The preliminary data on the spider fauna of Belgrade river islands

Abstract

This paper presents preliminary data on the spider fauna in the higher vegetation layers of four Belgrade river islands (adas) -Ada Ciganlija, Ada Međica, Veliko Ratno Ostrvo and Ada Huja. Most species belong to the families Araneidae and Thomisi-dae (7), followed by families Theridiidae (5), Salticidae (4), Linyphiidae (3), Tetraghnathidae (3), Philodromidae (2), Agelenidae (1), Oxyopidae (1), Pisauridae (1) and Uloboriade (1). The majority of collected individ-uals come from the Tetraghnathidae family. The PEN-insular river islands proved to be richer in terms of the number of recorded species and collected individuals than the true river islands. The observed anthropo-genic impact, present to a greater or lesser extent on all four Belgrade ada's, might have a negative impact on the spider fauna, which should be the subject of future research.

Keywords

• new data
• faunistic research
• uloborus walckenaerius
• serbia