Contribution to the knowledge of flat bugs from the temperate south america (hemiptera: heteroptera)

New Aradidae findings as localities and provinces are given from Argentina. Mezira regularis Champion is mentioned for the first time for this country. This work includes a result of studied material of Aradidae that belongs to the Museo de La Plata and Fundacion Miguel Lillo (Argentina).Fil: Contreras, Eugenia Fernanda. Universidad Nacional de Jujuy. Instituto de Biología de la Altura; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta; ArgentinaFil: Neder de Román, L. E.. Universidad Nacional de Jujuy. Instituto de Biología de la Altura; ArgentinaFil: Coscarón, M. C.. Universidad Nacional de Jujuy. Instituto de Biología de la Altura; Argentin

Contribution to the knowledge of flat bugs from the temperate south america (hemiptera: heteroptera)

New Aradidae findings as localities and provinces are given from Argentina. Mezira regularis Champion is mentioned for the first time for this country. This work includes a result of studied material of Aradidae that belongs to the Museo de La Plata and Fundacion Miguel Lillo (Argentina).Fil: Contreras, Eugenia Fernanda. Universidad Nacional de Jujuy. Instituto de Biología de la Altura; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta; ArgentinaFil: Neder de Román, L. E.. Universidad Nacional de Jujuy. Instituto de Biología de la Altura; ArgentinaFil: Coscarón, M. C.. Universidad Nacional de Jujuy. Instituto de Biología de la Altura; Argentin

Simulium (Inaequalium) marins, a new species of black fly (Diptera: Simuliidae) from inselbergs in Brazil

A new species of black fly, Simulium (Inaequalium) marins (Diptera: Simuliidae), is described based on the male, female, pupa and larva. This new species was collected from two localities: a small stream on the Pico dos Marins, a high mountain with granite outcrops in Piquete County, state of São Paulo, and in a small stream in the Serra dos Órgãos National Park, state of Rio de Janeiro, Brazil

Cytotaxonomy of Simulium cauchense Floch & Abonnenc and Simulium quadrifidum Lutz (Diptera: Simuliidae) in Brazilian Amazonia

Simulium cauchense Floch & Abonnenc and Simulium quadrifidum Lutz are widely distributed in the Amazon region and are morphologically similar at the larval and pupal stages. Chromosomally, these species are readily distinguished by the position of the nucleolar organizer, which is in the short arm of chromosome I in S. cauchense and in the long arm of chromosomes III in S. quadrifidum. They also differ by three fixed inversions. Sex chromosomes are undifferentiated in both species. Chromosomal resolution of the two species allowed us to evaluate four structural features previously used as diagnostic aids at the larval stage. Characters that distinguish larvae of the two species are the number of branches and branching patterns of the dorsal abdominal setae and the dark band on each primary fan. Branching patterns of the gill histoblasts were often diagnostic, with S. quadrifidum exhibiting more proximal branching and S. cauchense more distal branching. Sites where both species occurred sometimes had larvae with one petiole branching proximally and the other distally; in these cases examination of the chromosomes permitted assignment of the specimen to species. Pigmentation patterns of larvae, on the other hand, are highly variable. Color typically is sex linked in both species

Description of some immature stages of Nabis (Tropiconabis) capsiformis (Hemiptera: Nabidae) Descripción de algunos estadios inmaduros de Nabis (Tropiconabis) capsiformis (Hemiptera: Nabidae)

Instars III-V of Nabis (Tropiconabis) capsiformis Germar are described and illustrated, based on specimens from La Pampa, Argentina (new record).Se describen e ilustran los estadios III-V de Nabis (Tropiconabis) capsiformis German, con base en ejemplares de La Pampa, Argentina (nueva cita)