Arachnologische Mitteilungen, Heft 35 (2008)
Refine
Year of publication
- 2008 (12)
Document Type
- Article (12)
Has Fulltext
- yes (12)
Is part of the Bibliography
- no (12)
Keywords
- distribution (2)
- spider (2)
- Arable land (1)
- Araneae (1)
- Checklist (1)
- Cnephalocotes pusillus (1)
- France (1)
- Mecopisthes perpusillus (1)
- Mecopisthes pusillus (1)
- Microneta pusilla (1)
Wer sich mit der Spinnenfauna der Kaukasusregion oder speziell des Landes Georgien beschäftigt, der wird unausweichlich auf den Namen einer georgischen Arachnologin treffen, die während der vergangenen 70 Jahre die arachnologische Forschung ihres Heimatlandes maßgeblich bestimmt hat. Als erste aus der Kaukasusregion stammende Arachnologin führte Tamara Severyanovna Mkheidze (Abb. 1) in Kooperation mit zumeist russischen Kollegen seit den 1930er Jahren die vergleichsweise junge Tradition kaukasischer Arachnologie fort, die mit einer ersten Bearbeitung im Kaukasus gesammelter Spinnen durch KOCH (1866) ihren Anfang gefunden hatte.
The rare money spider Walckenaeria simplex Chyzer, 1894 was found in 2007 near the city of Meißen (Germany) on a rock overlooking the river Elbe. This is the northernmost occurrence of the species. W. simplex is distributed from Central to South Eastern Europe. The species is thermophilous and prefers wooded slopes with a southern exposition.
Spider fauna of semi-dry grasslands on a military training base in Northwest Germany (Münster)
(2008)
The spider fauna of semi-dry grasslands on the military training area of Dorbaum near Münster (North Rhine-Westphalia) was investigated. From 2002 to 2003 a total of 11,194 mature spiders from 141 species and 20 families was caught by pitfall trapping and hand sampling. Among them are 18 species listed in the Red Data Book of North Rhine-Westphalia, four species are rare or previously rarely recorded. Most of the spiders are habitat generalists that extend their occurrence into all types of habitats, while the number of species which are stenotopic to sand habitats is noticeably low (n = 13). The spider data were analysed with Principal Component Analysis (PCA). It is possible to distinguish spider communities of neighbouring forested habitats from species groups of open habitats, but there is no uniform spider community which is characteristic for semi-dry grassland.
A list of records of 10 spider species that have not been recorded for Schleswig-Holstein/Germany so far and that were found between the years 2004 and 2007 is given. Additional notes about some other 18 species from the regional red list are made.
The spider species Hypsocephalus dahli (Lessert, 1909) is recorded for the first time in Switzerland from museum material collected in 1974. The information given in the literature and unpublished data on this rare species are summarised including an annotated distribution map. All published pictures of males are compared with the holotype. Figures of the male palp and the vulva of the Swiss specimens are provided.
L. religiosum Simon, 1879 was found at Mayen near Koblenz (Rhineland-Palatinate), Germany. This is the first record for Germany and is about 500 km from the known distribution area of the species in the southwestern Alps. The German population seems to be restricted to the ancient Roman quarry “Mayener Grubenfeld” where it is confined to stone walls and cave systems with balanced microclimatic conditions. Genital morphological structures were found to be very fragile, were easily deformed and therefore apparently variable. Difficulties in using these characters for taxonomy are discussed. Ecology, provenance and conservation status of the newly discovered population are considered.
From the beginning of May 2005 to September 2007 the pseudoscorpion fauna in a hardwood floodplain forest of the Rhine valley near Ingelheim was investigated. Altogether 587 individuals representing two species from two families were captured using pitfall traps, trunk eclectors and by litter sieving. The warm, dry winter 2006/2007 exhibited a strong influence upon the activity of Neobisium carcinoides (Hermann, 1804). This winter event was followed by an extreme drought in April 2007, which affected the activity maximum of the corticolous species Chernes hahnii (C.L. Koch, 1839). In 2005 and 2006 the activity maximum of C. hahnii was observed in July, whereas in 2007 maturity was achieved earlier in May. Furthermore 31 individuals of N. carcinoides were captured in trunk eclectors. This climbing behaviour correlates with the presence of Lepidocyrtus lignorum (Collembola: Entomobryidae) on the trunks.
Keywords: activity, Collembola, drought, false scorpions, Germany, prey capture