New Hypogastruridae (Collembola) and first record of Cephalachorutes Bedos & Deharveng 1991 (Collembola: Neanuridae) for the Neotropical Region

摘要

The study of the Poduromorpha fauna of a sample from Parana State, Brazil, and multiple samples from high altitude mountains of Southeast Brazil provided important data on Hypogastruridae, including a new record for Brazil of Ceratophysella engadinensis (Gisin 1949) and two new species belonging to Xenylla Tullberg 1869, X. manuelae sp. n. and X. wandae sp. n. These last present a pair of remarkable creased cuticular structures on abdominal tergite IV, apparently unique among the genus. In addition, a new species of Pseudachorutinae, Cephalachorutes anneae sp. n., is the first Neotropical record of Cephalachorutes Bedos & Deharveng 1991, corroborating its holotropical distribution. The set of characteristics displayed by this new species required the expansion of the genus diagnosis.