The genus Syncirsodes Butler 1882 is redefined and its species are taxonomically revised and described. The species are as follows: S. distictaria (Mabille 1885), S. primata (Walker 1862), S. hyadesi (Mabille 1885), S. straminea (Butler 1882) and S. subornata (Walker 1863). The specimen allotype of A. primata Walker (1862) corresponds to the female of S. distictaria. The species deustata Felder & Rogenhofer (1875) and arenosa, carnea, cinerea, squamosa and turbida described by Butler (1882) are junior synonyms of S. primata Walker (1862), The absence of the genitalia of the type and the lack of other specimens make us maintain to S. subornata as a valid species. The genus is distributed mainly in the Andean region, only S. subornata is in the Pampa province. Immature stages and bionomy of S. distictaria and S. primata are described, and an identification key, data on the distribution as well illustrations of the adult moths are provided.