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Research Article
The Spider Loxosceles adelaida GERSTCH, 1967 (Araneae, Sicariidae) in the Karstic Area of Ribeira Valley, PETAR, Sao Paulo, Brazil

Rute Maria Goncalves-de-Andrade, Fernando Delgado Pretel and Denise Vilarinho Tambourgi

Journal of Entomology, 2007, 4(1), 46-50.


Species of Loxosceles spiders are a public health problem in many regions of the world by causing severe dermonecrosis and/or complement dependent haemolysis upon envenomation. Loxosceles spiders are present in several different habitats, including the karstic environment. Due to the substantial increase of tourism in caves of Brazil in the last few years and the medical importance of these arachnids the mapping Loxosceles species in karstics areas of this country is important. Caves of Parque Estadual Turístico do Alto Ribeira (Iporanga, São Paulo State, Brazil) have been surveyed in order to identify the presence of L. adelaida in that important touristic circuit in Brazil, which is visited by thousands tourists every year. This study includes preliminary ecological observations about the behavior of L. adelaida within the caves and in the adjacent forest outside of the caves.

ASCI-ID: 48-101

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