Fauna de ulidiídeos (Diptera: Ulidiidae) do dossel da floresta nacional de Palmares, Altos, Piauí, Brasil

Abstract

Ulidiidae (Diptera) has approximately 700 species described worldwide. Its representatives have variable length, between 2 and 14 mm; they are characterized by having coloration varied between yellow, green, bluish or even brown to black, with blue or green metallic shine; forehead usually smooth, but sometimes bumpy or wrinkled; thorax longer than wide; wings with patterns of dark spots or bands, sometimes completely hyaline. They live in various habitats, including the vegetation canopy, where the group is one of the most abundant in this extract. The general objective of this work was to survey the ulidiid fauna of the Palmares National Forest, Altos, in the state of Piauí. The collections were made in the canopy with the aid of a PET fly trap (reformulated). We analyzed 284 specimens of ulidiids distributed in five species and these in five genera, all recorded as monotypic: Acrosticta apicalis Williston; Notogramma cimiforme Loew; Pterocalla sp.; Pterocerina sp. and Xanthacrona bipustulata Wulp. These results represent the first survey of Ulidiidae in Palmares FLONA and constitute the first records of the family for the state of Piauí