Revelando os paederinae (coleoptera: staphylinidae) da amazônia brasileira, com ênfase na coleção de invertebrados do instituto nacional de pesquisas da amazônia (INPA)

Abstract

The subfamily Paederinae (Coleoptera: Staphylinidae) is highly diverse and widely distributed, especially in tropical regions such as the Amazon. Despite its ecological importance, its diversity is still underestimated and therefore poorly known in the Brazilian Amazon due to taxonomic challenges and identification difficulties. This study reviewed material already collected and deposited in various collections with the aim of identifying new genus records, updating information on the geographic distribution of the subfamily, and providing diagnoses for genera that have been studied little or lack recent data. Seven new genus records are reported for the Amazon region, four of which are new to Brazil: Ronetus Blackwelder, 1943, Stiliphacis Bierig, 1938, Stilicopsis Sachse, 1852, and Synecitonides Reichensperger, 1936. These findings raise the total number of known genera in the Brazilian Amazon to 52, representing 81.25% of the genera recorded in Brazil, for the subfamily. Additionally, genus records are expanded across several Amazonian states, with approximately 2,300 specimens analyzed. The genera with the highest representation in terms of number of individuals were Scopaeus Erichson, 1839b, Palaminus Erichson, 1839a, Pseudolathra Casey, 1905, and Pinophilus Gravenhorst, 1802. For the first time, an identification key for the genera of the Brazilian Amazon is presented, marking the first key available for the Neotropics. For several of these genera, a diagnosis is provided for the first time since their original description.