Does urbanization have positive or negative effects on Crab spider (Araneae: Thomisidae) diversity?

摘要: Urbanization has a great impact on the diversity of living organisms. Spiders, for example, have been shown to respond negatively (some orb weaving species) and positively (ground dwelling urbanization. The effects urbanization crab spiders (Thomisidae) (sit-and-wait predators that generally ambush their prey flowers leaves) are not sufficiently known. This paper describes Thomisidae community inhabits green patches in temperate Neotropical city, Cordoba, Argentina, its surroundings, ascertains whether there differences species richness, abundance composition between urban exurban sites. Samples were collected from 30 sites during summer spring 2013 2014, using garden-vacuum method. We compared abundance, richness among three habitat categories (urban, suburban external). Seven genera, Misumenops, Wechselia Tmarus, detected. Misumenops was most abundant genus Tmarus elongates Mello-Leitao, 1929 Argentina first time. thomisid did differ categories, indicating does negative effect communities these open spaces. Site variability, other hand, does, suggesting local factors may be more relevant than broad-scale explain patterns this family.