Taxonomic studies on Culex (Melanoconion) coppenamensis Bonne-Wepster & Bonne (Diptera: Culicidae), and description of two new species from Brazil

Two new species,Culex (Melanoconion) alinkios and Culex (Melanoconion) symbletos are described and defined based on morphological features of the male genitalia. The former is from Vale do Ribeira, Atlantic Forest, southeastern of the state of São Paulo, Brazil, and belongs to the Bastagarius subgroup. The latter is from the Parque Nacional do Jaú, state of Amazonas, Brazil, and belongs to the Inhibitator subgroup and is similar to Cx. mesodenticulatus Galindo and Mendez. Diagnostic characters for the identification of the adult males of the species are provided. Two morphological forms (Form 1 and 2), which are similar to Cx. coppenamensis, were also found in the Parque Nacional do Jaú. Form 1 is described and compared with the new species from Vale do Ribeira and Form 2.

Two new Culicoides of the paraensis species group (Diptera:Ceratopogonidae) from the Amazonian region of Peru

Two new species of the Culicoides paraensis species group, C. diversus Felippe-Bauer and C. peruvianus Felippe-Bauer, are described and illustrated based on female specimens from Amazonian region of Peru. A systematic key, table with numerical characters of females, and distribution of species of the C. paraensis group are given.

Redescription of Nyssomyia intermedia (Lutz & Neiva, 1912) and Nyssomyia neivai (Pinto, 1926) (Diptera: Psychodidae)

The phlebotomine sand flies Nyssomyia intermedia and Nyssomyia neivai are the probable vectors of American tegumentary leishmaniasis in the Southern and Southeastern regions of Brazil. These species form a complex, being difficult to separate between either females or males of the two members based on recognized morphological characteristics. Both N. intermedia and N. neivai are redescribed here in the search for characters that facilitate their correct identification. It was possible to differentiate females by means of spermathecal characteristics. Males could be separated with confidence by the tips of the genital filaments, which have the form of a deep spoon, the angle of the concavity being well accentuated in N. intermedia and much shallower in N. neivai.