Ormosia (Parormosia) diversipes Alexander, 1919

Kato, Daichi, Watanabe, Kozo & Kolcsar, Levente-Peter, 2022, Japanese species of Ormosia Rondani (Diptera, Limoniidae): revision of the subgenera Oreophila Lackschewitz and Parormosia Alexander, ZooKeys 1132, pp. 127-162 : 127

Ormosia (Parormosia) diversipes Alexander, 1919

Figs 5C , 12 , 13 , 14 , 15

Ormosia diversipes in Alexander 1919: 334: original description (type locality: Japan, Honshu, Saitama, Chichibu); Alexander 1930: 508: faunistic record; Alexander 1936a: 193: comparison.

Ormosia atripes in Alexander 1919: 335: original description (type locality: Japan, Honshu, Tokyo, Meguro); Alexander 1936a: 193: suggestion of synonymy; Alexander 1965: 35: synonymy.

Ormosia (Ormosia) atripes in Alexander 1953b: 173: faunistic record; Alexander 1954: 31: faunistic record, distribution.

Ormosia (Parormosia) diversipes in Alexander 1965: 35: new subgeneric combination; Savchenko and Krivolutskaya 1976: 94: faunistic record; Savchenko 1979: 27: faunistic record; Savchenko 1983: 83: faunistic records; Pilipenko and Sidorenko 2006: distribution; Pilipenko 2009: 333: faunistic record; Nakamura 2014: 33: distribution; Oosterbroek 2022: distribution.

Type material examined.

Ormosia atripes Alexander, 1919: Paratype. Japan • 1 ♀; Honshu; Tokio (Tokyo), Meguro; 9 Apr. 1919; R. Takahashi leg.; USNM.

Ormosia diversipes Alexander, 1919: Paratype. Japan • 1 ♂; Honshu; Tokio (Tokyo), Meguro; 26 Mar. 1919; R. Takahashi leg.; USNM.

Non-type material examined.

