A new long-winged pygmy grasshopper in Eocene Baltic amber raises questions about the evolution of reduced tegmenula in Tetrigidae (Orthoptera) Author Skejo, Josip https://orcid.org/0000-0002-2554-4499 IUCN / SSC Grasshopper Specialist Group, Zagreb, Croatia. & SIGTET-Special Interest Group Tetrigidae, Karlsruhe, Germany. & University of Zagreb, Faculty of Science, Zagreb, Croatia. skejo.josip@gmail.com Author Kasalo, Niko https://orcid.org/0000-0002-3139-6349 SIGTET-Special Interest Group Tetrigidae, Karlsruhe, Germany. & University of Zagreb, Faculty of Science, Zagreb, Croatia. niko.kasalo5@gmail.com Author Thomas, M. Jared https://orcid.org/0000-0002-4514-7757 Center for Paleontology, Illinois Natural History & State Geological Surveys, Prairie Research Institute, University of Illinois at Urbana-Champaign, 1816 South Oak Street, Champaign, Illinois 61820, USA. Author Heads, Sam W. Center for Paleontology, Illinois Natural History & State Geological Surveys, Prairie Research Institute, University of Illinois at Urbana-Champaign, 1816 South Oak Street, Champaign, Illinois 61820, USA. text Journal of Orthoptera Research 2024 2024-01-09 33 1 21 26 http://dx.doi.org/10.3897/jor.33.105144 journal article http://dx.doi.org/10.3897/jor.33.105144 1937-2426-1-21 1A982C52DF7C42FEAD3B376A3380829E F4AFA3B029D650488A8B76307DCFFD91 Tribe Rusmithini Skejo, Kasalo, Thomas & Heads trib. nov. Diagnosis. - Antenna composed of 19 or more antennomeres. Pronotum smooth and flat. Anterior margin of the pronotum obtusely triangular, not spine-like and not projected above the head. Tegmenula and alae present. Legs elongated. Mid-femora sulcate. Genicular and antegenicular teeth of the hind femora minute, genicular notch almost indistinct. Type genus. - Rusmithia Skejo, Kasalo, Thomas & Heads, gen. nov. Composition. - Two genera ( Danatettix and Rusmithia ), two species. Danatettix hoffeinsorum Thomas, Skejo & Heads, 2019 and the herewith described Rusmithia gorochovi Skejo, Kasalo, Thomas & Heads, gen. et sp. nov. Enigmatic Acrydium bachofeni (Zeuner, 1937), characterized by long wings ( Zeuner 1937 ) might also belong to this tribe as well as the genus Succinotettix Piton, 1938 (with one species, S. chopardi Piton, 1938) whose antennae are reported to have at least 19 segments ( Piton 1938 ). However, we refrain from transferring these genera to Rusmithini as we were unable to examine the type specimens.