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INFLUENCE OF SIZE AND FORM OF FOREST FRAGMENTS ON THE TAXOCENOSIS COMPOSITION OF GREEN LACEWINGS (NEUROPTERA: CHRYSOPIDAE)

ABSTRACT

This study aimed to verify the lacewings taxocenosis (Neuroptera: Chrysopidae) in 15 semideciduous forest fragments in the Alto Rio Grande region, southern Minas Gerais State, Brazil, as well as the effect of the patches’ size and complexity on the community structure. The adults were caught by sweep net, for one hour, inside the forest fragment distant 50 m from the edge. The area of the fragments was obtained using a GPS, which also generated the measure of the perimeter, used for calculation of the patch’s complexity. A total of 154 lacewing specimens were collected belonging to 2 subfamilies, 2 tribes, 5 genera and 17 species. The estimated richness was 23 species, by the Jackknife1 method. Leucochrysa McLachlan, 1868 (Leucochrysini) was the genus with highest diversity (8 species). However, Ceraeochrysa tucumana (Navás, 1919) (Chrysopini) was the most abundant species (45 specimens). The species richness and abundance in the fragments studied was not influenced by area or complexity.

KEY WORDS
Atlantic Forest; biodiversity; Ceraeochrysa ; Leucochrysa ; predators

Instituto Biológico Av. Conselheiro Rodrigues Alves, 1252 - Vila Mariana - São Paulo - SP, 04014-002 - São Paulo - SP - Brazil
E-mail: arquivos@biologico.sp.gov.br