Ormosia (Parormosia) diversipes Alexander, 1919: Japan • 1 ♂; Honshu, Aomori, Fukaura-machi, Okazaki, Fukaura House; 40.63684°N, 139.9116°E; alt. 130 m; 26 Aug. 2014; light trap; D. Kato leg.; BLKU. • 1 ♂; Honshu, Aomori, Fukaura-machi, Mt. Takaniô-yama; alt. 140 m; 11 May 2014; D. Kato leg.; BLKU. • 1 ♂; Honshu, Aomori, Hirosaki-shi, Koguriyama, Inekari-sawa River; 40.53658°N, 140.48701°E; alt. 170 m; 10 May 2013; • 1 ♂; same locality; 17 May 2013; D. Kato leg.; BLKU. • 1 ♂; Honshu, Aomori, Hirosaki-shi, Ichinowatari-Washinosu; 40.51923°N, 140.43889°E; alt. 205 m; 9 May 2013; • 1 ♂; same locality; 12 May 2013; • 1 ♂; same locality; 21 May 2013; • 1 ♂; same locality; 5 Sep. 2013; D. Kato leg.; BLKU. • 1 ♀; Honshu, Aomori, Nakadomari-machi, Ôsawanai, Ôsawanai-tameike Pond; 40.9464°N, 140.4623°E; alt. 35 m; 15 May 2014; • 1 ♂; same locality; 24 May 2014; D. Kato leg.; BLKU. • 1 ♂, 1 ♀; Honshu, Aomori, Nishimeya-mura, Kawaratai, Ôkawa-rindô Path; 40.50062°N, 140.20405°E; alt. 300 m; 18 Sep. 2013; • 1 ♂; same locality; 13 May 2014; D. Kato leg.; BLKU. • 1 ♀; Honshu, Aomori, Nishimeya-mura, Kawaratai, The Shirakami Natural Science Park, Hirosaki Univ.; 40.5188°N, 140.21488°E; alt. 255 m; 18 May 2014; • 2 ♂; same locality; 25 May 2014; • 2 ♂; same locality; 1 Jun. 2014; • 1 ♂; same locality; 28 Sep. 2014; light trap; D. Kato leg.; BLKU. • 2 ♂, 4 ♀; Honshu, Aomori, Towada-shi, Okuse, Tsutanuma-rindô Path; 40.59084°N, 140.95705°E; alt. 460 m; 14 May 2014; D. Kato leg.; BLKU. • 1 ♂; Honshu, Niigata, Tôkamachi-shi, Matsunoyama-Amamizukoshi, Mt. Amamizu-yama; alt. 920 m; 1 Oct. 2019; D. Kato leg.; BLKU. • 2 ♂; Honshu, Niigata, Tôkamachi-shi, Matsunoyama, Echigo-Matsunoyama Museum of Natural Science ‘Kyororo’; 37.09956°N, 138.61631°E; alt. 310 m; 25 Apr. 2020; • 1 ♀; same locality; 5 May 2020; D. Kato leg.; BLKU. • 1 ♂; Honshu, Niigata, Tôkamachi-shi, Matsunoyama-Mizunashi, Step-in-plan; alt. 230 m; 2 Oct. 2020; D. Kato leg.; BLKU. • 1 ♂; Honshu, Nagano, Sakae-mura, Sakai, Koakazawa-gawa River; 36.85352°N, 138.66358°E; alt. 1320-1400 m; 21 Aug. 2020; D. Kato leg.; BLKU. • 1 ♂; Honshu, Gifu; 15 Nov. 1931; S. Kariya leg.; USNM. • 1 ♂; Honshu, Hida, Ontake; 26 Jul. 1959; Mishima leg.; USNM. • 1 ♀; Honshu, Ibaraki, Tsukuba-shi, Oda, Mt. Hôkyô-san; 36.15802°N, 140.12142°E; alt. 50 m; 14 Oct. 2011; • 1 ♂; same locality; 26 Mar. 2013; D. Kato leg.; BLKU. • 1 ♂; Honshu, Ôsaka, Izumisano-shi, Ôgi, Inunakisan Spa; 34.3398°N, 135.38375°E; alt. 250 m; 16 Apr. 2014; D. Kato leg.; BLKU. • 2 ♂; Honshu, Okayama, Okayama, Maniwa-shi, Hiruzen-Shimotokuyama; 35.3293°N, 133.59725°E; alt. 780 m; 17 May 2015; D. Kato leg.; BLKU. • 3 ♀; Shikoku, Kagawa, Mannȏ-chȏ, Katsuura, Myȏjin-gawa River; 34.09402°N, 134.0143°E; alt. 480 m; 21 Apr. 2014; D. Kato leg.; BLKU. • 1 ♂; Shikoku, Ehime, Kumakogen, Kuma River, dam; 33.68392°N, 132.87145°E; alt. 615 m; 10 Oct. 2021; L.-P. Kolcsár leg.; CKLP. • 2 ♂, 1 ♀; Shikoku, Ehime, Kumakogen, Omogo River; 33.56118°N, 133.00669°E; alt. 290 m; 13 Oct. 2021; light trap; L.-P. Kolcsár leg.; CKLP. • 1 ♂; Shikoku, Ehime, Kumakogen, Myogadani River; 33.54869°N, 132.94807°E; alt. 890 m; 17 Jun. 2019; L.-P. Kolcsár leg.; CKLP. • 1 ♂; Shikoku, Ehime, Kumakogen, small stream and concrete wall; 33.59423°N, 132.98385°E; alt. 640 m; 19 May 2019; L.-P. Kolcsár leg.; CKLP. • 1 ♂; Shikoku, Ehime, Matsuyama, bamboo forest and small stream; 33.86363°N, 132.76673°E; alt. 110 m; 24 Mar. 2021; L.