CHRISTOPHER D. BOECKMANKYLE R. PILLERCALEB D. MCMAHANCHRISTOPHER M. MURRAY...
14页
查看更多>>摘要：The genus Paraneetroplus (Teleostei: Cichlidae) currently consists of 11 species that naturally occur from southern Mexico south to Panama. Paraneetroplus melanurus (Gunther 1862) is found in the Lago de Peten system of Guatemala, and P. synspilus (Hubbs 1935) in the Rio Grijalva-Usumacinta system, and other systems in Mexico, Belize, and Guatemala. Reported morphological differences between the two nominal species in the literature are vague but center around characteristics of a dark band that begins at the caudal fin and tapers anteriorly near mid-body. This band is reported as straight (horizontal) in P. melanurus but ventrally sloped in P. synspilus. Some authors have previously suggested that these two forms are not distinct. The purpose of this study was to conduct a systematic morphological comparison of P. melanurus and P. synspilus to further investigate their validity. We examined meristic, morphometric, and geometric morphometric characters and failed to recover diagnostic differences between these two forms. The characters proposed to separate them do not allow for their differentiation, and we conclude that P. synspilus is a junior synonym of P. melanurus. A re-description of P. melanurus is provided on the basis of existing type material and additional material recently collected.
查看更多>>摘要：Two new Erythropinae mysids, Pseudomma bellingshausensis and P. melandi are described from specimens sampled with a suprabenthic sled in the Bellingshausen Sea (Southern Ocean). P. bellingshausensis and P. melandi are distinguishable from its closestcongeners, P. antarcticum Zimmer, 1914, P. jasi Meland & Brattegard, 1995 and P islandicum Meland & Brattegard, 2007 by ocular plate sculpturing and telson armature. A key for the Antarctic and Subantarctic Pseudomma species is also included. Despite their high abundance in most of the marine benthic systems of the Southern Ocean, mysids are not frequently reported in studies on benthos assemblages due to inadequate sampling methodology. These swimming crustaceans often escape traditional benthos samplers because they concentrate near the bottom; therefore, a more representative sampling of mysid diversity is certainly obtained when samplings are carried out close to the sea floor. Samples collected with new types of epi- and suprabenthic sledges confirm the efficiency of such gear and their usefulness for better catching Antarctic mysid species (San Vicente 2010).
PATRICK DAVIDTRUONG QUANG NGUYENNICOLE SCHNEIDERTHOMAS ZIEGLER...
12页
查看更多>>摘要：A new species of the gekkonid genus Cyrtodactylus Gray, 1827, Cyrtodactylus teyniei spec, nov., is described based on a single adult female from Borikhamxay Province, central Laos. It is distinguished from any other Cyrtodactylus species by the combination of the following characters: (1) SVL 89.9 mm, (2) longitudinal rows of dorsal tubercles 19, (3) ventral scales in 38 rows between ventrolateral skin folds, (4) ventrolateral skin folds without tubercles, (5) enlarged femoral and precloacal scales 54 (precloacal scales 8, plus 23 femoral scales on each side), (6) precloacal depression lacking, (7) pre-cloacal pores 14, (8) subdigital lamellae under the firth toe 19-20, (9) enlarged median subcaudals, and (10) nuchal band absent, dorsum with blotched pattern. An extended comparison with other species of the genus Cyrtodactylus, in particular species recently described from Laos and Vietnam, is provided. Cyrtodactylus teyniei spec. nov. is the seventh species of Cyrtodactylus known to occur in Laos.
查看更多>>摘要：A new ascidian species of the genus Pelonaia (Ascidiacea, Styelidae) is decribed from the coastal shore of Terre Adelie, Antarctic. The genus was referenced by a single species widely distributed in the arctic seas. Comparative anatomical descriptionsare given for the species of both hemispheres. The validity of the genus is confirmed. The French MNHN and IPEV program "REVOLTA" (Radiations EVOLutives en Terre Adelie) in January-February 2010 has collected and photographed benthic organisms from thecontinental shelf. The purpose was to survey the benthic fauna at depths ranging from 20 to 200m.
查看更多>>摘要：Five species of the spider genus Anelosimus Simon, 1891 (Theridiidae) are reported from Hainan Island, China, including two new species: Anelosimus membranaceus n. sp. (male, female) and A subcrassipes n. sp. (female). A. seximaculatum (Zhu, 1998) n.comb, is transferred from the genus Theridion Walckenaer, 1805. The male of A. seximaculatum and the female of A. chonganicus Zhu, 1998 are described and illustrated for the first time.
查看更多>>摘要：Glassfrogs (family Centrolenidae) constitute a diverse Neotropical group of epiphyllous and arboreal anurans (Senaris & Ayarzaguena 2005; Guayasamin et al. 2009). They are commonly encountered on stream-side vegetation and many species may show high densities during their reproductive season, with numerous territorial males calling for mates in relative small areas (Senaris & Ayarzaguena 2005; Kubicki 2007; Delia et al. 2010). Territoriality of males in several glassfrog species occasionally impliescombat behaviors. Combat behavior has been poorly documented in glassfrogs, mainly reported from anecdotal observations in just 11 species (McDiarmid & Adler 1974; Duellman & Savitzky 1976; Greer & Wells 1980; Jacobson 1985; Restrepo-Toro 1996; Bolivar et al. 1999; Savage 2002; Guayasamin & Barrio-Amoros 2005; Kubicki 2007; Delia et al. 2010).
查看更多>>摘要：Barychelidae is a pantropical mygalomorph family with 44 genera and 303 species (Platnick 2010). Sason Simon, 1887 is a genus of average-sized spiders with nine species distributed from Seychelles to Ponape, Palau Islands and eastern Australia (Raven1986; Platnick 2010). Five species of this genus are known from two sexes, two species are known only from females, one species is known only from the male, and one species is known only from a juvenile specimen. All species, except for S. robustum (O.P.-Cambridge, 1883), inhabit places not very far from seashore and have very limited distribution.
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