In 1998-99, spiders of the mainly Siberian genus Wubanoides Eskov, 1986 were found in a block field in the Harz mountains, Lower Saxony, Germany. They resemble W. uralensis (Pakhorukov, 1981), but appear taxonomically distinct when compared with paratypes of this species. Up to the clarification of their taxonomic status, they are announced here as W. uralensis. Short notes are given on biology and ecology, the questionable status of the species as a "glacial relict" is discussed.

Spider of the Year 2000 and 2001 Argyroneta aquatica and Argiope bruennichi.

book review: Vereinigung umweltwissenschaftlicher Berufsverbände Deutschlands - VUBD (Hrsg.): Handbuch landschaftsökologischer Leistungen - Empfehlungen zur aufwandsbezogenen Honorarermittlung

book review: R. Nitzsche: Das Brautgeschenk der Spinne Pisaura mirabilis (Clerck, 1757) (Pisauridae)

book review: Atmung über Plastron bei einer Geißelspinne nach: Hebets & Chapman (2000) - J. Insect Physiol. 46: 13-19

book review: C.L. Deeleman-Reinhold: Forest spiders of South East Asia.

book review: F. Murphy & J. Murphy: An introduction to the spiders of South East Asia.

Distribution and ecological characterization of Theridion hemerobium Simon, 1914 (Araneae: Theridiidae) in Europe

Stabilimentum variability in the webs of adult female Argiope bruennichi

The fauna of epigeic spiders (Araneae) occurring on three different types of pastures in northern Wielkopolska was analysed. Studies were conducted from May 1992 to October 1993. The 18,995 specimens collected were classified as belonging to 137 species and 17 families. The family Linyphiidae proved the richest in species while Lycosidae was the most abundantly in terms of number of specimens. Zoocenological analysis of spider communities showed their differentiation testifying to differences in the sites studied. The dominants were: 1) Osowo Stare (Site 1): Pardosa palustris, 2) Sycyn Dolny (Site 2): Xerolycosa miniata, P. palustris, Xysticus kochi, 3) Braczewo (Site 3): Erigone dentipalpis, P. palustris. Seasonal changes of dominance of the species at each site were established. A comparison of changes of the species’ dominances in the years 1992 and 1993 disclosed similar values of the individual dominance coefficient at the sites in Osowo Stare and Braczewo. This result indicates the occurrence of the process of stabilization of these biocenoses and a tendency to equilibrium in the environment. The least stable proved to be the site at Sycyn Dolny. Analysis of the seasonal dynamics of epigeic spider communities was also made by determining the mean number of species at each site in the two years of study. The highest number of species was noted in spring. It is interesting to note the appearance of species which are rare or very rare in Poland such as: Lepthyphantes insignis, Ostearius melanopygius, Enoplognatha mordax and Enoplognatha oelandica.

During May and June 1994, 45 pitfall traps were exposed in three types of small, urban habitats: traffic islands, flat gravel roofs and courtyards ranging from 65 to 1.800m2. The three habitat types differ in their exposure to sun and wind creating microclimatic conditions similar to a variety of natural habitats, i.e. grassland, rocky outcrops and forests. In total, 2.163 spiders (147 juveniles) were caught, belonging to 61 species in 16 families. A cluster analysis showed distinctively different spider assemblages for the three habitat types. Traffic islands are inhabited by a typical openland community. Dominating species are Alopecosa pulverulenta, Pardosa pullata and Pachygnatha degeeri. Gravel roofs show high numbers of salticids, in particular Euophrys lanigera. Courtyards lack dominant species and show a high number of species naturally occurring in forest habitats. The activity density on the gravel roofs and in the courtyards does not appear to be high enough to support stable populations.

book review: R. Forster & L. Forster: Spiders of New Zealand and their worldwide kin

Spider of the year 2001

Congress invitation

congress report