Abundancia, Composi？？o e Diversidade de Arctiinae (Lepidoptera, Arctiidae) em um fragmento de floresta na Amaz？nia Oriental em Altamira, PA, Brasil

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.