Discovery of the most ancient member of family Tanyderidae (Diptera) from the Lower Jurassic (Sinemurian) of England Author Skibińska, Kornelia Author Krzemiński, Wiesław Author Coram, Robert A. text Zootaxa 2014 3857 1 125 130 journal article 10.11646/zootaxa.3857.1.6 f134bbeb-a658-4640-9687-04a86526fb23 1175-5326 227424 C11922A0-154E-4026-BEA2-261358622FD0 Genus Nannotanyderus Ansorge, 1994 Nannotanyderus comprises five species in addition to the one described herein: N. krzeminskii Ansorge, 1994 from the Toarcian of Grimmen and Dobbertin, Germany ; N. grimmenensis Ansorge & Krzemiński, 2002 from the Toarcian of Grimmen;? N. incertus Lukashevich, 2011 from the Upper Jurassic of Shar-Teg, Mongolia (this is based on an incomplete wing assigned to the genus with some reservation by the original author); N. kubekovensis Skibińska & Krzemiński, 2013 from the Upper Jurassic of Karatau, Kazakhstan (in Skibińska & Krzemiński, 2013 the specimen locality was incorrectly stated as Kubekovo); and N. ansorgei Krzemiński et al ., 2013 from Lower Cretaceous Lebanese amber. Members of this genus are distinguished by their tiny size, with a wing length of 2–4 mm . Moreover vein Sc does not extend beyond the mid–point of the wing and vein R2 is several times shorter than R2+3. Type species. Nannotanyderus krzeminskii Ansorge, 1994 ; Lower Jurassic (Toarcian), Germany ( Fig. 1 ).