Arachnologische Mitteilungen

DOI Code: 10.5431/aramit3403
Author(s): Schmitt, M. & A. Nioduschewski
Year: 2007
Title: Ein Beitrag zur Phänologie von Larinioides sclopetarius (Araneae: Araneidae)
Title translated: A contribution towards the phenology of Larinioides sclopetarius (Clerck, 1757) (Araneae: Araneidae).
Issue: Heft 34
Pages: 9-15
Abstract: We investigated a colony of Larinioides sclopetarius, the bridge spider, situated at a bridge-like dam in the city of Duisburg, Germany. The study ran from March until October 2004. The mean population density (all size classes) was 26.2 ind./m². The absolute maximum was found in July (71.3 ind./m²). Most of the spiderlings were found from June to October with mean densities up to 30.9 ind./m² in July, indicating that breeding of L. sclopetarius started in summer. Adult males and females occurred in spring, although the highest abundances (up to more than 3 individuals of each sex per m²) were found in summer and autumn. The adult sex ratio averaged over the study period was 1:1.2 (males:females). Some comparisons with other araneids, both solitary and social species, are drawn and discussed.
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Keywords: abundance, breeding, colonial spider, sex ratio

Arachnologische Gesellschaft - Arachnologische Mitteilungen - 10.5431/aramit3403 - 26.4.2017