Phänologie und Lebenszyklus von Wolfspinnen (Araneae, Lycosidae) auf Wirtschaftswiesen des Altmühltales/Bayern
Phenology and life cycle of wolf spiders (Araneae: Lycosidae) from meadows of the Altmühl Valley (Bavaria, Southern Germany)
Lycosidae; phenology; life cycle
Abstract
A faunistic study was carried out for two years in the valley of the river Altmühl in 1986 and 1987. With the help of 57 BARBER-traps in meadow habitats near Weissenburg-Gunzenhausen more than 14500 adult and 7700 young wolf spiders were caught. 13 species were found in total: Alopecosa pulverulenta (CLERCK), Arctosa leopardus (SUNDEVALL), Aulonia albimana (WALCKENAER), Pardosa agrestis (WESTRING), Pardosa amentata (CLERCK), Pardosa palustris (LINNE), Pardosa palluta (CLERCK), Pirata hygrophilus THORELL, Pirata latitans (BLACKWALL), Pirata piraticus (CLERCK), Pirata piscatorius (CLERCK), Trochosa ruricola (DE GEER) and Trochosa spinipalpis (F.P.-CAMBRIDGE). The pit-fall traps were installed throughout the year and were controlled every two weeks. The resulting data allow a detailed description of the life cycle of seven species: Alopecosa pulverulenta, Pardosa amentata, Pardosa palustris, Pardosa pullata, Pirata latitans, Pirata piraticus and Trochosa spinipalpis. The life cycle of Alopecosa, Pardosa and Pirata species was found last year. Trochosa species need almost two years to reach maturity.
Die epigäische Spinnenfauna eines Auwaldgebietes der Donau im Landkreis Dillingen/Donau (Deutschland, Bayern)
Ground-living spiders in a floodplain forest area of the Danube river in Bavaria (Germany)
Araneae; faunistics; riparian forest
Abstract
The ground-living spider fauna of a drained floodplain forest area was investigated at 5 sites in the vicinity of the Danube river near Dillingen/Bavaria. Four series of pitfall traps were set up in the forest area, while a fifth series was installed in a dry, sunny clearing. Observation period was from early April through late November 1985. A total number of 1447 adult spiders belonging to 94 species were caught. The main result was that the small, dry clearing area harbours a rather specific spider community that is distinctly different from those of the neighbouring wet areas in the forest.