Featured Arthropod: Pardosa glacialis

Pardosa glacialis

Photo courtesy of Oskar LP Hansen

Pardosa glacialis (Thorell, 1872) is described by Leech (1966) as being eurytopic, but at Zackenberg in northeast Greenland it is found more abundantly in mesic heath (pers. obs.) and is holarctic in distribution (World Spider Catelog Version 16). Leech described an individual’s behaviour as follows: “Mating was never observed in P. glacialis, but one male which had repeatedly been shunned by all females, began courting a large male Chironomid, which was lying on its side almost dead. The male eventually mounted the fly in the usual Pardosa manner, it then discovered the mistake and ate the fly.” Previous year’s snowmelt is a good predictor of body size variation in this species and females are more strongly affected by environmental variation (Høye et al. 2009, Høye and Hammel 2010).

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