ANTONIO C. MARQUESALVARO L. PENA CANTEROTHAIS P. MIRANDAALVARO E. MIGOTTO...
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查看更多>>摘要：A taxonomic review of the cosmopolitan genus Filellum was performed considering morphology, morphometry and cnidome. Species for which we had access to materials were redescribed and morphologically characterized based on optical and scanning electronmicroscopy (SEM). The materials examined belong to museum collections, including type specimens. All records found in the literature were checked. Our analyses confirmed the validity of 10 out of the 18 nominal species referred to the genus, and established four others (F. adnatum, F. bouvieri, F. contortum and F. plicatum) as species inquirenda. A new species, Filellum bouvetensis sp. nov., is described. The species Reticularia annulata Watson, 1973, type species of the genus Corystolona Watson, 2002,has its type specimen referred to the genus Filellum, composing Filellum annulatum (Watson, 1973). We provide a key for the identification of the valid species of the genus Filellum.
查看更多>>摘要：The representatives of the rare genus Sarsilatona close to originally poorly described S.fernandoi (Rane, 1983) from Central India (Madhya Pradesh State) are studied on the basis of female specimens from two localities in the south of Vietnam. Their exact species assignment remains to be vague due to inability to investigate the type material. The studied specimens differ from all other species of the genus in presence of only small denticles, not setules, on the sensory seta of antennules. S. cf. fernandoi resembles S. serricauda (Sars, 1901) in presence of large dorsal postabdominal outgrowths but differs from the latter in shorter antennules, lack of a large prominence on the posterior side of antennal basipodite, presence of setules, not small denticles, on the ventral valve margins, more numerous anal teeth in each cluster, and less numerous and thicker clusters of spinules near postero-ventral valve margins. The representatives oI S.fernandoi s.l. seem to be widely distributed in tropical Asia, from India to Vietnam, preferring small water bodies. Superficially similar representatives of the genus from Africa probably belong to a yet undescribed new species.
查看更多>>摘要：We describe a new species of the genus Cyrtodactylus based on two adult specimens from Huong Son limestone forest, Hanoi, Vietnam. Cyrtodactylus huongsonensis sp. nov. is distinguished from the remaining Indochinese bent-toed geckos by a combination of the following characters: medium-sized, with a maximum SVL of 89.8 mm; dorsal pattern consisting of dark nuchal loop, neck band and five in part irregular transverse body bands between limbs; two enlarged lateral chinshields in contact with first postmental pair; dorsal tubercles present on occiput, body, forearms, hind limbs and tail base; 14-16 irregularly running dorsal tubercle rows; ventrals in 41-48 longitudinal rows at midbody; lateral skin folds present, without interspersed tubercles; six precloacal pores plus in total 17 femoral pores in males, which are separated by 8-12 poreless scales; enlarged femoral scales and precloacal scales present; three postcloacal spurs in males; subcaudal scales transversely enlarged. This is the 24th speciesof Cyrtodactylus known from Vietnam.
查看更多>>摘要：We describe a new species of the gekkonid genus Gekko from southern Vietnam on the basis of three adult specimens from Cue Dong Cape, Ninh Hoa District, Khanh Hoa Province. Gekko truongi sp. n. is distinguished from congeners by the combination of thefollowing characters: medium-sized species with amaximum 95.9 mm SVL; supralabials 13-15; post-mentals enlarged; interorbitals 45-58; dorsal tubercles absent; well developed lateral folds; scales between mental and cloaca 160-172; ventrals 35 or 36; subdigital lamellae below first toe 11-13, below fourth toe 15-17; faint basal webbing between fingers and toes; precloacal pores in males 10 or 11; postcloacal tubercles in males 1/1; number of transverse dorsal scale rows in the middle of the third caudalwhorl 11; a prominent light postocular stripe is lacking; dorsum grey with dark pattern and light blotches and lines.
查看更多>>摘要：Atelognathus patagonicus is one of the eight species included in the Patagonian genus Atelognathus, an endemic frog occurring in the system of endorheic basaltic lagoons of the Laguna Blanca National Park (PNLB), Neuquén, Argentina. Based on morphological data, Cei & Roig (1968) described two forms of A. patagonicus, which they called "aquatic" and "littoral". These morphotypes were first suggested to belong to different species, but later, Cei (1972) proposed that both forms represent a balanced polymorphism within A patagonicus. More recently, an ecomorphological study showed that aquatic and littoral are reversible forms of the same individual (phenotypic plasticity). In this paper we compare the morphotypes of A. patagonicus using nucleotide sequences of the mtDNA (cytochrome b and control region) in order to test the existence of genetic differentiation between the aquatic and littoral forms. In addition, we present data of genetic variability of A. patagonicus from the Laguna Blanca system.We did not detect genetic differentiation between littoral and aquatic morphotypes for both genes studied. This observation is consistent with the hypothesis of phenotypic plasticity. In contrast with the expected results for low vagility organisms, thediversity index observed in A. patagonicus revealed a low genetic variability.
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