Taxonomic revision of the Neotropical genus Scutops Coquillett, 1904 (Diptera: Periscelididae).

The Neotropical genus Scutops is revised, including the description of S. flavithorax sp. nov.

Revision of the Neotropical genus Marbenia Malloch (Diptera: Periscelididae).

The Neotropical genus Marbenia Malloch is revised and now includes 3 species: Marbenia cinerea, sp. nov., Marbenia pallida, sp.