It is shown in this study that the two linyphiids currently determined in Japan as Tapinopa longidens (WIDER, 1851) and Floronia bucculenta (CLERCK, 1758) are not conspecific with the European ones but represent different taxa, viz. Tapinopaguttata KOMATSU, 1937, sp. rev.=Tapinopa octodenta WUNDERLICH, 1995, n. syn. and Floronia exornata (L. KOCH, 1878) sp. rev., respectively.
A new cave-dwelling species, Roncus yaginumai CURCIC, CURCIC et DIMITRIJEVIC sp. nov., (Neobisiidae: Pseudoscorpiones) is described from southern Montenegro, Yugoslavia. It is illustrated and compared with its phenetically close congener, R. vulcanius BEIER, from south Hercegovina, Bosnia-Hercegovina. Notes are given on the habitat, distribution and teratology of this endemic species.
One specimen of Paraplectana tsushimensis YAMAGUCHI (Araneae: Araneidae), was recently found in Taichung County, Taiwan. This is not only the new record of the species but also that of the genus in Taiwan.
A rare species of spider for the Korean fauna, Steatoda phalerata (PANZER, 1801), is reported. A male of the spider collected from Daechon-si, Chungchongnam-do, Korea is described and illustrated. The specieis is recorded from Korea for the first time.
Nematode-pseudoscorpion associations were studied in Neobisium bernardi VACHON, N. carpaticum BEIER, N. simoni (L. KOCH), N. sylvaticum (C. L. KOCH), and Roncus jarilo CURCIC, all from Yugoslavia. Mermithid parasitism of pseudoscorpions was re-established for N. carpaticum and R. pannonius CURCIC, DIMITRIJEVIC, et KARAMATA (Neobisiidae). Phoretic associations of rhabditid nematodes and false scorpions were found in R. jarilo and re-established in N. carpaticum. The possible origin of such associations, their characteristics, frequency, and significance are briefly discussed. The total number of pseudoscorpion species associated with nematodes, is at present 15; of these, the majority belong to the family Neobisiidae (11 species), while 3 species belong to the Chthoniidae, and one to the Sternophoridae.
Five new species of the genus Oxyopes (Araneae: Oxyopidae), O. elongatus n. sp., O. minutus n. sp., O. ovatus n. sp., O. reticulatus n. sp. and O. subimali n. sp. are recorded from Buxa Tiger Reserve, West Bengal, India. A total of 9 Oxyopes species are reported from the area.
This paper reviews inter- and intraspecific competition in web-building spiders in the field. Although interspecific competition was thought to be important in spider communities, recent field experiments have revealed that it is infrequent. Intraspecific competition is also not common at the population level. Possible reasons for the absence of competition in spider populations are discussed.