Type species: Protalebra octolineata Baker, 1903, by original designation.
Morphological diagnoses of Rhabdotalebra were provided by Young (1957) and Catalano et al. (2010).
Host plants: (Bignonaceae) Tabebuia pulcherrima Sandw; Tabebuia impetiginosa (Mart. ex DC.) Standley (“lapachos”), Tabebuia ipe (Mart.) Standley (“lapachillo”) (Catalano et al. 2010), Tecoma stans (Linnaeus ) Juss. ex Kunth (Guarán-Guarán).
Geographical distribution: Species of the genus distributed in Argentina were previously recorded from the northern provinces (Young 1957; Catalano 2010). The new finding represents the southernmost distribution of the genus.