Synopsis of the genus Ulomorpha Osten Sacken, 1869 (Diptera, Limoniidae) in Japan Daichi Kato 1 , Kozo Watanabe 2 , Levente-Péter Kolcsár 2 1 Echigo-Matsunoyama Museum of Natural Sciences, ‘Kyororo’, 1712-2 Matsunoyama, Tôkamachi, 942- 1411, Japan 2 Center for Marine Environmental Studies (CMES), Ehime University, Matsuyama, Ehime 790-8577, Japan Corresponding author: Levente-Péter Kolcsár (kolcsar.peter@gmail.com) Academic editor: T. Dikow  |  Received 17 April 2020  |  Accepted 29 October 2020  |  Published 30 November 2020 http://zoobank.org/A1116A78-2C11-41FB-A8B3-15AB7369A942 Citation: Kato D, Watanabe K, Kolcsár L-P (2020) Synopsis of the genus Ulomorpha Osten Sacken, 1869 (Diptera, Limoniidae) in Japan. ZooKeys 999: 147–163. https://doi.org/10.3897/zookeys.999.52831 Abstract Japanese species of the genus Ulomorpha Osten Sacken, 1869 are revised and U. amamiana Kato & Kolcsár, sp. nov. and U. longipenis Kato & Kolcsár, sp. nov. are described. A key to the four Japanese species of the genus is provided, with images of habitus and wings, and drawings of their male terminalia. Ulomorpha amamiana Kato & Kolcsár, sp. nov. is the frst representative of the genus discovered from the Oriental region. Keywords Crane fies, male terminalia, new species, taxonomy, Tipuloidea Introduction Ulomorpha Osten Sacken, 1869 is a small genus of the subfamily Limnophilinae and so far includes two Palaearctic and eight Nearctic species (Oosterbroek 2020). Te adults are characterized by having conspicuous macrotrichiae on wing cells and cell R 3 sessile to subsessile. A similar condition is present in the limnophiline genera Adelpho- ZooKeys 999: 147–163 (2020) doi: 10.3897/zookeys.999.52831 https://zookeys.pensoft.net Copyright Daichi Kato et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. reSeArCh ArtICLe Launched to accelerate biodiversity research A peer-reviewed open-access journal