Eloeophila subaprilina ( Alexander, 1919 )

Kato, Daichi, 2021, Taxonomic study of the genus Eloeophila Rondani, 1856 of Japan (Limoniidae Diptera), Zootaxa 4995 (3), pp. 425-451 : 442-444

Eloeophila subaprilina ( Alexander, 1919)

( Figs 10A–G , 13E )

Limnophila (Ephelia) subaprilina Alexander, 1919: 340 .

Type locality: Japan, Honshu, Tokyo, Meguro-ku .

Limnophila (Ephelia) subaprilina yezoensis Alexander, 1924: 72 .

Type locality: Japan, Hokkaido, Sapporo-shi, Jôzankei , syn. nov .

Limnophila (Elaeophila) subaprilina: Alexander (1953: 167) .

Eloeophila (s.str.) subaprilina yezoensis: Savchenko & Krivolutskaya (1976: 61) .

Eloeophila subaprilina: Nakamura (2014: 12) ; Podenas et al. (2020: 519); Oosterbroek (2021).

Eloeophila subaprilina yezoensis: Nakamura (2014: 12) .

Eloeophila yezoensis: Podenas et al. (2020: 523) ; Oosterbroek (2021).

Material examined. HOLOTYPES: male, JAPAN, Honshu, Tokio (Tokyo), Meguro , 20.IV.1919, R . Takahashi (E. s. subaprilina / USNM); female, JAPAN, Hokkaido, Ishikari-no-kuni, Jozankei , altitude 1000 feet, 16.VIII.1923, T . Esaki (E. s. yezoensis / USNM) ; PARATYPE: JAPAN: [Honshu] 1 male, same data as holotype of E. s. subaprilina except 27. V .1925 (E. s. subaprilina / USNM) . Non-type material: JAPAN: [Honshu] 1 male, Aomori, Hirosaki-shi, Koguriyama, Inekari-sawa River , 11.VIII.2013, D. Kato ( BLKU) ; 2 males, Aomori, Nishimeya-mura, Kawaratai, Ôkawa Path , 6.VIII.2013, D. Kato ( BLKU) ; 1 female, same data as previous except 1.IX.2013 ; 1 male, same data as previous except 27. VI.2014 ; 1 male, same data as previous except 12.VII.2014 ; 1 male, Aomori, Nakadomari-machi, Ôsawanai, Ôsawanai Pond , 19. VI.2014, D. Kato ( BLKU) ; 1 male, same data as previous except 21.VII.2014 ; 2 males 1 female, Aomori, Towada-shi, Okuse, Tsutanuma Path , 5.VII.2014, D. Kato ( BLKU) ; 1 female, Iwate, Hachimantai-shi, Matsukawa Spa , 3.VIII.2013, D. Kato ( BLKU) ; 1 male, Iwate, Hachimantai-shi, Hosono, Appi Highland , 3.VIII.2013, D. Kato ( BLKU) ; 1 male 1 female, Fukushima, Hinoemata-mura, Hiuchigatake, Alt. 1530 m, 16.VII.2019, D. Kato ( BLKU) ; 1 male, Echigo (Niigata), Kurokawa , 29. V.1954, K. Baba ( USNM) ; 2 males 1 female, Niigata, Tôkamachi-shi, Matsunoyama, Kyororo , Alt. 310 m, 19. V.2020, D. Kato ( BLKU) ; 1 male, Niigata, Tôkamachi-shi, Matsunoyama-Amamizukoshi, Mt. Amamizu-yama , Alt. 920 m, 3.VII.2019, D. Kato ( BLKU) ; 1 male, same data as previous except 2.VIII.2019 ; 1 male, same data as previous except 18.VIII.2019 ; 1 female, Nagano, Ueda-shi, Sugadairakôgen, Sugadaira Montane Research Center , 20.VIII.2013, D. Kato ( BLKU) ; 3 males, Nagano, Ômachi-shi, Tokiwa, Mamushitaira , Alt. 1000 m, 2.VIII.2020, D. Kato ( BLKU) ; 2 males 1 female, Nagano, Kawakami-mura, Hisawa, Yade-gawa River , Alt. 1300 m, 14.VIII.2016, D. Kato ( BLKU) ; 1 male, Nagano, Matsumoto-shi, Nagawa, Sakai-gawa River , near bus stop Nagawakôgen-Iriguchi , Alt. 1340 m, 22.VII.2016, D. Kato ( BLKU) ; 1 male 1 female, Nagano, Kiso-machi, Fukushima, Komanoyu Spa, Alt. 960 m, 21.VII.2016, D. Kato ( BLKU) ; 1 female, Aichi, Nagoya-shi, Chikusa-ku, Niza-chô , Nagoya Univ. , Higashiyama Campus , 15. VI.2016, T. Mishima ( BLKU) ; 1 male, Aichi, Seto-shi, Iwaya-chô, near Iwayadô Park , Alt. 300 m, 17.VII.2016, D. Kato ( BLKU) ; 1 female, Aichi, Shitara-chô, Tamine, Mt. Takanosu-yama , 17.VIII.2013, D. Kato ( BLKU) ; 1 male, Okayama, Kurashiki , 27. V.1925, C. Harukawa ( USNM) . [ Shikoku ] 1 male, Iyo (Ehime), Matsuyama, Iwazeki , 29.IV.1949, Yano ( USNM) ; 1 male, Iyo (Ehime), Omogo Valley , 800 m, 7.VIII.1953 ( USNM) ; 1 female, Tokushima, Miyoshi-shi, Higashiiya-Ochiai, Ochiai-tôge Pass , Alt. 1350 m, 10.VIII.2015, D. Kato ( BLKU) . [ Kyushu ] 1 male, Fukuoka, Fukuoka-shi, Sawara-ku, Itaya , Mt. Sefuri-san , 13. V.2015, D. Kato ( BLKU) ; 4 males 2 females, same data as previous except 4. VI.2015 ; 1 male, same data as previous except 10. VI.2015 ; 1 male, same data as previous except 3.VII.2015 ; 2 males, same data as previous except 10.VII.2015 ; 2 males, same data as previous except 24. VI.2015 ; 3 males 1 female, same data as previous except 30.VII.2015 ; 4 males 1 female, same data as previous except 14.VIII.2015 ; 1 male, Fukuoka, Miyako-machi, Saigawa-Hobashira, Notȏge Pass , Alt. 740 m, 14.VII.2016, D. Kato ( BLKU) ; 1 female, Ôita, Kokonoe-machi, Tano, Alt. 1050 m, 26. VI.2016, D. Kato ( BLKU) ; 1 female, Kagoshima, Kirishima-shi, Makizono-chô, Takachiho , near Maruo Spa , Alt. 700 m, 5. VI.2016, D. Kato ( BLKU) ; 1 male 2 females, Kagoshima, Minamiôsumi-chô, Satamagome, near Sata-misaki Cape , Alt. 90 m, 30. V.2018, D. Kato ( BLKU) . NORTH KOREA: 1 male, Seren Mts. , 2000 feet, 8.VIII.1938, Yankovsky (identified as E. s. yezoensis / USNM) .

