查看更多>>摘要：Thirteen species of the Western Atlantic genus Hypoplectrus (Serranidae) are currently recognized, two of which are described as new. Hypoplectrus may a n. sp. (Maya hamlet) is restricted to the coastal lagoon of the Meso-American Barrier Reef systemin Belize. It is a solid iridescent blue, lacks nose spots and lacks black margins on fins. Hypoplectrus randallorum n. sp. (Tan hamlet) is found widely in the central and western Caribbean. Its color varies from light brown to tan and it has spots on the nose, at the base of the pectoral fin and occasionally on the upper part of the caudal peduncle. All identified species of Hypoplectrus are illustrated in live coloration along with examples of color variations in H. nigricans and H unicolor. A historical review of Hypoplectrus is included with a discussion of issues concerning their taxonomy.
MARCELO GOMES DE LIMACARLOS ALBERTO GONCALVES CRUZIVAN NUNES
9页
查看更多>>摘要：A new species of the Scinax catharinae group, morphologically similar to S. strigilatus, is described from Municipality of Murici (09°12'S, 35°52'W, 509 m a. s. 1.), State of Alagoas, northeastern'Brazil. Scinax muriciensis sp. nov. is characterizedby the medium size (adult males SVL 27.0-28.9 mm), W-shaped interocular spot, green flash color in the inguinal region and hidden areas of thigh and shank, rounded snout in dorsal view, externally distinguished vocal sac, marked can-thus rostralis, vomerine teeth in two straight series, non-developed nuptial pad, presence of supernumerary tubercles on feet, lack of externally well developed inguinal glands, foot webbing formula I-II 1~(1/2)-3~+ III 1~(1/2)-2~(1/2) IV 2~(1/2)-1~(1/2) V. This is the northernmost distribution in the Scinax catharinae clade.
查看更多>>摘要：Seven species of eukalyptorhynch flatworms from the Galapagos Islands are reported. Six of them belong to the taxon Koinocystididae Meixner, 1924, three of which are new to science. Two of these new species can be attributed to the genus Itaipusa Marcus, 1949 based on the construction of the prostate vesicle and the general structure of the female system. Itaipusa biglandula n. sp. is characterised by a very short, muscular, unarmed penis papilla, whereas I. renei n. sp. is characterised by the presence of a cirrus armed with minute scales, and two large, blunt hooks in the male atrium. The third new species cannot be placed in any existing taxon and therefore a new genus is erected: Galapagetula annikae n. gen. n. sp.. It is characterised by a straight and rather long cirrus, armed with small spines, and a clearly bipartite bursa in the female system. Additional morphological information is given for the three known species of Koinocystididae: I. divae Marcus, 1949; I. variodentata (Karling, Mack-Fira & Dorjes, 1972) Karling, 1978 and Utelga heinckei (Attems, 1897) Karling, 1954. For I. divae a new locality from Curacao is also mentioned. The seventh species is a species of Gnathorhynchidae: Prognathorhynchus eurytuba Ax & Armonies, 1987, for which new morphological information on the organisation of the genital system is given.
查看更多>>摘要：The study of newly collected samples from Okinawa, Ryukyu Islands, revealed that males of Pagurus pilosipes (Stimpson, 1858) have a prominent right sexual tube directed posterolaterally. Comparison of specimens previously identified as Pagurus pilosipes and newly collected specimens, combined with a molecular genetic analysis using partial sequences of the mitochondrial cytochrome c oxidase I (COI) gene, shows that Stimpson's taxon occurs in the Japanese mainland, the Ogasawara Islands, the Okinawa Islands, and Korea. Stimpson's taxon is transferred to the genus Boninpagurus Asakura and Tachikawa, 2004. Based on morphological and molecular evidence, Boninpagurus acanthocheles Asakura & Tachika-wa, 2004, the type species of Boninpagurus, is synonymized with B. pilosipes n. comb. Affinity of Boninpagurus is briefly discussed.
查看更多>>摘要：Gaudant (2011) has shown that Brachylebias Priem, 1908 is a junior synonym of Aphanius Nardo, 1827 and that therefore the new name for the Late Miocene species Brachylebias persicus Priem, 1908 is Aphanius persicus (Priem, 1908). In addition, he stated that a new name has to be assigned to the extant A.persicus (Jenkins, 1910). However, before a new species name can be assigned, it is necessary to demonstrate that the two species, currently named A. persicus, are different. Here we show that slight differences are present in the meristic characters between the fossil A. persicus (Priem, 1908) and the extant A. persicus (Jenkins, 1910), and that clear differences are present with regard to the size and morphology of the scales and also with regard tothe shape of the jaw teeth. We demonstrate that the epithets blanfordii and pluristri-atus, both introduced for Aphanius species by Jenkins (1910), do not represent alternative names, and we introduce A. farsicus as replacement name for A. persicus (Jenkins, 1910).
CARLOS HENRIQUE SOARES CAETANOVICTOR SCARABINOALVAR CARRANZA
5页
查看更多>>摘要：The genus Bathycadulus Scarabino, 1995 was described on the basis of a bathyal species {Bathycadulus fabrizioi Scarabino, 1995) collected from the southern Indian and western Pacific waters. Here we describe three new species, and conduct a morphometric analysis of shells of the four species. Those findings confirming the rather large bathyal and abyssal geographic distribution of the genus.
查看更多>>摘要：Most species of spiders exhibit some degree sexual size dimorphism (SSD). Females are usually larger than males, about 20% on average (Vollrath 1998), although this difference can be much larger. By convention, species in which the adult males are half or less of the adult female size are considered sexually dimorphic, some representing cases of extreme SSD (Hormiga et al. 2000). It is worth mentioning that although males are called dwarfs, large SSD is often a consequence of female gigantism ratherthan male dwarfism (Hormiga et al. 2000).
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