In his treatment of the Smiliinae, BUTLER (1877), described several species of Ceresa Amyot & Serville, 1843. In their description of C. robusta, based on a female specimen, the authors pointed that "... the form of the pronotum differs considerably from all described species". Despite this comment, the taxonomic position of C. robusta was maintained until recently, when ANDRADE (1999), upon examining the type specimen in the collection of The Natural History Museum (BMNH), London, concluded that it actually belongs in Darninae. He then transferred it to Alcmeone Stål, 1876, and the species name became A. robusta (Butler, 1877). He also discovered that A. sinuata, described by FONSECA & DIRINGSHOFEN (1974) from a single male, was a junior synonym with A. robusta. MCKAMEY (1998) catalogued 10 valid species in Alcmeone Stål, but the immature stages, biology and behavior of the species of the group have not been documented in the literature. In the present paper, we describe the last-instar nymph of Alcmeone robustus (Butler, 1877) (corrected spelling for the species-group name), and provide some biological/behavioral notes on the species, including observations on the newly emerged adult males and females.

Duas espécies são descritas da Mata Atlântica do Estado de São Paulo: uma pertencente ao gênero Antonae Stål (Smiliinae-Ceresini), Antonae brasiliensis sp. nov. e outra a Hypheodana Metcalf (Darninae-Darnini), Hypheodana gargionei sp. nov., ambas de Campos do Jordão, São Paulo. O gênero Antonae é registrado pela primeira vez no Brasil e Hypheodana, por outro lado, para a Mata Atlântica.

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