查看更多>>摘要：Eighteen new species in Pentaceration Just, 2009 (Isopoda, Paramunnidae) are described. From the Arafura Sea: Pentaceration bifida; from south eastern Australia: P. bovicornis, P. denticornis, P. globopleonis, P. lancifera, P. magna, P. meg-alomos, P.omalos, P. rihothalassa, P. serrata, P. simplex, P. tasmaniensis; from New Zealand: P. curvicornis, P. dentifera, P. novaezealandia, P. epipedos, P. setosa; from the Kermadec Trench: P. kermadecia. A key to the 20 known species of Pentaceration is given. Pentaceration is the most diverse genus in the Paramunnidae and has the greatest depth range (7 to 5340 meters). The general distribution of the genus and the presence of species with functional eyes at shelf depth (all other species blind) suggest a shallow water Gondwana origin.
查看更多>>摘要：A new amphipod species, Dikerogammarus istanbulensis sp. nov., is described. Specimens were collected from a reservoir, near Silivri district, Istanbul province, Turkey. The new species is similar to Dikerogammarus bispinosus Martynov, 1925 except forthe presence of setae on inner surface of basal segment of pereopod 7 in both sexes and absence of long setae on the ventral side of second peduncle segment of antenna 1. In addition, epimeral plate 2 has many setae along the ventral margin in both sexes. A detailed morphological description and illustrations of the new species are given. Differences between the new species and related species are discussed. An identification key for the genus Dikerogammarus is presented.
查看更多>>摘要：With 26 named species (Platnick 2011), Acantholycosa Dahl, 1908 is a relatively large Holarctic genus in the wolf spider subfamily Pardosinae Simon, 1898. Acantholycosa was recently revised and 17 species were described as new to science (Marusik et al. 2004). The majority of species occur in Northern Asia and the highest species diversity is known from the Altai-Sayan Mountain System (18 species) (Marusik et al., 2004). Among the newly described species was Acantholycosa logunovi Marusik, Azarkina &Koponen, 2004 from Altai in Russia. The female epigyne of this species was found to be remarkably similar to those of A. norvegica (Thorell, 1872), while male palp was similar to those in A. plumalis species group. While collecting spiders in Altai thesenior author collected over a dozen specimens belonging to Acantholycosa of which one pair was in copula. Study of this material revealed that males were conspecific with figures of the holotype of A. logunovi, but that females were different from thoseillustrated by Marusik et al. (2004). The females described as A. logunovi by Marusik et al. (2004) are instead A. norvegica and therefore females of A. logunovi remained undescribed up until now. Here we describe the female of A. logunovi, provide comparisons with related species and add to the known localities of this species.
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