Abstract:
This study presents the results of a systematic research on 108 specimens of fossil insects including the order “Blattaria”, Mantodea and Orthoptera originating from laminated limestone from the Lower Cretaceous Crato Formation of Northeast Brazil. The exceptionally well preserved and articulated material allows for the morphology not only of the forewings, but also (to a large extent) of the hind wings to be analyzed. The originally described groups are emended with new data and supplemented with drawings and photographs. Altogether, 16 genera including 37 species are described in this study. Of these, 13 species are as of yet unnamed. Furthermore, the descriptions of the following taxa have been revised: Ponopterix maxima Bechly, 2007 (family Umenocoleidae Chen et Tian, 1973), Araripeblatta Mendes, 2000 (family Araripeblattidae Martins-Neto et al., 2010), Mesoblattina limai Pinto & Purper, 1986 (family Blattellidae Karny, 1908), Bouretia Martins-Neto, 2001 (family Bouretidae Martins-Neto, 2001) and Family Araripelocustidae Martins-Neto, 1995. This study furthermore includes the first description of the following taxa: The first Chaeteessa Burmeister, 1838 (Family Chaeteessidae Handlirsch, 1920; Mantodea) in the Crato Formation, the first Tettigoniidae Krauss, 1902 in the Crato Formation (as well as being the first description in the Cretaceous as a whole) and the first descriptions of Haglidae Handlirsch, 1906 (with two new species) and Prophalangopseidae Kirby, 1906 (with one new species) in the Crato Formation (both of these families belong to the Superfamily Hagloidea Handlirsch, 1906). Additionally, new data concerning the morphology, taphonomy and taxonomic diversity of the studied taxa are given and discussed.