查看更多>>摘要：Two new species of Australoheros Rican and Kullander are described. Australoheros ykeregua sp. nov. is described from the tributaries of the rio Uruguay in Misiones province, Argentina. Australoheros angiru sp. nov. is described from the tributaries of the upper rio Uruguai and middle rio Iguacu in Brazil. The two new species are not closely related, A. ykeregua is the sister species of A. forquilha Rican and Kullander, while A. angiru is the sister species of A. minuano Rican and Kullander. The diversity of the genus Australoheros is reviewed using morphological and molecular phylogenetic analyses. These analyses suggest that the described species diversity of the genus in the coastal drainages of SE Brazil is overestimated and that many describedspecies are best undestood as representing cases of intraspecific variation. The distribution patterns of Australoheros species in the Uruguay and Iguazu river drainages point to historical connections between today isolated river drainages (the lower rio Iguazu with the arroyo Urugua-i, and the middle rio Iguacu with the upper rio Uruguai). Molecular clocks are used to date these and other biogeographic patterns.
查看更多>>摘要：A new species of Notonyx A. Milne-Edwards, 1873 (Crustacea: Brachyura: Goneplacidae) is described from the Sulu Archipelago, southern Philippines. It is closest to the type species, N. nitidus A. Milne-Edwards, 1873, but differs in the form of the abdomen and third maxillipeds, and most significantly, in the structures of the male first and second gonopods.
查看更多>>摘要：A new species of Notonyx A. Milne-Edwards, 1873 (Crustacea: Decapoda: Brachyura: Goneplacidae) is described from Maluku, Indonesia and differs from closely related species, N. latus Ng & Clark, 2008 and N. sagittifer Ng & Clark 2010, in that the male abdomen is relatively narrower and the tip of the male second gonopod is sickled-shaped.
PHILIP-SEBASTIAN GEHRINGFRANK GLAWD. JAMES HARRISALEXANDRA LIMA...
9页
查看更多>>摘要：We describe a new Phelsuma species from the relictual forest of Anja Reserve (13 km south from Ambalavao, on the central high plateau of southern Madagascar). Phelsuma gouldi sp. nov. seems to be an arboreal and possibly rock-dwelling species that hasbeen observed in the private Anja Reserve (949 m a.s.l.), and possibly near Betroka almost 160 km further south-west. The species belongs to the P. mutabilis species group and differs from the other three species of the group, P. mutabilis, P. breviceps, and P. borai by a high genetic divergence of more than 10% in the mitochondrial 16S rRNA gene, and by a combination of 7-9 subdigital lamellae under the fourth toe, 6-7 supralabials, one internasal, and numerous details of throat scalation. Phelsuma mutabilis comprises three mitochondrial clades with divergences of more than 4% in the 16S rRNA gene, but the lack of distinct morphological differences and absence of a geographical structure among these clades indicate that this pattern is currently bestconsidered as reflecting intraspecific variability.
查看更多>>摘要：Several specimens of holothuroids in the collections of the Natural History Museum, U.K., identified as Rhopalodina la-geniformis or simply Rhopalodina sp., were re-examined. Amongst these only the holotype of R. lageniformis is referable to this species. Of the four specimens misidentified as R. lageniformis, two are re-identified as R. parvalamina Cherbon-nier and two described as a new species, R. cabrinovici. Another specimen, originating from Ghana, which is incorrectly identified as Rhopalodinasp., turned out to be a juvenile of Cucumaria congoana Heding and is subject of another paper describing additions to the holothuroid fauna of Ghana.
查看更多>>摘要：A new species of genus Lycodon Boie, 1826 (Squamata: Colubridae) is described from Sichuan Province, China on the basis of three specimens. The new species, Lycodon liuchengchaoi sp. nov., is superficially similar to L.fasciatus and L. ruhstrati but can be distinguished from them by its divided anal plate and the large number and yellow colour of the rings around the body. A new key to the Lycodon of China is presented.
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