Sistemática de Atalophlebiinae ( Insecta: Ephemeroptera, Leptophlebilidae) no Escudos das Guianas e Brasileiro (Rondônia).

Abstract

The ncotropical Ephemeroptera share an ancient heritage determined by the isolation of the Guiana Shield and the Brazilian Shield, presenting great similarities with the more primitive Ephemeroptera, being very important for biogeographical, evolutionary and phylogenetic studies, and can also be used as indicators of water quality. The present study aims to identify the Ataloplilebiinae from the Guiana and Brazilian Shield region (in Rondônia); the description and redescription of taxa; the provision of geographic registration data; the creation of an identification key for the genera and species of the region, and the establishment of a reference collection for the order. For this, nymphs from different locations in the aforementioned area were studied, which were sorted, identified, drawn and described, the mouthparts were dissected to be drawn and described. An identification key was elaborated and a cladogram created to represent the phylogenetic relationship of the genera in the area under study. As a result, the subfamily Atalophlebiinae was recorded for the first time in Rondônia (Brazilian Shield); Two of the eight genera of Atalophlebiinae already registered for the Guiana Shield, in Brazil, were recognized: Sirnothraulopsis and Ulmeritoides; Needharnella and Leenlvuaria were marked as the first record for the region; the genus Leenívaaria was redescribed and a new species was registered; a dichotomous key for genera was proposed, and the phylogenetic relationship of the Atalophlebiinae was established, confirming the relationship between Leenlvaaria and Needhamella.