As espécies neotropicais da família Simuliidae Schiner, 1864 (Diptera-Nematocera): I. Simulim (Eusimulium) orbitale Lutz, 1910, Simulium (Eusimulium) pintoi n. sp. e Simulium nigrimanum MACQUART, 1837, sp. inquirendae

The present paper initiates a serial, in which the authors propose revising the neotropical species of Simuliidae. In this first contribution, a bibliographical survey, and redescriptions of the male, female, pupa and larva of S. (E.) orbitale LUTZ, 1910, are presented; a full description of S. (E.) pintoi n. sp. based on male, female, pupa and larva is given; S. nigrimanum MACQ. 1837 is considered a sp. inquirendae.