Meigen, 1826, for a well-established genus of muscid flies. The type species of Coenosia has long been assumed to be Musca tigrina Fabricius, 1775. However, the correct type species is Musca fungorum De Geer, 1776, which is currently recognized as a valid species of Mycophaga Rondani, 1856, a genus of anthomyiid flies. Acceptance of Musca fungorum De Geer, 1776 as the type species of Coenosia would change the current concept of that genus to that of the anthomyiid Mycophaga, and the current muscid generic name Coenosia would become Caricea Robineau-Desvoidy, 1830 as the next available name. To avoid the nomenclatural instability that would result from following the Principle of Priority, it is proposed that all type fixations for Coenosia Meigen, 1826 prior to that of Musca tigrina Fabricius, 1775 by Westwood (1840) be set aside. In addition, it was noted that, because the genus-group names Coenosia Meigen, 1826 and Limosia Robineau-Desvoidy, 1830 have long been considered subjective synonyms of each other and are the type genera for respective family-group names, if the Principle of Priority were followed, the family-group name limosiinae Robineau-Desvoidy, 1830 would become the senior synonym of coenosiinae Verrall, 1888. To avoid the potential instability resulting from acceptance of the relative priority of these two family-group names, it is proposed that precedence be given to coenosiinae over limosiinae whenever the two are placed in the same family group.

The purpose of this application, under Articles 80.7.2 and 81.1 of the Code, is to reinstate as available the generic names Thyone Oken, 1815 and Psolus Oken, 1815, which were introduced by Oken (1815) in a work that was rejected by the Commission in Opinion 417 because it was not consistently binominal. The names acquired availability from subsequent use by Lesson (1830) with concepts that differ completely from Oken's, and from the currently accepted usage of these names. Thyone and Psolus are among the most frequently used generic names in the Holothuroidea. It is requested that the Commission reinstate the availability of the names Thyone Oken, 1815 and Psolus Oken, 1815 published in the rejected work for the sake of nomenclatural stability.

The Commission has not supported the request to give the name charilaidae Dirsh, 1953, for a group of African grasshoppers, precedence over the senior name pamphagodidae I. Bolívar, 1916.

The Commission has conserved the usage of the specific name Cryptotermes dudleyi Banks, 1918 for an important economic termite pest species by giving the specific name dudleyi precedence over parasita whenever the two are considered to be synonyms.

The Commission has removed the homonymy between two family-group names, coryninae of Hymenoptera (Insecta) and corynidae of Anthoathecata (Cnidaria) by adopting the Greek genitive form Corynid- of the sawfly genus Corynis Thunberg, 1789 as the stem of the corresponding family-group name, giving corynidinae Benson, 1938. corynidae Johnston, 1836, a name for hydrozoans, remains unchanged.

The Commission has conserved the name Apis armbrusteri Zeuner, 1931 for a species of fossil honey bee occurring in the Miocene fauna of southwestern Germany by designating a neotype.

The Commission has conserved the usage of the specific names Oligosoma aeneum (Girard, 1857) and Oligosoma ornatum (Gray 1843), widely used for species of New Zealand skinks (copper skink and ornate skink), by setting aside the existing holotype of Tiliqua ornata Gray, 1843 and designating a neotype.