Interactions between dryinids and their hosts are poorly known in the Neotropical region, especially for the Brazilian fauna. This study aims to expand this incipient knowledge by describing a new species of Anteon Jurine and four new species of Gonatopus Ljungh reared from parasitized leafhoppers (Cicadellidae) collected in the state of Paraná, Southern Brazil. The new species, A. elianeae sp. nov., G. josei sp. nov., G. meloi sp. nov., G. pinhalensis sp. nov. and G. taquarensis sp. nov., are associated with leafhopper species of the subfamilies Iassinae (tribe Gyponini) and Deltocephalinae (tribes Deltocephalini and Pendarini). Both sexes of G. josei sp. nov. and G. taquarensis sp. nov. were associated and males are described, representing the first sexual association based on reared specimens from Brazil. We record for the first time species of Dryinidae parasitizing the leafhoppers species: Curtara concava, Gypona lita and Reticana lineatta (Gyponini), Graminella striatella (Deltocephalini) and Copidinomus vittulatus (Pendarini). All known records in the Neotropic of both Anteon and Gonatupus species associated with host are compiled, all known records of parasitoids of gyponines are reviewed, and the interactions with dryinids are discussed. Each new species is diagnosed and described, and illustrations of both dryinids and parasitized hosts are provided.

The Brazilian species of Mitrapsylla, a Neotropical genus of jumping plant-lice, are reviewed. Twenty-seven species are described as new, and one species originally described from Panama is recorded for the first time from Brazil. This brings the number of Brazilian species from 12 to 40 and for the Neotropical region to 51. The new species are illustrated and Mitrapsylla ceplaciensis (White & Hodkinson), M. cubana Crawford and M. itaparica (Crawford) are redescribed. A key for the identification of males is provided for the Brazilian species and information is given on host-plants, habitat and distribution. Host-plants, all Leguminosae, are confirmed for 15 of the new species. The genus is predominantly tropical but extends into the subtropical states in South Brazil.

Jumping plant-lice (Hemiptera: Sternorrhyncha: Psylloidea) are a group of phloem-feeding insects with nearly 4000        described species. Previous records from Colombia comprise 19 genera of all eight known families. The revision of material deposited in six Colombian and three foreign museums yielded another nine genera that constitute new country records. Material from 16 departments was examined. Each genus is diagnosed and information is provided on biology, damage and host-plants. Local distribution maps and a generic key for the identification of adults are provided.

Two new Brazilian sharpshooter species of the genus Tretogonia Melichar, 1926 are described and illustrated: Tretogonia diminuta sp. nov. and T. elegantula sp. nov., both from the State of Paraná. A redescription of T. dentalis Emmrich, 1988 is provided based on a male from the State of Mato Grosso do Sul. This is the first Brazilian record of T. dentalis, a species originally described from Paraguay. Photographs and line drawings are provided for the three species, as well as notes on the taxonomy and biology of the genus.

No abstract

Three new Brazilian sharpshooter species of the genus Geitogonalia Young, 1977 are described: G. buccina sp. nov., G. piei sp. nov., and G. tetracorni sp. nov. The first species is known from the states of Rio de Janeiro and Minas Gerais, whereas the second and third species are from the state of Paraná. We provide descriptions of the male and female (except for G. piei), photographs and illustrations, as well as a revised diagnosis of the genus and a key to the five known species.