Short description. General coloration grey and brown ( Fig. 10A ). Head. Grey to ocherous grey, often slightly bluish tinged; anterior part of vertex with dark marking. Antenna about three times as long as head. Scape and pedicel dusky yellow to dark brownish grey. Flagellum dusky yellow to brown; basal flagellomeres often paler.

Thorax. Grey to greyish ocherous. Notum and pleuron mottled with dark brown spots and stripes. Wing ( Fig. 10B ) tinged with dark brown, spotted with dark brown: seven markings at anterior margin; tips of most veins at wing margin and all crossveins each with dark spot or seam; large spot at subapical part of A 1. Legs mainly yellow; each femur sometimes with weakly dark apical or subapical band, at most three times as long as wide. Halter dusky yellow; knob dark brown.

Abdomen. Pregenital segments brown to dark brown, caudal margin of each segment darker. Male terminalia ( Figs 10C–G ) with outer gonostylus dorsoventrally flattened, bearing small tooth at tip; outer margin of outer gonostylus with subapical lobe; apical inner edge angled at about 100 degrees with rounded corner ( Fig. 10D ). Paramere with mesal-apical lobe flat finger-shaped, about three times as long as wide and lateral lobe ( Fig. 10G ). Aedeagus relatively stout, about four times as long as wide, directed posterodorsally on basal part, curved posteriorly at middle ( Fig. 10F ). Apodeme of vesica directed ventrally ( Fig. 10F ).

Measurements. Male (n = 42): body length: 3.3–6.6 mm; wing length: 4.4–7.5 mm. Female (n = 22): body length: 5.0– 8.6 mm; wing length: 5.1–8.8 mm.

Distribution. Japan (Honshu, Shikoku, and Kyushu), Kuril Islands (Kunashir Is) ( Fig. 13E ), Russia, North Korea, and South Korea.

Remarks. The subspecies of this species was distinguished from the nominotypical subspecies by colorations of antenna and femoral tip. Each of these characters varies even in specimens from the same locality. Based on no distinct morphological difference in the group, E. s. yezoensis is synonymized with the nominotypical subspecies. See remarks in E. persalsa for comparison to similar species.

Figures

FIGURE 10. Eloeophila subaprilina (Alexander, 1919). 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.

FIGURE 13. Distributions of Japanese species of Eloeophila. A. E. amamiana (red); E. apicisetula Kato, sp. nov. (blue); B. E. canidorsalis Kato, sp. nov. (red); E. dietziana (blue); C. E. enischnophallus Kato, sp. nov. (red); E. kintaro (blue); E. tergilobellus Kato, sp. nov. (green); D. E. hadrophallus Kato, sp. nov. (red); E. lilliputina (blue); E. persalsa (green); E. E. subaprilina (red); F. E. ussuriana iwatensis (red); E. verrucosa (blue).