Descriptions of seven new Acrogonia species from South America (Hemiptera: Cicadellidae: Cicadellinae: Proconiini).

Seven new species of the economically important sharpshooter genus Acrogonia Stål are described and illustrated: A. falcata sp. nov.

Phylogenetic analysis of the sharpshooter genus Subrasaca Young, 1977 (Hemiptera, Cicadellidae, Cicadellini).

The South American sharpshooter genus Subrasaca comprises 14 species. Some species of this genus are quite common in the Brazilian Atlantic Rainforest. In this paper, a phylogenetic analysis of Subrasaca, based on a matrix of 20 terminal taxa and 72 morphological characters of the head, thorax, and male and female genitalia, is presented.

Descriptions of three new Brazilian Subrasaca species, redescription of S. nigriventris (Signoret, 1855) and a key to males of the genus (Hemiptera: Cicadellidae: Cicadellini).

Three new species of the Neotropical sharpshooter genus Subrasaca Young, 1977 from Southeastern and Southern Brazil are described and illustrated: S. diminuta sp. nov.

Descriptions of two new Brazilian Subrasaca species and redescriptions of S. flavolineata (Signoret, 1855) and S. curvovittata (Stål, 1862) comb. nov. (Hemiptera: Cicadellidae: Cicadellini).

The species of Subrasaca Young, 1977 with longitudinal dark brown to black stripes on the forewings are reviewed. Two new taxa are described and illustrated: S. constricta sp.

Genetic diversity and geographic differentiation of disjunct Atlantic and Amazonian populations of Psychotria ipecacuanha (Rubiaceae).

Ipecac (Psychotria ipecacuanha) is a perennial, medicinal herb that grows in the understory of semi-deciduous tropical forests in the Neotropics. Ipecacs present a widely disjunct distribution, with two of its three ranges occurring in Brazil. The Amazonian populations are at least 1600 km from the nearest Atlantic populations.