查看更多>>摘要：The Gonatodes concinnatus complex, as here considered, consists of Gonatodes species characterized by a white suprahumeral spot with black margins; vermiculations or not on back; and transversely enlarged scales under the tail, showing the sequence 1'1' 1", and in some specimens 1' 1 '2" on the anterior portion. Two species are presently recognized in this Amazonian complex: G. concinnatus and G. tapajonicus. New material collected in eastern Amazonia (states of Para and Amapa, Brazil) made it necessary to review these species. We analyzed several populations within this complex, from Colombia, Ecuador, Peru, Venezuela and Brazil, including these new records. Specimens were separated in groups defined on basis of color pattern. Stepwise discriminant function analyses were then performed to compare the external morphology (measurements and scale counts) in these groups. Results support recognition of five taxa, corresponding to G. concinnatus from western Amazonia, in Ecuador and northern Peru; G.ligiae from northwestern Venezuela (east of the Andes); G. tapajonicus, from the Tapajos river basin, in Para, Brazil; and two new species, one from eastern Amazonia, in the states of Para (north and south of the Amazon river) and Amapa, Brazil, and another from central Colombia, east of the Andes. Diagnoses and descriptions of all species are presented.
查看更多>>摘要：A decade-long survey of ground waters in the state of Andhra Pradesh, India, has so far yielded over sixty new crustacean taxa, belonging to Copepoda, Bathynellacea, Amphipoda, Isopoda, and Ostracoda. This paper describes a new genus and species attributable to the phreatoicidean isopod family Hypsimetopidae Nicholls, and provides ecological and behavioural observations. The new taxon was found in Guthikonda Cave, which is about 8 km from Piduguralla town in the Palnadu atea of Andhra Pradesh State.The species belonging to this clade are unusual in that their dorsoventrally flattened pleotelson gives them a non-phreatoicidean appearance. Because the postanal margin is missing, as in other members of the Hypsimetopidae, this is a superficial similarity rather than homology with other isopods. Other unusual features include robust blunt denticles on opposing margins of the pleotelson and protopod of the uropods. The species in this clade, of which Andhracoides shabuddin gen. nov., sp. nov. is only the first to be described, are related to Nichollsia Chopra & Tiwari, found in northeastern India, and to Pilbarophreatoicus Knott & Halse from the Pilbara region of Western Australia. The new species differs from its undescribed congeners in being nearlydevoid of dorsal setae; other species ofAndhracoides gen. nov. are much more hirsute.
查看更多>>摘要：A new species of Centromedon Sars, 1891 is described based on abundant material collected in baited traps at 2500 m on the Mid-Atlantic Ridge. The species can be distinguished from the most closely allied species, Centromedon typhlops (Sars, 1879), Centromedon mediator (Barnard, 1962) comb. nov. and Centromedon laevis (Bonnier, 1896) comb, nov., by the form of the gnathopods, and characters of the mouthparts. A key to the eight species in the genus is provided. The differences between the closely allied genera Uristes Dana, 1849 and Centromedon are discussed.
查看更多>>摘要：Meteterakis wangi sp. nov. was collected from the intestine of Indotestudo elongata (Blyth) from Shijiazhuang, Hebei Province, China by anthelminthic treatment. The new species differs from congeners by the shape and length of spicules, the number andarrangement of caudal papillae, and presence of gubernaculum. The name of M. bufonis Gambhir, Tar-nita, Chinglenkhomba, Gyaneswori & Indranich, 2006 was preoccupied and is thus a junior secondary homonym of M. bufonis (Biswas & Charkavarty, 1963) Baker,1984. We propose to rename the species as M. gambhiri nom. nov. A key to the species of the genus Meteterakis is also given.
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