The purpose of this application, under Article 75.6, is to conserve the current usage of the name Euspira helicina (Brocchi, 1814) for a species of naticine gastropod from the Pliocene of Piacenza area, Italy. The lectotype of Euspira helicina (Brocchi, 1814) is not in taxonomic accord with the current usage of this name and exhibits all the characters of Tectonatica prietoi (Hidalgo, 1873) leading to considerable confusion. It is proposed that the previous type fixations for the species Euspira helicina (Brocchi, 1814) be set aside and a neotype consistent with the current usage be designated.

The purpose of this application, under Articles 13, 67.2.1 and 67.8 of the Code, is to conserve the name Dichochrysa Yang, 1991 for a widespread and speciose genus of Old and New World green lacewings. The name Dichochrysa is a replacement name for Navasius Yang & Yang, 1990, which is a junior homonym of Navasius Esben-Petersen, 1936, but Dichochrysa is unavailable from its original publication because it is based on the unavailable specific name Navasius eumorphus Yang & Yang, 1990. It is proposed to conserve the name Dichochrysa by ruling that the name Navasius eumorphus is available from its publication by Yang & Yang (1990).

The purpose of this application, under Article 69 of the Code, is to fix the type species of the delphacid planthopper genus Liburnia Stål, 1866 as Embolophora monoceros Stål, 1855. Liburnia has had three type species designated, all of which are currently type species of other genera. Fixation of Embolophora monoceros Stål, 1855 as a type species for Liburnia will make Liburnia Stål, 1866 a junior objective synonym of Embolophora Stål, 1853, which is necessary to alleviate past confusion and prevent future reinterpretation of the genus.

The purpose of this application, under Articles 10.1, 13.1 and 81.1 of the Code, is to stabilise the usage of five generic names of Neotropical butterflies by ruling that they are available from their original descriptions. D'Abrera (2001) and D'Abrera & Bálint (2001) proposed eight generic names in the lycaenidae [Leach], [1815] in which they differentiated the type species, not the genus. The availability of some of these names has subsequently been interpreted differently by different authors. One of these generic names, Salazaria D'Abrera & Bálint, 2001, is widely used on websites. A second, Balintus D'Abrera, 2001, has been treated as a nomenclaturally and taxonomically valid genus. A third, Gulliveria D'Abrera & Bálint, 2001, is a junior homonym that was replaced with Megathecla Robbins, 2002 and Gullicaena Bálint, 2002. However, differentiating the type species does not satisfy the requirements of Article 13.1 of the Code, so all these names are unavailable. To promote nomenclatural stability, the Commission is requested to rule that the generic names Balintus D'Abrera, 2001, Gullicaena Bálint, 2002, Gulliveria D'Abrera & Bálint, 2001, Megathecla Robbins, 2002 and Salazaria D'Abrera & Bálint, 2001 are available and place Balintus D'Abrera, 2001, Salazaria D'Abrera & Bálint, 2001, Megathecla Robbins, 2002 and Gullicaena Bálint, 2002 on the Official List of Generic Names in Zoology, and to place Annamaria D'Abrera & Bálint, 2001, Chopinia D'Abrera, 2001, Gulliveria D'Abrera & Bálint, 2001, Lucilda D'Abrera & Bálint, 2001, Pedusa D'Abrera, 2001 and Riojana D'Abrera & Bálint, 2001 on the Official Index of Rejected and Invalid Generic Names in Zoology.

The purpose of this application, under Article 23.9.3 of the Code, is to conserve the name Delognatha Lacordaire, 1859 for a tenebrionid genus from the Neotropical Region. This name is a junior homonym of the unused name Delognatha Agassiz, 1846. Delognatha Lacordaire, 1859 has been used as valid since its description, while Delognatha Agassiz, 1846 has not been used as valid after it was established other than by two authors more than 150 years ago. It is proposed to conserve the name Delognatha Lacordaire, 1859 by suppression of the name Delognatha Agassiz, 1846.

The purpose of this application, under Article 29 of the Code, is to emend the family-group name ancylini Michener, 1944 (Insecta, Hymenoptera), a junior homonym of ancylini Rafinesque, 1815 (Mollusca, Gastropoda), thereby removing the homonymy between the two names. It is proposed that the stem of the generic name Ancyla Lepeletier de Saint Fargeau, 1841, on which the hymenopteran family-group name is based, be emended to give ancylaini, while leaving the molluscan name (based on Ancylus Müller, 1774) unaltered.

