GORDON L. J. PATERSONANDREW CABRINOVICMARINA R. CUNHACLARA F. RODRIGUES...
26页
查看更多>>摘要：The Ophiuroidea collected from mud volcanoes and adjacent bathyal environments from the Gulf of Cadiz are reviewed. Thirteen species from six families—Ophiacanthidae, Ophiactidae, Amphiuridae, Amphilepididae, Ophiuridae and Ophi-olepididae—were identified. A direct relationship to the chemosynthetic assemblages has not been established as the ophiuroids found in the mud volcanoes do not appear to have novel morphological adaptations and also occur in non-reducing environments. The ophiuroid fauna from the Gulf of Cadiz differs from other cold seep regions not only by the high species richness but also because members of Amphiuridae are dominant both in number of species and abundance. One species previously unknown, Ophiopristis gadensis sp. nov.,(Ophiacanthidae) was collected from a dead cold-water coral thicket at the flank of a mud volcano and differs from its congeners in the type of disk spines which are more rugose and not smooth as in most of the other species, the presence of the thickened integument in larger specimens and the distinct separation between the oral papillae and the second oral tentacle scales.
查看更多>>摘要：Pyura stolonifera is a large solitary ascidian found in Africa, Australasia and South America. The taxonomic status of different populations of this species is disputed, especially since there is evidence for several distinct morphological and geneticunits that point towards the existence of multiple cryptic species. While some researchers still recognize P. stolonifera as a single species, others treat the different populations as distinct species. Here, we present a revision of the P. stoloniferaspecies complex based on the examination of samples from all regions where there are reliable reports of this taxon. We recognize four species that are both morphologically and genetically distinct, one of which is new to science and is formally described here. This species is morphologically distinct from the other three members of the species complex in terms of the colour and texture of the tunic, the arrangement of the gonads within the gut and the shape of the dorsal tubercle, among other characters. We name the new species Pyura dalbyi after Dr. J.E. Dalby Jr., whose research on its ecology and distribution provided the incentive for examining this species more closely.
查看更多>>摘要：Cyphophthalmi is a group of small to medium sized opilionids with a circumglobal distribution that have often been overlooked in biodiversity surveys due to their small size, cryptic life style and general resemblance to mites. We present an overviewof the described species in the genus Neogovea (Neogoveidae), an identification key to the species and the description of a new species based on the material from a biodiversity survey of an inselberg in French Guyana. Neogovea virginie n. sp. is morphologically most similar to N. immsi Hinton occurring in Brazil, but differentiated by the structure of the "crown" of the spermatopositor.
查看更多>>摘要：Two new deep-sea munidopsids, Munidopsis aurantia sp. nov. and M. laevisquama sp. nov., are described from Taiwan. Munidopsis aurantia sp. nov. closely resembles M. serricornis (Loven, 1852), but differs in lacking an anteimal spine, cheliped with fingers longer than palm and merus bearing distal spines but without a row of dorsal spines. Munidopsis laevisquama sp. nov. differs from other congeners by its carapace being densely covered with squamae but without dorsal spines, eyes that are subglobularand lacking spines or papillae, the basal antennal segment bearing a cylindrical process, and the cheliped and walking legs all lacking distal spines. Altogether 36 species of Munidopsis are now known from the deep waters off Taiwan.
查看更多>>摘要：The genus Oreoglanis is reported for the first time from India. Oreoglanis majusculus, new species, from the Kameng River at Rupa (Brahmaputra basin), in Arunachal Pradesh, India, differs from all its congeners in having the posterior margin of the maxillary barbel with villiform projections, vs. entire, crenulate, laciniate or lobulate in all other species of the genus. Smith (1933) erected the glyptosternine catfish genus Oreoglanis and designated O. siamensis from the Kang River [=Mae Klang], northem Thailand, as its type species. The representatives of the genus possess a continuous post-labial groove; gill openings not extending on to the venter; homodont dentition in the upper jaw; heterodont dentition in the lower jaw (characterized by an inner row of pointed teeth and an outer row of short, spatulate teeth); upper-jaw teeth pointed, in two patches, joined into a continuous band; and 16-18 branched pectoral rays (Thomson & Page, 2006). Some authors have expressed the need to rediagnose the glyptostemine genera (He, 1996; Ng, 2004a; Ng & Kottelat, 1999; Ng & Rainboth, 2001; Ng & Freyhof, 2001); however, as in previous studies, the genus Oreoglanis is considered valid.
查看更多>>摘要：Mathews (1935) described the population of the New Zealand endemic hihi, or stitchbird Notiomystis cincta (Du Bus) from Little Barrier Island (Hauturu) as the subspecies hautura, distinct from the nominate subspecies on the mainland of the North Island. Mathews based his description on a series in the American Museum of Natural History, New York, but did not designate a type specimen. The AMNH specimens vary in the quality of the label data associated with them, and the locality information on some is somewhat uncertain.
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