查看更多>>摘要：The environmental constraints determining the distribution of the harvestman Discocyrtus prospicuus in Argentina and Uruguay are addressed. Habitat observations across the entire range (Rio de la Plata-Atlantic coast area; Cordoba sierras; northwestern Argentina) are provided. Previous published localities (verified for accuracy), new records and bioclimatic predictors were used to characterize the species bioclimatic profile and to build predictive distributional models with Bio-clim and Maxent algorithms. Relative importance of each bioclimatic variable in the final models is assessed. It was determined that D. prospicuus is primarily a gallery forest dweller, with preferred climate temperate to temperate-cold; variables related to thermic uniformity rank among the most influential. Results consistently support the alleged yungas-Mesopotamian disjunction; but the link between the Rio de la Plata and Cordoba sierras areas shows disagreement between methods (predicted continuous with Bioclim, separate with Maxent). It is suggested that the need for constant air humidity (favored in the core area by its proximity to large rivers and the seacoast) and competitive exclusion with congener D. testudineus may represent additional limiting factors. Someobservations on the species tolerance to human activity are also given.
查看更多>>摘要：Lynceus mallinensis, a new species of laevicaudatan clam shrimp is described from a single temporary pool in Chubut province, Patagonia, Argentina. The form of the male rostrum necessitates a reevaluation of rostral characters for the genus. This species differs from L. rotundirostris, the only known Lynceus from Patagonia, by the absence of a distinct umbo. L. mallinensis is the fourth species of this genus and the fifth laevicaudatan to be reported from South America. The systematical position of the Laevicaudata is discussed in the Introduction.
TAMI MOTTMIGUEL TREFAUT RODRIGUESMARCO ANTONIO DE FREITAS
2页
查看更多>>摘要：In 2008, Mott, Rodrigues, De Freitas and Silva (Journal of Herpetology 42: 172) described as a new species Amphisbaena uroxena, characterized among other features by the presence of conic tubercles concentrated in a circle on the dorsal surface of thetail, an unique feature among South American amphisbaenids. At that time, based only on the three specimens of the type series, all without precloacal pores, they speculated that the absence of pores could be a sex-based difference. In fact, in other amphisbaenid species, the absence of pores in females has been either reported (A. dubia and A. heathi, Vanzolini 2002; A.hiata, Montero & Cespedez 2002) or noticed (A. anaemariae, observed by TM).
查看更多>>摘要：Three species belonging to the subgenus Minuspio are described from the southern coast of Turkey. Prionospio (Minuspio) anatolica sp. nov., and Prionospio (Minuspio) maciolekae sp. nov. are new to science and P. (M.) pulchra is a new report for the marine fauna of the Levantine and Black Sea coasts of Turkey. Prionospio (M.) anatolica sp. nov., differs from all other Prionospio (M.) species by the shape of the prostomium, branchiae, and the absence of eyes. This species has 7 pairs of long, apinnatebranchiae on chaetigers 2 to 8. Prionospio (M) maciolekae sp. nov., differs from other Prionospio (M.) species in having short, densely ciliated branchiae and distinct dorsal crests on chaetigers 10-28. The examination of older materials deposited at theMuseum of Ege University (ESFM) revealed that Prionospio (M.) pulchra, an alien invasive species, also occurred in the Aegean and Black Seas since 2000. In the Mediterranean, this species seems to be first noticed from the Italian waters (Tyrrhenian Sea, Lago di Sabaudia) and misidentified as Prionospio cirrifera. These species were encountered on a variety of biotopes in the region. In addition, two specimens of P. (M.) multibranchiata collected near the type locality (Bazan Bay, Pacific coast of Canada) were examined and a redescription of this species was made. The morphology, ecology and distribution of these species are given together with a taxonomic key to all valid species of the subgenus Minuspio.
查看更多>>摘要：A new species, Scinax insperatus sp. nov., of the S. perpusillus group is described based on specimens collected in the Municipality of Miguel Pereira, State of Rio de Janeiro, Brazil (22° 13' 14.6" S and 43° 26' 02.1" W). The new species is easilydistinguishable from all other species of the S. perpusillus group, except Scinax belloni Faivovich, Gasparini, & Haddad, 2010, by lacking yellow markings in the inguinal region and hidden surfaces of limbs. From Scinax belloni, the new species differs by having dark, metallic-beige colored tubercles on the dorsal surfaces; S. belloni lacks any markings on dorsum, hind limbs, and hidden surfaces, and by lacking inguinal glands. In addition, the tadpoles of the new species are unique among those known for the group in having fins with yellow colored spots in later stages of development.
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