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Notopleura Liebau, 1991 (Crustacea, Ostracoda, Hemicytheridae) established as a subgenus of Thaerocythere Hazel, 1967 with the type species Thaerocythere (Notopleura) lusitanica Liebau, 1991, is a younger homonym of Notopleura Krauss, 1902 (Insecta, Orthoptera, Acrididae). It is here replaced by the new name Martiniportella, which refers to the harbour of São Martinho do Porto (Portugal), where the extant specimens came from.

We present an updated, subjective list of the extant, non-marine ostracod genera and species of the world, with their distributions in the major zoogeographical regions, as well as a list of the genera in their present hierarchical taxonomic positions. The list includes all taxa described and taxonomic alterations made up to 1 July 2018. Taxonomic changes include 17 new combinations, 5 new names, 1 emended specific name and 11 new synonymies (1 tribe, 4 genera, 6 species). Taking into account the recognized synonymies, there are presently 2330 subjective species of non-marine ostracods in 270 genera. The most diverse family in non-marine habitats is the Cyprididae, comprising 43.2% of all species, followed by the Candonidae (29.0%), Entocytheridae (9.1%) and the Limnocytheridae (7.0%). An additional 13 families comprise the remaining 11.8% of described species. The Palaearctic zoogeographical region has the greatest number of described species (799), followed by the Afrotropical region with 453 species and the Nearctic region with 439 species. The Australasian and Neotropical regions each have 328 and 333 recorded species, respectively, while the Oriental region has 271. The vast majority of non-marine ostracods (89.8%) are endemic to one zoogeographical region, while only six species are found in six or more regions. We also present an additional list with ‘uncertain species’, which have neither been redescribed nor re-assessed since 1912, and which are excluded from the main list; a list of taxonomic changes presented in the present paper; a table with the number of species and % per family; and a table with numbers of new species described in the 20-year period between 1998 and 2017 per zoogeographical region. Two figures visualize the total number of species and endemic species per zoogeographical region, and the numbers of new species descriptions per decade for all families and the three largest families since 1770, respectively.

Five new genera of cytheracean Ostracoda are described from the S.W. Atlantic area. They are: Austrocytheridea and Papillosacythere, which belong to the Cytherideinae and Neocytherideinae respectively, and Austroaurila. Falklandia, and Meridionalicythere, which are all members of the Hemicytheridae.

Eleven species of family Hemicytheridae and seven of the family Thaerocytheridae are described. Together they comprise 14% of the total Recent ostracod fauna described from the Solomon Islands. In the main the hemicytherids are much more endemic than the thaerocytherids. Three new species have been recorded only from the Solomon Islands, and three species of Caudites, held in open nomenclature due to their rarity, are also probably endemic to the islands. Another three new species have been recorded only from Java and one species of Mimicocythere gen. et sp. nov. also occurs in Australia. The six new species described and illustrated are: Ambostracon (A.) micropapillatum, A. (A.) micromaculata, Caudites shortlandensis, ?C. atypicus, Mutilus dissimilis ssp. nov. and Mimicocythere pseudomelobesoides gen. et sp. nov. Only one of the hemicytherids, Caudites javana Kingma, occurs throughout the Indo-Pacific. It is the Thaerocytheridae, however, that are almost pandemic in tropical regions, with Tenedocythere deltoides and T. transoceanica being distributed particularly widely. A new species of the rare genus Neobuntonia, N. subalata sp. nov., only the second modern species to be described, is also illustrated.

This study is based on 62 samples of phytal and bottom sediments collected along rocky beaches (< 3 m water depth) of the central and northern coasts of the state of Santa Catarina (26º10'/27º50'S – 48º26'/48º40'W), southern Brazil. Living and dead ostracodes distributed among 16 families were recovered. In this paper is emphasized one new hemicytherid genus and species that is described and richly illustrated: Auricythere sublitoralis gen. nov. and sp. nov. Some ecological and zoogeographical aspects of this new ostracode are briefly discussed. Foram coletadas 62 amostras de sedimentos de fundo e fital no infralitoral rochoso superior (< 3 m de profundidade) das regiões central e norte do Estado de Santa Catarina (26º10'/27º50'S – 48º26'/48º40'W). Os ostracodes vivos e mortos recuperados estão distribuídos em 16 famílias, destacando-se, neste trabalho, um novo gênero e espécie de Hemicytheridae ricamente descrito e ilustrado: Auricythere sublitoralis gen. nov., sp. nov. Alguns aspectos ecológicos e zoogeográficos deste novo táxon são brevemente discutidos.

