摘要
this study evaluated the arctiinae fauna in a fragment of primary forest in altamira, par芍, 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%26apos;) 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 par芍 state. values of parameters analyzed for the entire period were: h &= 3.08, e%26apos; = 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.