Sobre algumas espécies do gênero Eustala (Araneae, Araneidae) do Brasil

Two species of Eustala Simon, 1895 from Rio Grande do Sul, Brazil are described: Eustala belissima sp. nov. and Eustala crista sp. nov., based on males and females. The female of Eustala itapocuensis Strand, 1916, and the males of E. nasuta Mello-Leitao, 1939, E. perfida Mello-Leitao, 1947 and E. secta Mello-Leitao, 1945 are described for the first time. New records from Brazil are listed for Eustala illicita (O. P.-Cambridge, 1889) and E. sagana (Keyserling, 1893).