Cimbicidae (Hymenoptera, ‘ Symphyta’) in the Paleogene: revision, the new subfamily Cenocimbicinae, and new taxa from the Eocene Okanagan Highlands Author Archibald, S. Bruce 0000-0002-4397-2497 Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, 2020 - 2207 Main Mall, Vancouver, British Columbia, Canada, V 6 T 1 Z 4, Canada. bruce. archibald @ ubc. ca; https: // orcid. org / 0000 - 0002 - 4397 - 2497 & Department of Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V 5 A 1 S 6, Canada Museum of Comparative Zoology, 26 Oxford Street, Cambridge, Massachusetts, 02138, United States of America & Royal British Columbia Museum, 675 Belleville Street, Victoria, British Columbia, V 8 W 9 W 2, Canada bruce.archibald@ubc.ca Author Rasnitsyn, Alexandr P. A. A. Borissiak Paleontological Institute, Russian Academy of Sciences, Moscow 117647, Russia & Invertebrate Paleontology Department, Natural History Museum, Cromwell Road, London SW 7 5 BD, United Kingdom Corresponding author. bruce. archibald @ ubc. ca text Zootaxa 2023 2023-05-04 5278 1 1 38 http://dx.doi.org/10.11646/zootaxa.5278.1.1 journal article 10.11646/zootaxa.5278.1.1 1175-5326 7894826 BE0A07DB-170A-4B72-8178-9B8144C1FBF6 Leptostigma n. gen. http://zoobank.org/ urn:lsid:zoobank.org:act: 531F3657-F3D9-4A4D-86B7-1C146E74D627 Figs. 3A–D, 3G–K , 5–21 . Type species. Leptostigma brevilatum n. sp. Diagnosis. Distinguished from Cenocimbex by lacking dark triangular sclerite on R basal to pterostigma reaching 1-Rs+M near 1m-cu (absent or undetectable being small, pale); wing narrower (length/width 2.8 or more); cell 3rm long (2r-m to 3r-m distinctly longer than length of 3r-m); hind wing with cu-a well before middle of cell mcu; distinguished from Allenbycimbex by pterostigma narrow, maximum height about equal to height to C to R basal to pterostigma. Species included . The type species and L. longiclava n. sp. , L. longipallidum n. sp. , L. longitenebricum n. sp. , L. proxivena n. sp. , L. fasciatum n. sp. , and L. alaemacula n. sp. Etymology. From the Greek leptos , meaning thin, and stigma , for the pterostigma. The name is neuter (see Examples below Art. 30.1.2, ICZN 1999 ). Locality and age. Republic , Washington, United States of America , Tom Thumb Tuff Member of the Klondike Mountain Formation exposure A0307 ; and McAbee, British Columbia , Canada , Hoodoo Face beds; mid-Ypresian .