Rhoga are small, delicate, pale yellowish flies, with distinct black pilose brushes on the metatibia. The head shape is also characteristic with the occiput being of uniform development, as wide dorsally as ventrally in lateral view (Cheng and Thompson 2008).
Rhoga sepulchrasilva differs from Rhoga maculata (Shannon) in the possession of only a single basal wing macula; apical half of thorax largely yellow, with two round maculae and a wedge shaped macula; posterior half with two L-shaped maculae. Abdomen past second segment almost wholly dark. Yellow wing border extended across wing as a vitta (Hull 1937).
Rhoga species are small, pale orange to yellow flies that have antenna long, scape much longer than basoflagellomere; occiput uniform, as wide dorsally as ventrally; metatibia narrow, with long pile; abdomen elongate, parallel-sided; postpronotum and anpisternum pilose; vein R4+5 without appendix; vein M without appendix; face without a tubercle; and vein M1 straight or slightly recessive.