femur with ventral bulge or apophysis directed towards proximal
|? Molecular data
(12S, 28S, total evidence: Bruvo-Madaric et al. 2005; 16S+CO1, 28S: Astrin et al. 2007)
The study by Bruvo-Madaric et al. (2005) suggested a close relationship between Systenita, Mecolaestus and Stenosfemuraia (28S), Coryssocnemis and Systenita but not Mecolaesthus (12S), and all four sequenced genera (total evidence). The study by Astrin et al. (2007) supported these results with a smaller sample (Mecolaesthus, Stenosfemuraia, Coryssocnemis: 16S+CO1; Mecolaesthus, Stenosfemuraia: 28S).