Révision du genre Pycnomorphus Thomson, 1864. Systématique et phylogénie (Coleoptera : Lamiinae,Acanthoderini)

Le genre Pycnomorphus Thomson est révisé et quatre espèces nouvelles sont décrites: Pycnomorphus guyanensis n. sp., P. pradosiae n. sp.et P. sarryi n. sp. de Guyane, et P. batesi n. sp. du Nicaragua. Un genre nouveau Pycnomorphidiellus n. gen. est créé pour une nouvelle espèce de Guyane, P. polyphagus n. sp. Une analyse cladistique et une clef d’identification des espèces complètent ce travail.     

De nouveaux restes de Primelephas dans le Mio-Pliocène du Nord du Tchad et révision du genre Primelephas

The genus Primelephas Maglio 1970 gathers two primitive species of Elephantinae, only known through dental remains. A large sample of new fossils, discovered by the MPFT field missions in northern Chad Mio-Pliocene localities and attributed to this genus, allowed questioning the validity of one of the species. An intrageneric morphological variability analysis led us to consider this species as a synonym. Therefore, Primelephas should be conserved as a monospecific genus, P. korotorensis being its type and sole species. The provincialism previously described for Primelephas is rejected in favour of a large African distribution of P. korotorensis.     

Le genre Petrascula Gümbel 1873, algue dasycladacée: Émendation,révision des espèces du genre,création de nouvelles espèces

The genus Petrascula has not been reviewed since J. Pia in 1920. At present, seven species are attributed to this genus. Different characteris have been used to define it by the authors. After abundant sampling in the Upper Kimmeridgian or the Southern Jura Mountains, the species-type has been reviewed and divided in two species, the second one named: Petrascula guembeli nov. sp.An other level of Portlandian age, in the same azea, is very rich in Petrascula piaiBachmayer, 1944. This species which has not been observed since that time is here reviewed. Associated with this species, a new one was found and described Petrascula? bugesiaca nov. sp., in spite a doubtful genus attribution.So many different species allow the review and emendation of the genus Petrascula. Then, the other species of the genus: P. globosa (Alth) P. herakiSokac & Nikler, P. illyricaSokac & Nikler, are discussed using the new definition.     

Contributions à la réorganisation systématique des Peritelini ouest-paléarctiques. IX. Révision du genre Meira Jacquelin du Val 1852 (Coleoptera : Curculionidae : Entiminae)

The genus Meira Jacquelin du Val 1852 is revised, four lectotypes and a neotype are designated, a new synonymy is proposed and four new species from France – one from Alpes-Maritimes (Meira alpina n. sp.), two from Var (M. echinoides n. sp. and M. teloniensis n. sp.), one from Vaucluse (M. germanni n. sp.) and one from Italy, from Abruzzo (M. osellai n. sp.) are described,. Synonyms, bibliographic and ecological data are provided. Whole-body photos of the types of the old species and of the four new species, drawings of systematically important characters, keys and distribution maps are also presented.     

Révision du genre Euplotes,fondée sur la comparaison des structures superficielles

Sans résumé     

Révision de Cibaster bourgeoisanus (d'Orbigny, 1853) et de la position du genre Cibaster Pomel, 1883 au sein des Holasteroida

The genus Cibaster Pomel, 1883, with its type species Cibaster bourgeoisanus (d'Orbigny, 1853), has poorly diagnostic characters. So, authors comprise this genus as Cardiaster Forbes, 1850, or as Offaster Desor, 1858. The study of numerous specimens of Cibaster bourgeoisanus, from the Coniacian of the “Craie de Villedieu” in the stratotypical region, demonstrates that this species is paedomorphic compared to Cardiaster, with juvenile pore-pairs and a shallow frontal groove. The plastron structure is derived from the pattern found in Pseudholaster Pomel, 1883. A close relationship between Pseudholaster and Cibaster is probable, with Protocardiaster Smith and Wright, 2003 as intermediate. Cibaster is clearly distinct from Offaster, because this last genus have a meridosternal plastron.     

CMVH,HSV et procréation

At least two members of the herpesviridae family, the human cytomegaloviruses (HCMV) and the herpes simplex viruses (HSV) can be found in human semen; but the role of the germ cells in the sexual transmission of these viruses is not clear. In teenagers and the adult population, sexual contact is considered to be a common mode of HCMV acquisition. HCMV was isolated from semen specimens of 33 % of HIV infected homosexual men, 20 % of HIV uninfected homosexual men and only of 2,4 % of healthy heterosexual men. Virus particles could be demonstrated by electron microscopy examination inside the sperm head as well as in the seminal liquid but at present, there is no direct evidence either for HCMV transmission via fertilization or for induction of fetal anomalies by vertical transmission. Transmission via donor semen is undoubtedly possible although not yet described and it may be safer to employ HCMV seronegative donor for all recipients, regardless of the recipient’s serologic status. The development of serologic assays that differentiate the two serotypes of HSV demonstrated the worldwide distribution of genital HSV-2 which has been increasing in many developed countries throughout the last two decades. In several studies, HSV-2 has been recovered from the male reproductive tract, specifically the prostate, seminal vesicles, vasa and testes, in the absence of active lesions. In contrast, tissue cultures of semen sampled during lesion-free periods had been uniformly negative for HSV. However recently, one report documents transmission of HSV-2 via therapeutic donor insemination and illustres the fact that semen might be a vehicle of transmission of HSV. At present, it is adequate to recommend that men, with a history of a recurrent genital herpes or who have a sexual partner with such a history, are excluded as potential semen donors. Further, in the near future, with the increase of asymptomatic viral shedding from the genital tract, the presence of HSV-2 antibody could be added as an exclusion criterion.     

