Revision of the neotropical species of empididae (Diptera) described by Mario Bezzi: IX. The species described in Atrichopleura Bezzi and the description of a new species

Abstract

This work continues the redescription of Neotropical species described by Mario Bezzi in the family Empididae. Atrichopleura Bezzi belongs to the tribe Hilarini (subfamily Empidinae), a tribe that has been characterized in Sinclair & Cumming (2006) and in a recent contribution (Rafael 2011). The genus contains 26 species distributed in different regions of the Southern Hemisphere (Neotropics, Afrotropics and Australasian). In the Neotropical Region, 23 species are recorded, all from South America (Yang et al. 2007). MATERIAL AND METHODS Bezzi (1909) described Atrichopleura including four Neotropical species whose types are deposited in the Staatlisches Museum für Tierkunde (SMT), Dresden, Germany. All the types are redescribed herein. The terminology is according to McAlpine (1981), as presented in the first paper of this series (Rafael & Ale-Rocha 1995), now updated after Cumming & Wood (2009). Setae on symmetrical structures that are represented in dorsal view are indicated only on one side whenever the same pattern is repeated on the other side. In the lists of material examined, supplementary information that was omitted from the labels is enclosed in brackets. RESULTS Atrichopleura Bezzi Diagnosis. Members of Atrichopleura are characterized by the following combination of characters: dichoptic in both sexes; frons with bristles; postpedicel equal to or longer than stylus, proboscis vertical and short, usually shorter than height of head; laterotegite without setae; costal vein reaching the apex of the wing, Sc vein incomplete or nearly so; vein R 1 distally swollen; pterostigma located at the apex of vein R 1 ; vein R 4 +5 simple; legs simple, without long setae in female specimens; proctiger complex with the cercus, hypoproct and subepandrial sclerite with clasping function; keel-shaped hypandrium on the posterior margin and covering the phallus.