Taxonomic study of the genus Eloeophila Rondani, 1856 of Japan (Limoniidae Diptera) Author Kato, Daichi text Zootaxa 2021 2021-07-01 4995 3 425 451 journal article 10.11646/zootaxa.4995.3.2 1175-5326 5057235 81231758-D126-4B6A-8CB6-FC29D86EC61F Eloeophila persalsa ( Alexander, 1940 ) ( Figs 9A–G , 13D ) Limnophila ( Eloeophila ) persalsa Alexander, 1940: 46 . Type locality: North Korea , Seren Mountains . Limnophila ( Eloeophila ) hidana Alexander, 1970: 71 . Syn. nov. Type locality: Japan , Honshu , Gifu , Mt. Ontake-san . Eloeophila (s.str.) persalsa : Savchenko & Krivolutskaya (1976: 62) . Eloeophila persalsa : Podenas et al . (2020: 515) ; Oosterbroek (2021) . Eloeophila hidana : Nakamura (2014: 12) ; Oosterbroek (2021) . Material examined. HOLOTYPE female, JAPAN , Honshu , Hida ( Gifu ), Ontake , 27.VII.1959 , Mishima ( E. hidana / USNM ) . PARATYPES : NORTH KOREA : 1 male , Seren Mts. , 3000 feet , 5.VII.1938 , Yankovsky ( E. persalsa / USNM ) ; 1 male , same data as previous except 3700 feet , 30.VI.1938 . Non-type material: JAPAN : [Honshu] 2 males , Nagano , Sakae-mura , Sakai , Koakazawa-gawa River , Alt. 1320–1500 m , 9.VII.2019 , D. Kato ( BLKU ); 2 females , same data as previous except 23.VII.2019 . Short description. General coloration ocherous to brown ( Fig. 9A ). Head. Grey to dark grey. Antenna about 2.5 times as long as head. Scape dark grey. Succeeding segments pale brown. Thorax. Unmarked, sometimes weakly greyish. Wing ( Fig. 9B ) tinged with pale brown, sparsely patterned with dark brown: costal region with seven dark spots; tips of most veins at wing margin and all crossveins each with dark spot or seam. Legs mainly yellow; each femur with dark tip, about three times as long as wide. Halter pale yellow. Abdomen. Pregenital segments weakly dark on posterior part of each segment. Male terminalia ( Figs 9C–G ) with outer gonostylus bearing small apical claw-shaped lobe directed medially; outer margin serrate on distal 1/3; inner margin on apical part rounded and serrate ( Fig. 9D ). Paramere with mesal-apical lobe flat and wide, about 1.5 times as long as wide and slightly longer than lateral lobe, rounded and broad on distal part ( Fig. 9G ). Aedeagus almost straight, about six times as long as wide in lateral view ( Fig. 9E ). Apodeme of vesica indistinct ( Fig. 9E ). FIGURE 9. Eloeophila persalsa ( Alexander, 1940 ) . A. habitus, lateral view; B. wing; C. male terminalia, dorsal view; D. outer gonostylus, ventral view; E. aedeagal complex, dorsal view; F. same, lateral view (left = dorsal); G. paramere, dorsal surface. Scale bars: A–B, 2 mm; C–G, 0.1 mm. Measurements. Male (n = 4): body length: 5.5–7.5 mm ; wing length: 6.5–8.0 mm. Female (n = 3): body length: 7.0– 7.7 mm ; wing length: 7.5–8.8 mm . Distribution. Japan (Honshu), Kuril Islands (Kunashir and Shikotan Is) ( Fig. 13D ), Russia , North Korea , Mongolia , and Kazakhstan . Remarks. This species is very similar to a Japanese species, E. hidana , whose male was unknown. As a result of examining the males, E. hidana is considered to be a synonym of E. persalsa , based on the structure of male terminalia. In terms of general appearance, E. persalsa is somewhat similar to E. subaprilina , but is differentiated from it by the following characters: notum and pleuron unmarked or almost so (distinctly patterned with dark markings in E. subaprilina ); wing with one dark spot on distal part of A 1 ( Fig. 9B ) (two dark spots in E. subaprilina ( Fig. 10B )); knob of halter pale yellow (dark brown in E. subaprilina ); outer gonostylus without lobe besides apical lobe ( Fig. 9D ) (with small lobe at outer margin near tip besides apical lobe in E. subaprilina ( Fig. 10D )).