Luiz A. A. Costa

Morphological patterns of the heteropycnotic chromatin and nucleolar material in meiosis and spermiogenesis of some Pentatomidae (Heteroptera)

Pentatomidae is a family of Heteroptera which includes several agriculture pests that have had different aspects of their meiosis and spermiogenesis analyzed. In the present study we analyzed the morphological patterns of the heteropycnotic chromatin and the nucleolar material of Mormidea v-luteum, Oebalus poecilus and Oebalus ypsilongriseus. The three species presented multilobate testes, with three lobes in M. v-luteum and four in the Oebalus species. A karyotype with 2n = 14 chromosomes (12A + XY) was observed in the three species. Several characteristics were common to the three species, such as the absence of a testicular harlequin lobe (a lobe which produces different types of spermatozoa, previously considered a general characteristic of this family), late migration of the sex chromosomes and semi-persistence of the nucleolus. The three species also shared some characteristics regarding the patterns of the heteropycnotic chromatin and nucleolar material, but differed in others mainly related to the location of the heteropycnotic chromatin in the spermatids and the morphology and distribution of the nucleolar material at zygotene. The differences were always between species from different genera, suggesting a relationship with their genetic divergence.

Um novo gênero e espécie de Peiratinae de Nova Friburgo, Rio de Janeiro, Brasil (Hemiptera, Heteroptera, Reduviidae)

Zeraikia novafriburguensis gen. nov., sp. nov. are described. A key for New World genera of Peiratinae is given.

Pothea furtadoi sp. nov. (Hemiptera, Heteroptera, Reduviidae, Ectrichodiinae) de Mato Grosso e Minas Gerais, Brasil

A new species of the genus Pothea Amyot & Serville, 1843, from Mato Grosso and Minas Gerais, is described and illustrated.

First report and morphological redescription of Teleonemia morio (Stål) (Hemiptera, Tingidae) in Annona squamosa L. (Annonaceae) in Brazil

First report and morphological redescription of Teleonemia morio (Stal) (Hemiptera, Tingidae) in Annona squamosa L. (Annonaceae) in Brazil. This is the first report of a severe attack of Teleonemia morio (Stal, 1855) (Hemiptera, Heteroptera, Tingidae) on Annona squamosa L. (custard apple), causing up to 80% of losses of infested trees. In order to facilitate the identification of this insect pest, the adult female of T. morio is redescribed based on specimens collected in Palmeira dos Indios, Alagoas, Brazil.

Brontostoma bahiensis sp. nov. de Ectrichodiinae (Hemiptera, Heteroptera, Reduviidae) do Estado da Bahia, Brasil

A new species of the genus Brontostoma Kirkaldy, 1904, from the State of Bahia, Brazil, is described.

Caprilesia almirantiana gen. nov. and sp. nov. of Saicinae from Brazil (Hemiptera, Reduviidae)

Caprilesia gen. nov. and C. almirantiana sp. nov. (type species) are described from Brazil, Bahia. Illustrations of the holotype and also a key for the American genera of Saicinae are presented.

Le genre Anomalocornis Carvalho & Wygodzinsky 1945 (Heteroptera: Miridae: Phylinae), revision taxonomique, description d’une espèce nouvelle et affinités avec les palmiers néotropicaux

Résumé Le genre néotropical Anomalocornis Carvalho & Wygodzinsky 1945, est révisé. Les espèces A. geijskesi Carvalho & Wygodzinsky 1945, A. ariasi Carvalho 1982, A. tucuruiensis Carvalho 1984, A. rondoniensis Carvalho 1984, A. couturieri Carvalho & Costa 1993 and A. peyreti Couturier & Costa 2002 sont redécrites, leurs femelles, ainsi qu’une nouvelle espèce de Colombie, A. gentyi n. sp. sont décrites. Les espèces se différencient entre elles par leur taille, la coloration du corps, la morphologie et la coloration des articles I et II de l’antenne du mâle et par la structure des génitalia. Les différentes espèces sont originaires du Brésil, de Colombie, de l’Equateur, du Pérou et du Surinam. Toutes les espèces, excepté A. ariasi, dont la plante-hôte n’est pas connue, vivent sur les inflorescences de palmiers.

Two new species of Zyzzogeton Breddin and the female of Z. haenschi Breddin (Hemiptera: Cicadellidae: Cicadellinae: Proconiini).

Two new species of the leafhopper genus Zyzzogeton Breddin are described and illustrated: Z. emmrichi sp. nov. from Colombia and Z. guatemalensis sp. nov. from Guatemala. The two new taxa can be distinguished from the three other known species of the genus by their colour patterns and by the form of the apical processes of the aedeagus. A key to the species of Zyzzogeton is provided. The genus is newly recorded from Guatemala, which is its northernmost known record. Taxonomic and morphological data on Zyzzogeton and its species are added, including the first description of the female genitalia in the genus (Z. haenschi Breddin).

Synopsis of the Chryxinae (Hemiptera, Reduviidae)

Synopsis of the Chryxinae with keys to the genera and species of the subfamily are presented. Chryxus bahianus sp. nov. and the male of Wygodzinskyella travassosi (Lent & Wygodzinsky, 1944) are described.

Mirídeos neotropicais: CCCXCIX. Espécies novas da América do Sul (Hemiptera)

Six new species of Hemiptera, Miridae, from South America are described as follows: Chrysodasia pronotata, sp.n.; Ellenia pallida, sp.n.; Horcias niger, sp.n.; Horciasoides ecuatorianus, sp.n.; Neostenotus villensis, sp.n.; Tropidosteptes scutellatus, sp.n. Figures of habitus and male genitalia are included.