The purpose of this application, under Article 23.9.3 of the Code, is to conserve the widely used name Siphonichnus Stanistreet, le Blanc Smith & Cadle, 1980 in its accustomed usage for an ichnogenus by giving it precedence over its senior subjective synonym, Opthalmichnium Pfeiffer, 1968, which has been used very rarely since it was first proposed. Planolites ophthalmoides Jessen, 1950, the type ichnospecies of Opthalmichnium, is a senior subjective synonym of Siphonichnus eccaensis Stanistreet, le Blanc Smith & Cadle, 1980, the type ichnospecies of Siphonichnus which has important applied uses in coal-bed geology and hydrocarbon exploration and production.

The purpose of this application, under Article 23.9.3 and Recommendation 23A of the Code, is to conserve the generic name Mesocrangon Zarenkov, 1965 for a group of boreal crangonid decapods. The genus name Mesocrangon Zarenkov, 1965 is in widespread and current use. This name is threatened by the unused senior primary homonym Mesocrangon Woodward, 1873. It is proposed that the name Mesocrangon Zarenkov, 1965 be conserved by the suppression of Mesocrangon Woodward, 1873.

The purposes of this application, under Articles 23.9.3 and 55.3 of the Code, are to conserve the usage of the family-group name stenoderini Pascoe, 1867 (Insecta, Coleoptera, cerambycidae) by giving it precedence over the senior but unused name syllitini Thomson, 1864, and to emend the family-group name stenoderini Selander, 1991 (Insecta, Coleoptera, meloidae), a junior homonym of stenoderini Pascoe, 1867, to stenoderaini, thereby removing the homonymy between the two names.

The purpose of this application, under Article 81.2.1 of the Code, is to conserve the specific name Apion longirostre Olivier, 1807 for the well-known apionid beetle (family apionidae) from western Palaearctic and Nearctic Regions by suppressing the name Apion longirostre Gravenhorst, 1807, senior primary homonym of the former.

The purpose of the present application, under Article 75.5 of the Code, is to conserve the name Lucilia purpurascens (Walker, 1836) in its accustomed usage for a common Neotropical blow fly by setting aside the existing unidentifiable female holotype and replacing it with a male neotype.

The purpose of this application, under Article 75.6 of the Code, is to conserve prevailing usage of the species names Calyptorhynchus baudinii Lear, 1832 and Calyptorhynchus latirostris Carnaby, 1948, long established for two endemic cockatoos in southwestern Australia (Lear, 1832). The whereabouts of the holotype of C. baudinii Lear, 1832 (Baudin's Cockatoo) was previously unknown and the identity of Lear's (1832) figure was established by Saunders (1974). The holotype has been located at the National Museums Liverpool in December 2010 and found to be conspecific with C. latirostris Carnaby, 1948 (Carnaby's Cockatoo). The resulting nomenclatural shift would destabilise the long established usage of these names and confound past and future references to the names in the literature. To conserve the long established use of baudinii Lear for the distinct long-billed, Baudin's Cockatoo, and to maintain latirostris Carnaby as the valid name for Carnaby's Cockatoo we propose that the type of baudinii Lear, be set aside and replaced with a neotype of a specimen of Baudin's Cockatoo.

The Commission has reinstated the availability of specific names proposed for Devonian ammonoids (Mollusca, Cephalopoda) by Sobolew (1914a, 1914b) widely used by palaeontologists and stratigraphers for almost a century even though these names were established in a work placed on the Official Index of Rejected and Invalid Works in Zoological Nomenclature by Direction 32 (following Opinion 132, in which the genus-group names (Gattungsbezeichnungen) established by Sobolew (1914a, 1914b) were considered to be formulas and not available generic names). The entries for Sobolew (1914a, 1914b) in the Official Index of Works in Zoology have been emended to record that the 88 species-group names established in these works are available from the original publications.

The Commission has replaced the holotype of Exechocentrus lancearius Simon, 1889, which was an incomplete specimen, with a neotype.

The Commission has confirmed the priority of the generic name Erythemis Hagen in Schott, 1861 for a group of common dragonflies from the New World, over Lepthemis Hagen, 1861.

The genus-group name Dodecatoma Westwood, 1849 has been conserved for a group of beetles (family phengodidae or rhagophthalmidae) by suppressing the unused senior homonym Dodecatoma Dufour, 1841, which was proposed for a group of stoneflies (family perlidae).

The Commission has conserved the specific name of the widespread West Palaearctic saprophagous fly Pteremis fenestralis (Fallén, 1820) (sphaeroceridae) in its current usage. The exant syntypes have been set aside and a male specimen from Sweden, which corresponds to the current usage of the name, has been designated as neotype.

The current usage of the generic name Atomosia Macquart, 1838 has been conserved for a well-established genus of robber flies. All type species fixations for Atomosia Macquart, 1838 prior to that of Atomosia incisuralis Macquart, 1838 by Coquillett (1910) have been set aside.

The Commssion has conserved the generic name Glossina Wiedemann, 1830 (Diptera, glossinidae), widely used for a well-established and medically important genus of tsetse flies. Under the plenary power precedence is given to Glossina Wiedemann, 1830 over its infrequently used senior subjective synonym Nemorhina Robineau-Desvoidy, 1830.

Under Article 80.4 of the Code, the publication date for the names Danaus, Heliconius, Nymphalis and Plebejus is corrected to Kluk (1780), rather than Kluk (1802) and the spelling of the butterfly genus name Plebejus confirmed. These names were formerly treated in Opinions 124, 278, 382 and 450.