The purpose of this application, under Articles 23.9 and 81.2 of the Code, is to conserve the generic name Pseudobagrus Bleeker, 1858 for a group of bagrid catfishes (order Siluriformes) by suppressing the senior name Tachysurus La Cepède, 1803. The identity of Tachysurus remained ambiguous until the recent designation of a neotype for Tachysurus sinensis La Cepède, 1803. The designated neotype is a specimen that had until that point been identified as Pseudobagrus fulvidraco (Richardson, 1845). This neotype designation made Tachysurus a senior subjective synonym of Pseudobagrus. The use of the name Tachysurus La Cepède, 1803 in reference to Southeast Asian freshwater bagrid catfishes currently referred to Pseudobagrus would create significant confusion in the literature. It is proposed that the name Tachysurus La Cepède, 1803 be suppressed.

The purpose of this application, under Articles 23.6, 23.12 and 81 of the Code, is to conserve the name Anolis chrysolepis Duméril & Bibron, 1837, for a polytypic species of biogeographic importance. An older, less-used name Anolis nitens (Wagler, 1830), was rejected in a major revision (Vanzolini & Williams, 1970) as a name ‘of uncertain application [and] uncertain geographical provenance’, the first term being equivalent to nomen dubium as defined in the Code. The specific name nitens was published with a 4-line description in the monotypic genus Draconura; the type locality (‘America’) is vague and the holotype is unknown. It is indeed a nomen dubium that cannot unambiguously be assigned to any known lizard, although the possibility that the brief color description might prove diagnostic of a species waiting rediscovery cannot be rejected. Article 23.3.6 of the Code allows authors to use the junior name Anolis chrysolepis as valid. However, although never in prevailing usage historically, Anolis nitens nonetheless remains in competing use because of prior (and arguable) interpretation of Article 23. It is a major source of instability. It is proposed that the name Anolis chrysolepis Duméril & Bibron, 1837, be given precedence over Draconura nitens Wagler, 1830, whenever the two are considered to be synonyms.

The Commission has conserved the generic name Eatoniella Dall, 1876 and the family-group name eatoniellidae Ponder, 1965 for a species-rich group of small marine gastropods from the southern hemisphere by suppression of their senior subjective synonyms Paludestrina d'Orbigny, 1840 and paludestrinidae Newton, 1891.

The Commission has conserved the generic names Gigantopecten Rovereto, 1899 and Lissochlamys Sacco, 1897 for two genera of common Neogene pectinid bivalves by declaring that the names Macrochlamis Sacco, 1897 and Lissochlamis Sacco, 1897 are incorrect original spellings of Macrochlamys and Lissochlamys, respectively.

The Commission has ruled that the current usage of the generic names Etisus H. Milne Edwards, 1834 and Chlorodiella Rathbun, 1897 for two genera of brachyuran crabs is conserved by suppressing the generic name Clorodius A.G. Desmarest, 1823, and that the type species of the genus Chlorodiella Rathbun, 1897 is Cancer niger Forskål, 1775.

The Commission has ruled that the specific name Lithocolletis oxyacanthae Frey, 1855 is conserved for a European leaf-mining moth by giving it precedence over the senior synonym Lithocolletis pomonella Zeller, 1846.

The Commission has conserved the usage of the names orthocladiinae Kieffer, 1911 and Orthocladius van der Wulp, 1874 for a well-known group of non-biting midges by designation of Chironomus oblidens Walker, 1856 as the type species.

The Commission has ruled that the specific name Hydroporus discretus Fairmaire & Brisout de Barneville, 1859 is conserved for a common species of water beetle by suppression of the senior synonym Hydroporus neuter Fairmaire & Laboulbène, 1855.

The Commission has ruled that the generic name Brachyplatystoma Bleeker, 1862 for a genus of South American freshwater catfishes is conserved by giving it precedence over two senior subjective synonyms, Piratinga Bleeker, 1858 and Piramutana Bleeker, 1858.

The Commission has set aside all previous fixations of type species for the genus Mystus Scopoli, 1777, before that by Jordan & Everman (1917), thus conserving current usage of the names Mystus Scopoli, 1777 and Polydorus Bleeker, 1862 for two genera of bagrid and doradid catfishes.

The Commission has conserved the generic name Atractus Wagler, 1828 for a group of common Neotropical snakes by suppressing its senior objective synonym Brachyura Kuhl & van Hasselt, 1822. In addition, the name Atractus trilineatus Wagler, 1828, the specific name of the type species of Atractus, has been given precedence over its senior objective synonym Brachyorrhos kuhli Schlegel, 1826.