The present study is a further contribution to the systematic knowledge of the shallow water marine ostracodes from the Brazilian oceanic islands. A total of 14 species belonging to 10 genera and eight families is herein identified. One new genus and species are described and illustrated: Berguecythere insularis gen. nov., sp. nov. In addition to this new taxon, the abundant species Loxocorniculum tricornatum Krutak, 1971, widely distributed in recent sediments in the Gulf of Mexico, Caribbean, north and northeast of Brazil and the Rocas Atoll, along with the cosmopolitan tropical ostracode Triebelina sertata Triebel, 1948, were also identified at specific level. The remaining 11 species were left at the genus level, and should provide new species. Ecological, zoo- and paleozoogeographical aspects were also briefly discussed. O presente estudo é uma contribuição para o conhecimento da sistemática dos ostracodes marinhos rasos das ilhas oceânicas brasileiras. Um total de 14 espécies pertencentes a 10 gêneros e oito famílias é aqui identificado. Um novo gênero e espécie são descritos e ilustrados: Berguecythere insularis gen. nov., sp. nov. Além desse novo táxon, foram também identificados Loxocorniculum tricornatum Krutak, 1971, espécie abundante amplamente distribuída em sedimentos recentes do Golfo do México, Caribe, norte e nordeste do Brasil e no Atol das Rocas, e o ostracode cosmopolita tropical Triebelina sertata Triebel, 1948. As 11 espécies restantes foram deixadas em nível de gênero e devem fornecer novas espécies. Aspectos ecológicos e zoo- e paleozoogeográficos também foram brevemente discutidos.

The ostracod fauna from the outcroup “la faluniere” of Grignon (Lutetian, Paris Basin): stratigraphical implications. The rehabilitation of the outcroup “la faluniere” of Grignon (shell marl pit) allowed for the first time to take an almost complete section of the Paris Basin Middle Lutetian under its uncimented facies. It was the opportunity to undertake sedimentological and paleontological studies. This publication presents results of the ostracode study. More than 6000 valves or carapaces were collected and 87 species was distinguished. Three new species are described : Paracypris keiji n. sp., Neocytherideis labyrinthoidea n. sp. and Grinioneis pachycosta n. sp. The ostracodes vertical distribution in the faluns of Grignon is probably without stratigraphical signification. On the contrary, the Lutetian ostracodes associations are characteristic, as well in comparison with those of the Ypresian that with those of the Auversian or of the Barton beds. Specific diversification reflects that of th...

The variability of the reticulum pattern, ornamentation and outline of the Urocythereis populations of the La Strea Bay is analysed. The results show that the shell features of the form U. distinguenda (Neviani, 1928) (= U. oblonga Brady, 1866) have to be included within the high variability range of U. margaritifera (G.W. Müller, 1894). Consequently, it is suggested that in the upper infralittoral waters of the inlet two (and not three, as stated in previous investigations) species of the genus Urocythereis presently live. A second form, displaying a relatively low variability, is described as a new species, U. ilariae sp. nov. © 2017, Museum National d'Histoire Naturelle. All rights reserved.

