Systematic position of Thraulodes Ulmer 1920 (Ephemeroptera: Leptophlebiidae) and descriptions of new and little-known species Author Kluge, Nikita J. text Zootaxa 2020 2020-03-26 4756 1 1 142 journal article 10.11646/zootaxa.4756.1.1 4d48d52e-6505-4f62-909f-5da5c2cfb489 1175-5334 3736895 urn:lsid:zoobank.org:pub:9FF62616-A7FA-4331-AC51-0F534400631D Group alboniger Definition. Larva of the single species placed here, differs from all other Thraulodes by wider anterior transverse setal row on labrum ( Fig. 563 ) and opposite bent of tergalii ( Figs 585–588 ). Imago differs from all other Thraulodes by very compact black preapical band on hind femur ( Figs 574, 575 ). Composition. One species, Th. alboniger sp. n. is described here. Variability of imaginal coloration ( Figs 574, 575 ) allows to assume that the type series consists of more than one species. To verify this, it is necessary to rear from larvae imagines of the light form ( Figs 571, 573, 574 ).