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Aquatic macrophytes provide foraging and refuge habitats for a wide variety of macroinvertebrates, including spiders. Examination of Salvinia auriculata plants in lagoons in southeastern Brazil resulted in 44 records of spiders belonging to seven families: Cheiracanthiidae, Linyphiidae, Lycosidae, Pisauridae, Salticidae, Tetragnathidae, and Theridiidae. At least seven morphospecies were identified. It is noteworthy that 61.3% of the sampled individuals were young spiders. [ABSTRACT FROM AUTHOR]

A checklist of the family Chelodesmidae Cook, 1895 (order Polydesmida) from state of São Paulo, Brazil has been performed based on literature and examined material from the collection of the Instituto Butantan, São Paulo (IBSP). A total of 15 genera (7 tribes and 5 genera considered incertae sedis) with 64 species are listed. Among these species, 30 presented a single one record in the state, 19 with more than one record and four recorded for the first time for the state of São Paulo, and 11 species occurring in other Brazilian states. The most distributed species is Brasilodesmus paulistus paulistus (Brölemann, 1902) with 52 records of occurrence. In addition, a complete bibliography list of the chelodesmidan fauna from the state is compiled, as well as distribution maps for all species are provided. [ABSTRACT FROM AUTHOR]