Maruina Müller, 1895 (Diptera: Psychodidae): description of four new species from Brazil, with revised diagnoses for the genus and subgenera.

Maruina is an aquatic genus of Psychodidae with larvae and pupae adapted for life in flowing water. The genus is restricted to the Western Hemisphere, with the majority of species distributed in the Neotropical region. 39 Maruina species are described, with 11 currently known to occur in Brazil, all recorded from the eastern Biomes of Atlantic forest and Caatinga.

Contribution to the knowledge of the Neotropical species of Hermann, 1912 (Diptera: Asilidae: Laphriinae).

The male of Smeryngolaphria gurupi Artigas, Papavero & Pimentel, 1988 and the female of Smeryngolaphria taperignae Artigas, Papavero & Pimentel, 1988 are described for the first time. The habitus, thorax, abdomen, male and female terminalia with external and internal structures are illustrated and described. The external and internal structures of the male and female of Smeryngolaphria gorayebi Artigas, Papavero & Pimentel, 1988, Smeryngolaphria maculipennis (Macquart, 1846) and Smeryngolaphria numitor (Osten Sacken, 1887) are described and illustrated, Smeryngolaphria numitor for the first time.