-P. Kolcsár leg.; CKLP. • 1 ♂; Shikoku, Ehime, Matsuyama, fill up lake; 33.83858°N, 132.81399°E; alt. 100 m; 27 Apr-. 2019; L.-P. Kolcsár leg.; CKLP. • 1 ♂, 1 ♀; Shikoku, Ehime, Matsuyama, stream; 33.86152°N, 132.82591°E; alt. 180 m; 5 Apr. 2019; L.-P. Kolcsár leg.; CKLP. • 1 ♂; Shikoku, Ehime, Matsuyama, rocky stream and waterfall; 33.86801°N, 132.83482°E; alt. 240 m; 3 May 2019; L.-P. Kolcsár leg.; CKLP. • 1 ♂; Shikoku, Ehime, Matsuyama, small ruderal stream; 33.863284°N, 132.771579°E; alt. 125 m; 10 Apr. 2020; • 7 ♂, 1 ♀; Shikoku, Ehime, Matsuyama, Takimoto, small lake; 33.96114°N, 132.82899°E; alt. 205 m; 10 Oct. 2021; light trap; L.-P. Kolcsár leg.; CKLP. • 8 ♂, 4 ♀; Shikoku, Ehime, Matsuyama, Tateiwa dam; 33.97129°N, 132.87542°E; alt. 310 m; 10 Oct. 2021; light trap; L.-P. Kolcsár leg.; CKLP. • 1 ♂; Shikoku, Ehime, Matsuyama, small waterfall in Japanese cedar forest; 33.85911°N, 132.83472°E; alt. 330 m; 17 May 2020; L.-P. Kolcsár leg.; CKLP. • 1 ♂; Shikoku, Ehime, Seiyo, Shirokawachō Noigawa; 33.44036°N, 132.81202°E; alt. 600 m; 11 May 2021; L.-P. Kolcsár leg.; CKLP. • 5 ♂ (1 ♂: BOLD ID: JPCOI003-22), 2 ♀ (1♀: BOLD ID: JPCOI004-22); Shikoku, Ehime, Toon, Kamihayashi Forest Park; 33.72146°N, 132.89012°E; alt. 1100 m; light trap; 3 Oct. 2021. • 2 ♀; Shikoku, Tokushima, Higashimiyoshi-chô, Higashiyama, Ogawadani-gawa River; alt. 340 m; 21 Apr. 2014; D. Kato leg.; BLKU. • 1 ♀; Shikoku, Tokushima, Miyoshi-shi, Higashiiya-Ochiai, near Matsuogawa Dam; 33.96478°N, 133.93908°E; alt. 900 m; 15 May 2015; • 1 ♂; same locality; 30 Apr. 2016; D. Kato leg.; BLKU. • 1 ♂; Shikoku, Tokushima, Miyoshi, Higashiiya, Mt. Tsurugi area; 33.86651°N, 134.08549°E; alt. 1315 m; light trap; 16 Oct. 2021; K. Kuroda leg.; CKLP. • 1 ♂; Kyushu, Fukuoka, Fukuoka-shi, Jônan-ku, Katae, Mt. Abura-yama; 33.53046°N, 130.36594°E; alt. 220 m; 19 Apr. 2014; • 1 ♂, 1 ♀; same locality; 20 Oct. 2015; D. Kato leg.; BLKU. • 2 ♂; Kyushu, Fukuoka, Fukuoka-shi, Sawara-ku, Itaya, Mt. Sefuri-san; 33.43811°N, 130.36673°E; alt. 970 m; 23 May 2015; • 1 ♂, 2 ♀; same locality; 10 Jun. 2015; • 2 ♂; same locality; 4 Oct. 2015; D. Kato leg.; BLKU. • 1 ♀; Kyushu, Fukuoka, Itoshima-shi, Shimasakurai, Ôguchi seaside; 33.63249°N, 130.18094°E; alt. 5 m; 23 Oct. 2015; D. Kato leg.; BLKU. • 2 ♀; Kyushu, Fukuoka, Miyawaka-shi, Inunaki, Mt. Inunaki-san; 33.68112°N, 130.55317°E; alt. 300 m; 5 May 2015; D. Kato leg.; BLKU. • 1 ♀; Kyushu, Kumamoto, Yatsushiro-shi, Izumi-machi-Hagi, Momiki-gawa River; 32.51417°N, 130.93927°E; alt. 580 m; 11 May 2016; D. Kato leg.; BLKU. • 1 ♂; Kyushu, Kumamoto, Yatsushiro-shi, Izumi-machi-Momiki; alt. 1060 m; 22 Sep. 2015; • 1 ♂; same locality; alt. 1400 m; 17 Oct. 2015; D. Kato leg.; BLKU. • 1 ♀; Kyushu, Miyazaki, Gokase-chô, Kuraoka, Gokase ski area; alt. 1500 m; 28 Jun. 2015; D. Kato leg.; BLKU. • 1 ♂; Kyushu, Mt. Kirishima; alt. 2500 ft.; 3 May 1929; S. Issiki leg.; USNM. • 1 ♂; Kyushu, Saga, Karatsu-shi, Hamatama-machi-Torisu, Tsubakiyama-tameike Pond; 33.40414°N, 130.10641°E; alt. 630 m; 26 Apr. 2015; D. Kato leg.; BLKU. • 1 ♂; Kyushu, Saga, Saga-shi, Fuji-machi-Seiya, Kase-gawa River near Hokuzan Dam; 33.43322°N, 130.23212°E; alt. 320 m; 23 Apr. 2015; D. Kato leg.; BLKU. • 1 ♀; Kyushu, Kagoshima, Yakushima I, Mugio, close to Yakusugi Land; 30.30173°N, 130.58574°E; alt. 1100 m; 19 Oct. 2021; L.-P. Kolcsár leg.; CKLP. • 1 ♂; Kyushu, Kagoshima, Yakushima I, Nagata, Nagata River; 30.38757°N, 130.43528°E; alt. 40 m; 20 Oct. 2021; L.-P. Kolcsár leg.; CKLP.

