THE SPECIES COMPOSITION, WHITIN-PLANT DISTRIBUTION, AND POSSIBLE PREDATORY ROLE OF SPIDERS (ARANEAE) IN A VINEYARD IN

NOBRE T., MEIERROSE C.: The species composition, whitin-plant distribution, and possible preda-tory role of spiders (Araneae) in a vineyard in Southern Portugal. In GAJDO P., PEKÁR S. (eds): Proceedings of the 18th European Colloquium of Arachnology, Stará Lesná, 1999. Ekológia (Bra-tislava), Vol. 19, Supplement 3/2000, p. 193-200. In a vineyard in Southern Portugal, the dominant spider species and their distribution on the plant were investigated. From the 19 spider families present, 61 species were identified, 4 of which were considered to be first records in Portugal. More than 90 % of the spiders belonged to 10 species from 7 families. Most spiders were located on the lower surface of leaves, where leafhop-pers fed. The predatory capacity of the spiders towards leafhoppers is discussed in the light of some ecological features