Cacoecia biforata Meyrick, 1930: 224. “ Archips ” biforata: Powell et al. 1995: 148 (new combination).

[Archipini unplaced] biforata: Brown 2005: 125.

Sisurcana valida Razowski and Becker, 2011: 166. New synonymy.

Type material.— Cacoecia biforata Meyrick, 1930: Holotype, ♀: BRAZIL: Serra do Itatiaya, Südabhg., Waldreg., 16‒ 26 x [19]27, Zerny [photograph examined; Razowski 2010: fig. 43]. GS #4353 [figure examined; Razowski 1964: fig. 11] (NHMV).

Sisurcana valida Razowski and Becker, 2011: Holotype, Ơ: BRAZIL: R[io de] J [aneiro], Itatiaia, 2100 m, 25 i 1993, V.O. Becker [photograph examined; Razowski and Becker, 2011: fig. 49], GS #288 [photograph examined; Razowski and Becker, 2011: figs. 13, 14] (VBC). Paratype, Ơ: BRAZIL: same data as holotype (VBC) [not examined].

Discussion.— Cacoecia biforata Meyrick, 1930 was treated as unplaced Archipini (“ Archips ”) by Powell et al. (1995), and that treatment was followed by Brown (2005) (“ Archipini unplaced”). Razowski (2010) treated it as “ Sparganothini unplaced” without explanation. It belongs to neither of these tribes, but rather to Atteriini. The VBC has males and females identified by Becker as biforata, but we were unable to obtain a pair for dissection. Nevertheless, it appears that Sisurcana valida Razowski and Becker, 2011 is the male of Cacoecia biforata Meyrick, 1930 based on similarities in forewing pattern and proximity of type localities. Generic assignment is tentative because of strong sexual dimorphism in some atteriine genera and a lack of published genitalic synapomorphies. We transfer C. biforata to Sisurcana based on its synonymy with S. valida.