We conducted a comprehensive systematic revision of deep-sea Trachyleberididae, Thaerocytheridae, and Hemicytheridae (Ostracoda, Crustacea) covering almost all Cenozoic genera using high-resolution scanning electron microscopy. Trachyleberididae, our main focus, is one of the most diverse and abundant ostracod families, but its genus-level taxonomy is still confusing. Approximately 700 specimens from 177 species from 47 genera were examined. The studied samples range in age from the Cretaceous to the present day and cover all major oceans in the world, including the Atlantic, Pacific, Indian, and Southern Oceans, the Mediterranean Sea, and the Gulf of Mexico. Five new genera and 45 new species are described: Bensonodutoitella gen. nov., Hornibrookoleberis gen. nov., Croninocythereis gen. nov., Bensonocosta gen. nov., Ryugucivis gen. nov., Abyssocythere scotti sp. nov., Ambocythere tomocaudata sp. nov., Ambocythere whatleyi sp. nov., Ambocythere hyakunome sp. nov., Atlanticythere bensoni sp. nov., Atlanticythere oculi sp. nov., Dutoitella cronini sp. nov., Dutoitella symmetrica sp. nov., Dutoitella mazziniae sp. nov., Dutoitella paradinglei sp. nov., Dutoitella ayressi sp. nov., Dutoitella colesi sp. nov., Dutoitella spinosa sp. nov., Dutoitella whatleyi sp. nov., Dutoitella atlantiformis sp. nov., Bensonodutoitella bicornigeri sp. nov., Oligocythereis sylvesterbradleyi sp. nov., Cythereis guerneti sp. nov., Cythereis johnnealei sp. nov., Cythereis parajohnnealei sp. nov., Cythereis neoanteplana sp. nov., Cythereis sylvesterbradleyi sp. nov., Cythereis bensoni sp. nov., Cythereis purii sp. nov., Cythereis fungina sp. nov.,Cythereis tomcronini sp. nov., Cythereis legitimoformis sp. nov., Cythereis richardbensoni sp. nov., Cythereis dinglei sp.nov., Cythereis ovi sp. nov., Cythereis swansoni sp. nov., Croninocythereis tridentiferi sp. nov., Croninocythereis cronini sp. nov., Bensonocosta bensoni sp. nov., Ayressoleberis colesi sp. nov., Leguminocythereis? buzasi sp. nov., Legitimocythere tomi sp. nov., Ryugucivis jablonskii sp. nov., Ryugucivis acuminata sp. nov., Ryugucivis obtusa sp. nov., Phacorhabdotus mazzinireticulatus sp. nov., Phacorhabdotus nudus sp. nov., Phacorhabdotus slipperi sp. nov., Taracythere ayressoabyssora sp. nov., and Taracythere thalassoformis sp. nov. Emended concepts are proposed for several important genera to better stabilize their taxonomy. This study considerably reduces taxonomic uncertainty of this important component of the modern and fossil deep-sea ostracod community and provides a robust taxonomic baseline for deep-sea ostracod-based paleoceanographic, paleoecological, and macroevolutionary research.

Ostracods were collected on Sargassum sp. from the littoral of São Sebastião, São Paulo State, southeastern Brazil. A new species, Aurila ornellasae, is illustrated and described based on a population with various instars and adult specimens. This is the first living species of this genus described from Brazil. A brief discussion on the systematics of the genus Aurila Pokorný, 1955 and its allied genera is presented.

The present study analyses ostracods from sedimentary samples collected in the Sao Pedro-Sao Paulo Archipelago, a small set of remote rock islands located Northeastern to the Brazilian coast. Thirteen species were identified, and their zoogeographical distribution was studied. An emendation for Keijcyoidea praecipua (Bold, 1963) is proposed in this paper. The distribution of the species which occur in the archipelago varies significantly: Triebelina sertata Triebel, 1948, is a cosmopolitan species; Loxoconcha ( Loxocorniculum ) tricornata is assumed to occur from the Caribbean Sea to the tropical portion of the Brazilian coast and Western Africa. Keijcyoidea praecipua is recorded through the Pacific and Atlantic coasts of Central America and Northeastern Brazil. Xestoleberis toni ? Wouters, 2003 and Triebelina cf. intermedia Witte, 1993 are known from the African coast. Neonesidea tenera ? (Brady, 1886) emend. Maddocks, 1969 is found along the Indian and Pacific oceans. The species Pontocypris ( Ekpontocypris ) pirifera ? (Muller, 1894) is also present in the western European coast and the Mediterranean Sea. Six species are probably new and have not been observed elsewhere: Aurila sp. 1, Paradoxostoma sp. 1, Paradoxostoma sp. 2, Xestoleberis sp. 1, Xestoleberis sp. 2 and Xestoleberis ? sp. 3.

Studies of the ostracod fauna of Peter the Great Bay are reviewed. Fragmentary data scattered in 37 publications are summarized, resulting in an annotated checklist of 194 species. The superfamily Terrestricytheroidea Schornikov, 1969 is raised to suborder rank, and Cytherois asamushiensis Ishizaki, 1971 is removed to genus Paracytheroma.