Diagnosis.

General coloration brown to dark brown (Fig. 12 ). Vertex greyish. Antenna yellowish on pedicel and at least basal segments of flagellum. Mesonotum sometimes barely greyish. Wing brownish tinged, stigmal region weakly dark. Cell dm usually closed. Halter dusky yellow. Legs dark brown in female (Fig. 12B ), tibiae to tarsi mostly yellow in male (Fig. 12A ). Male terminalia: tergite 9 bearing pair of long membranous lobes at caudal margin. Clasper of gonostylus divided into two arms near base, ventral arm blade-shaped, gradually narrow toward tip, ~ 2 × as long as curved stout dorsal arm. Lobe of gonostylus narrower and slightly shorter than clasper, weakly dilated at apical 1/4, with long setae on ventral margin near tip. Interbase with mesal-apical lobe bearing two claws. Female terminalia with cercus slender, upcurved distally. Lateral arm of genital fork pointed and curved posteriorly. Sternite 9 rounded posteriorly, desclerotized medially.

Redescription.

Male. Body length 3.2-4.5 mm, wing length 3.9-5.5 mm.

Head: covered with black setae. Vertex grey to dark grey. Eyes relatively large and widely separated, ~ 4/5 as wide as narrowest point of vertex, ~ 1/2 length of head including rostrum in dorsal view. Rostrum dark brown, ~ 1/2 length of eye in lateral view. Palpus dark brown, 5-segmented, slightly shorter than head, palpomere 1 globular and small, palpomeres 2-5 cylindrical, slenderer in palpomeres 2 and 5. Labellum dark brown. Antenna 16-segmented, 2.5-3 × as long as head (Fig. 12A ); scape dark brown, 1.5 × as long as wide; pedicel dusky yellow, roughly globular, 3/4 length of scape; flagellomeres dusky yellow, sometimes darker on distal segments, oval in flagellomere 1 and slender oval on succeeding segments; each flagellomere with one or two verticils, longest one ~ 2 × as long as each segment, gradually shorter toward distal segment, sensilla abundant, at most as long as each flagellomere.

