Opiliones (original) (raw)

Abstract

The Argentinean opiliofauna comprises about 115 species (among named and unnamed forms) of both suborders Palpatores and Laniatores. All nine families from Argentina are listed, three belonging in the Palpatores and six in the Laniatores, with a list of the hitherto valid genera and species in the country. Palpatores represent only 16 % of the specific richness, whereas the laniatorid family Gonyleptidae is the most speciose in the country, containing 64 % of the recorded species. Argentinean opilionids are distributed in two major sectors (northeastern and Andean-Patagonian), separated by a wide xeric zone that bears only relictual populations and a few cave forms. The northeastern sector is divided into five opiliological areas: Mesopotamic (comprising the Misiones subarea), Pampean, Central Sierras, Chacoan, and Yungas. Observations on the distribution of the Subantarctic opiliofauna are provided. Habitat disturbance situations, presumably threatening vulnerable harvestmen specie...

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