A new neotropical genus of simuliids is characterized based on species previously included in the "Siolii Group" of Psaroniocompsa genus. Identifications keys for immature stages are presented. Shelleyellum genus is constituted by the species: S. damascenoi (Py-Daniel,1988), S. guaporense (Py-Daniel, 1989), S. lourencoi (Py-Daniel, 1988), S. siolli (Py-Daniel, 1988), S. tergospinosum (Hamada, 2000). The genus is mainly characterized by longitudinal carina in male distimere and the presence of tegumentary tubercles in the larvae.
Shelleyellum n. gen.; taxonomy; Simuliidae; Neotropics
