Eloeophila amamiana (Alexander, 1956)

Kato, Daichi, 2021, Taxonomic study of the genus Eloeophila Rondani, 1856 of Japan (Limoniidae Diptera), Zootaxa 4995 (3), pp. 425-451 : 426-428

Eloeophila amamiana (Alexander, 1956)

( Figs 1A–H , 13A )

Limnophila (Elaeophila) amamiana Alexander, 1956a: 671 .

Type locality: Japan, Nansei Islands, Kagoshima, Amami Is, Amami-shi , Shinmura .

Eloeophila amamiana: Nakamura (2014: 12) ; Oosterbroek (2021).

Material examined. HOLOTYPE male, JAPAN, Nansei Islands , Amami Oshima (Amami Is), Shinmura, 24.III.1954, T. Mohri ( USNM) . Non-type material: JAPAN: [Nansei Islands] Amami Is: 1 male, Setouchi-chô, Shinokawa, Yakugachi-gawa River , Alt. 130 m, 3.IV.2019 , D. Kato ( BLKU); 1 male, Setouchi-chô, Agina, Agina-gawa River , Alt. 110 m, 3.IV.2019 , D. Kato ( BLKU); Tokunoshima Is: 1 male, Tokunoshima-chȏ, Todoroki , near Mt. Sasontsuji-dake , Alt. 200 m, 2.IV.2019 , D. Kato ( BLKU); Okinawa Is: 3 males, Nago-shi, Genka , Mt. Ubashi-yama , Alt. 100 m, 12.III.2016 , D. Kato ( BLKU); 2 males 1 female, same data as previous except Alt. 50 m, 25.I.2018 , D. Kato ( BLKU); 7 males, Kunigami-son, Yona, Mt. Fuenchiji-dake , Alt. 300 m, 12.III.2016 , D. Kato ( BLKU); 5 males 1 female, same data as previous except 21. V.2016.

Short description. General coloration brown to dark brown ( Fig. 1A ). Head. Dark greyish brown. Antenna about four times as long as head.

Thorax. Weakly pale between scutal lobes and on postpronotum and metapleura. Prescutum sometimes with four indistinctly dark stripes. Wing ( Fig. 1B ) tinged with dark brown, indistinctly patterned: origin and fork of Rs, crossvein Sc-r, and stigma vaguely dark. Legs mainly dusky yellow, without dark femoral band. Halter yellowish at base of stem.

Abdomen. Sternites yellowish. Male terminalia ( Figs 1C–G ) with outer gonostylus dorsoventrally flattened, bearing small apical spine and subapical lobe on outer margin; apical inner edge angulated at right angle with round- ed corner ( Fig. 1D ). Paramere with mesal-apical lobe flat finger-shaped, about 1.5 times as long as lateral lobe ( Fig. 1G ). Aedeagus about five times as long as wide in lateral view, curved posteriorly near base; tip ending proximal to tip of mesal-apical lobe ( Figs 1E–F ). Apodeme of vesica directed anteroventrally ( Fig. 1F ).

Measurements. Male (n = 22): body length: 4.1–5.5 mm; wing length: 4.8–6.2 mm. Female (n = 2): body length: 6.0– 7.2 mm; wing length: 5.5–6.6 mm.

Distribution. Japan (Nansei islands: Amami, Tokunoshima, and Okinawa islands) ( Fig. 13A ).

Remarks. This species is somewhat similar to E. verrucosa in terms of general appearance but is distinguished from it by the following characters: male tergite 8 straight at caudal margins (bearing rectangular lobe at middle of caudal margins in E. verrucosa ).

Figures

FIGURE 1. Eloeophila amamiana (Alexander, 1956). 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; H. female terminalia, lateral view. Scale bars: A–B, 2 mm; C–H, 0.1 mm. Abbreviations: ad, aedeagus; av, apodeme of vesica; cr, cercus; hv, hypogynial valve; ig, inner gonostylus; lp, lateral apodeme; ls, lower shelf; outer gonostylus; pm, paramere; s m-cu, supernumerary m-cu; sX, sternite X; tX, tergite X; vs, vesica.

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).