Taxonomic study of the genus Epiphragma of Japan (Diptera: Limoniidae) Author Kato, Daichi Echigo-Matsunoyama Museum of Natural Sicences, ‘ Kyororo’, 1712 - & Matsunoyama, Tôkamachi, 942 - 1411, Japan Author Nakamura, Takeyuki The Shirakami Institute for Environmental Sciences, Hirosaki University, Bunkyo-cho Author Tachi, Takuji Matsunoyama, Tôkamachi, 942 - 1411, Japan text Acta Entomologica Musei Nationalis Pragae 2020 2020-08-01 60 2 449 461 journal article 8107 10.37520/aemnp.2020.29 de370c5d-f931-48e0-b4ed-3803bc22f2a4 1804-6487 4489408 5CF7D8D7-2AEF-4AFB-9DB2-80A8FB525144 Key to the Japanese species of Epiphragma 1 Wing marking on outer end of cell d solid, without subhyaline areas, center of cell d broadly subhyaline ( Figs 17 , 31 ). .................................................................... 2 – Wing markings on inner and outer ends of cell d with subhyaline areas, center of cell d with brownish marking ( Figs 2 , 9 , 24 , 38 ). ................................................... 3 2 Each femur usually with two bands distally; mediotergite without V-shaped lighter area; male genitalia with interbase slender, bearing several teeth near tip ( Fig. 33 ); female ovipositor with sternite 8 bearing linear apodeme on its entire length ( Fig. 34 ). ........................... ..................................... E. subinsigne Alexander, 1920 – Each femur with one brown band near tip; mediotergite with V-shaped lighter area; male genitalia with interbase somewhat stout, curved medially and flattened near tip ( Fig. 19 ); female ovipositor with sternite 8 bearing linear apodeme on posterior half ( Fig. 20 ). ..... ................................................ E. kempi Brunetti, 1913 3 Each femur usually with two bands distally; male genitalia with interbase stout on base, rod shorter than base ( Fig. 11 ); female ovipositor with furca slender Y-shaped ( Fig. 13 ). ............. E. gracilistylus Alexander, 1933 – Each femur with one brown band near tip; male genitalia and female ovipositor not as above. ..................... 4 4 Femoral band at tip or almost so; wing markings distinctly outlined with darker margins ( Fig. 24 ); halter entirely light yellow; male genitalia with interbase long and straight ( Fig. 26 ), extending beyond tip of aedeagus ( Fig. 25 ); female ovipositor with sternite 8 bearing linear apodeme in whole length ( Fig. 27 ). ..................... ............................... E. subfascipenne Alexander, 1920 – Femoral band subapical; wing markings bordered with darker margins on anterior half of wing or without darker margins ( Figs 2 , 38 ); halter darkened at base of knob; male genitalia with interbase not as above. ...... 5 5 Circular marking enclosing base of Rs with distinct marking inside, cell d with three subhyaline spots ( Fig. 38 ); male genitalia with interbase S-curved ( Fig. 40 ); female ovipositor with furca strongly widened and membranous on anterior part ( Fig. 42 ). ......................... ................................. E. trichomerum Alexander, 1955 – Circular marking enclosing base of Rs with narrow seam inside, restricted at base of Rs, cell d with two subhyaline spots ( Fig. 2 ); male genitalia with interbase L-shaped ( Fig. 4 ); female ovipositor with furca narrowed and sclerotized on anterior part ( Fig. 6 ). ............ .................................................. E. amamiense sp. nov.