Abstract

TESTON, José Augusto; NOVAES, Jessé Bucioli  and  ALMEIDA JUNIOR, José Otávio Barros. Abundance, Composition and Diversity of Arctiinae (Lepidoptera, Arctiidae) in a forest fragment in the Eastern Amazon in Altamira, PA, Brazil. Acta Amaz. [online]. 2012, vol.42, n.1, pp. 105-114. ISSN 0044-5967.  http://dx.doi.org/10.1590/S0044-59672012000100013.

This study evaluated the Arctiinae fauna in a fragment of primary forest in Altamira, Pará, Eastern Amazonia, Brazil. The moths were sampled during two years (from August 2007 to July 2009) with a light trap. The following parameters were measured: richness, abundance, constancy, diversity and evenness indices (Shannon H ‘and E') and Brillouin (H and E), and dominance index of Berger-Parker (BP). The richness estimatives were made by nonparametric procedures, Bootstrap, Chao 1, Chao 2, Jackknife 1, Jackknife2 and Michaelis-Mentem. Four hundred and sixty-six individuals of 78 species of Arctiinae were captured, of which twelve are new records for Pará State. Values of parameters analyzed for the entire period were: H ‘= 3.08, E' = 0.708, H = 2.86, E = 0.705, and Sp = 0.294. Communities of the less rainy months were more diverse. Estimators predicted an increase between 17 to 253 in species richness.

Keywords : Biodiversity; Moths; Neotropical Region; Noctuoidea.