Type species
Castnia dalmannii Gray, 1838
Included species
Yagra fonscolombe (Godart, [1824]) and Yagra dalmannii (Gray, 1838).
Comments
This group was the subject of a recent revisionary study (Moraes et al., 2011), which showed that the species have distinctive characters that corroborate the genus status: (i) discal band extending to M 2 (19: 2); (ii) subterminal part of aedeagus wall with spines implanted on a sclerotized plate (35: 1); (iii) valva with a tooth-like corona near the posterior margin (57: 1); and (iv) eighth tergite in females with the lateral margin sinuous (109: 3).
The following genera were not included in this analysis because of a lack of material, and for this reason we maintained the species in the nominative genus, with no taxonomic modification.
Insigniocastnia Miller, 2007
Included species: Insigniocastnia taisae Miller, 2007. Mirocastnia Miller, 1980
Included species: Mirocastnia canis (Lathy, 1923), Mirocastnia pyrrhopygoides (Houlbert, 1917), and Mirocastnia smalli Miller, 1980.