Two new species of the genus Dentigaster Zettel (Hymenoptera, Braconidae, Cheloninae) from Brazil.

Two new species of the genus Dentigaster Zettel, 1990 are described from brazilian fauna: Dentigaster medeirosi Dias & Penteado-Dias sp. nov., from Atlantic Forest and Dentigaster fernandesi sp.

New species and new records of Clistopyga (Ichneumonidae: Pimplinae) in Brazil.

Clistopyga magninsula sp. nov. (Pimplinae, Ichneumonidae) from Brazil is described as new.

New Species of Distatrix Mason, 1981 (Hymenoptera: Braconidae) from Brazil, with biological notes.

A new species of the genus Distatrix Mason, 1981 (Hymenoptera: Braconidae) from Brazil is described and illustrated. This parasitoid was reared from larvae of Argyrotome paraguayaria Schaus, 1927 (Lepidoptera: Geometridae: Palyadini), feeding on Myrsine umbellata Mart. (Primulaceae).

The influence of fire on the assemblage structure of foraging birds in grasslands of the Serra da Canastra National Park, Brazil.

Grasslands are the most threatened physiognomies of the Cerrado biome (Brazilian savanna), a biodiversity hotspot with conservation as a priority. The Serra da Canastra National Park protects the most important remnants of the Cerrado's southern grasslands, which are under strong anthropogenic pressure. The present study describes the structure of bird assemblages that directly use food resources in burned areas, comparing areas affected by natural fire to the areas where controlled fires were set (a management strategy to combat arson).

Sensitivity of understorey bird species in two different successional stages of the lowland Atlantic Forest, Brazil.

The Atlantic Forest has a high destruction rate and there is little information available on some aspects of the neotropical bird biology. Changes in environment are important factors that affect the resources available to birds. We compared the species sensitivity level of understorey birds in two areas in distinct successional stages (primary and secondary sections).