Recherches sur l'hérédité de la dilution et du blanchiment du pelage dans le genre cavia

Sans résuméTravail exécuté grâce à une subvention de la DonationGeorges etAntoine Claraz, instituta et curataJohannis Schinz professoris auspiciis Série zoologie n^o 66     

Deux nouveaux représentants du genre Ascidiella(Clavatoraceae,Charophyta)

Two new species of the genus AscidiellaGrambast are described: A. inflata et A. irregularis. They come from the Lower Cretaceous of the Iberian peninsula.     

Révision du genreProstrepsiceros Major 1891 (Mammalia,Bovidae)

The study of new fossils from the Miocene of Macedonia (Greece) has led us to a revision of the genusProstrepsiceros, which we propose to divide into two subgenera:P. (Prostrepsiceros) andP. (Helicotragus), these subgenera comprising respectively two and three species.     

Révision des genres Otoclinius Brenske 1896, Falsotoclinius n. gen. et Tanyproctoides Petrovitz 1971 (Coleoptera : Melolonthidae : Pachydeminae)

Cinq espèces étaient assignées au genre Otoclinius Brenske 1896. Létude d’un syntype de O. gracilipes Brenske 1896 nous amène à transférer toutes les espèces décrites comme Otoclinius par Petrovitz dans le nouveau genre Falsotoclinius. L’étude de ces espèces nous conduit à rétablir O. fragilis Petrovitz 1980. Par ailleurs, O. loebli Baraud 1991 est synonyme de Phalangonyx hormozianensis (Petrovitz 1980) (n. comb.). Le genre Tanyproctoides Petrovitz 1971 et son nouveau sous-genre, Odontiellus, créé ici pour regrouper Tanyproctoides silfverbergi Keith 2002, d’Irak et d’Arabie Saoudite, T freyi (Petrovitz 1968) (n. comb.) et T. mirzayansinus n. sp. du sud de l’Iran, sont également révisés.     

Loreleiella nov. gen., nouvel éodévonariidé(Chonetacea,Brachiopoda) du Dévonien

The detailed morphological analysis of the dorsal interior of Chonetes arcuatus Hall, 1857, typespecies of the genus Eodevonaria (North American Lower Devonian), compared with those of the European species classically assigned to this genus, allows the erection of a new genus for the European eodevonariids. The phylogenetic relations of Loreleiella nov. gen. and its paleobiogeographic implication are discussed.     

Étude paléontologique du genre Sabinia (Rudiste à canaux)des récifs du Campanien de Tunisie

Campanian rudist reefs of Central Tunisia are rich in pallial-canal rudists, belonging to the genus Sabinia. The Djebel Serraguia layer shows well-preserved samples allowing to make a detailed paleontologic study. A new sub species of a previously observed species from the Maastrichtian of Yugoslavia and Turkey is described. Identified for the first time on the african margins, this new taxon gives interesting data concerning systematic and evolution of the genus Sabinia, as well as the relationships between reef provinces during the Upper Senonian. The biosedimentologic role of Sabinia within tunisian reefs is pointed out.     

Biogéographie et systématique des abeilles rubicoles du genre Ceratina Latreille au Turkestan (Hymenoptera,Apoidea, Xylocopinae)

Les affinités fauniques et la délimitation même du Turkestan en tant qu’entité biogéographique sont mal connues ou controversées. Elles sont discutées ici dans le cadre d’une révision systématique des espèces d’abeilles rubicoles du genre Ceratina. Onze espèces, dont une nouvelle: Ceratina (Euceratina) haladai n. sp., y sont répertoriées. Trois espèces sont redécrites et une clé d’identification est proposée. Toutes ces espèces sont soit présentes dans la région ouest-paléarctique, soit de proches parentes d’espèces méditerranéennes. Aucune espèce ne présente d’affinités notables avec les taxons orientaux ou est-paléarctiques. La carte de distribution de chaque espèce est établie et comparée à la distribution des biomes régionaux. Comme elles sont très largement polylectiques, les plantes butinées ne constituent probablement pas un facteur limitant de leur distribution. A l’inverse, leur nidification rubicole les cantonne à des biotopes riches en ronces (Rubus species) ou en autres plantes à tiges creuses ou médullaires (par ex. Verbascum species). Ceci explique leur implantation plutôt synanthrope en montagne et le long des fleuves.