Thorax: covered with yellow setae, rarely brownish. Pronotum brown to dark brown, often yellowish on lateral side of postpronotum. Mesonotum brown to dark greyish brown, sometimes lighter brown around prescutal pit. Prescutal pit brown to black, oval to long bacilliform, often widened toward outer end. Tuberculate pit distinct, situated at anterior 2/5 between anterior margin of mesonotum and prescutal pit. Pleuron subnitidous, dark brown. Wing (Fig. 13 ) relatively wide, 3.1-3.2 × as long as wide; tinged with brown, sometimes weakly yellowish on prearcular region, stigmal region weakly dark; Sc ending at level of R2 or slightly distal to it; crossvein sc-r distinct, situated between levels of basal 1/3-1/2 of Rs; R2+3+4 1/7-1/3 length of R3; R2 situated between fork of R2+3+4 and length of itself distal to it; M4 1-2 × as long as M3+4; cell dm closed, 0.4-0.7 × as long as cell m1+2, or sometimes open by atrophy of crossvein m-m; wing margin between tips of CuP and A1 2.5-3 × as long as that between tips of CuP and CuA; A1 curved posteriorly near middle. Halter dusky yellow, ~ 3/5 length of thorax (Fig. 12A ). Legs with coxae to femora dark brown, femora very narrowly pale at bases; tibiae to tarsi yellow to dusky yellow, tips of tibiae and distal segments of tarsi weakly dark (Fig. 12A ).

Abdomen: dark brown, densely covered with yellow setae.

Male terminalia (Fig. 14 ): Tergite 9 with pair of long and flat, largely membranous lobes at caudal margin, ~ 1/3 length of remainder of tergite 9; tergite 9 slightly longer than wide including caudal lobe (Fig. 14A ). Sternite 9 slightly and widely convex at posterior margin (Fig. 14B ). Gonocoxite roundish, slightly shorter than tergite 9, posteroventral margin not produced beyond base of clasper of gonostylus. Gonocoxal apodeme long, connected to each other, forming bridge, central part jointed with anteromedial part of interbase (Fig. 14D ). Clasper of gonostylus dark, slightly longer than gonocoxite, divided into two arms; dorsal arm short, stout and curved ventrally, rounded at tip, distal 1/2 densely covered with black microscopic setae; ventral arm ~ 2 × as long as dorsal arm, blade-shaped, weakly twisted, gradually narrow toward tip, acute at tip (Fig. 14C ). Lobe of gonostylus slender, narrower, and slightly shorter than clasper, weakly dilated at apical 1/4, with several long setae on ventral margin near tip, obtuse at tip (Fig. 14C ). Interbase with mesal-apical lobe claw-shaped, curved and directed posterodorsally, bearing smaller spine at middle of outer margin (Fig. 14D, E ); basal part of each interbase fused and dorsolateral part roundly produced in lateral view (Fig. 14E ). Paramere wide, shorter than interbase (Fig. 14E ). Aedeagus slender and cylindrical, extreme tip slightly widened, extending beyond tip of interbase (Fig. 14D, E ). Aedeagal sheath covering aedeagus except apical part, posterior end ~ 4 × as wide as aedeagus at this point (Fig. 14D ), strongly produced ventrally (Fig. 14E ). Sperm pump roundish in dorsal view, anterior end situated at level of middle of paramere (Fig. 14D ). Ejaculatory apodeme developed, dorsoventrally compressed, fan-like plate, ~ 1/2 length of diameter of sperm pump (Fig. 14D, E ).

Female. Body length 3.6-5.0 mm, wing length 4.2-5.9 mm. Generally resembling male (Fig. 12B ), except antenna shorter, ~ 2 × as long as head; flagellomeres often dark brown entirely, with ca. eight verticils on each of basal segments, fewer on each of distal segments, longest one at most 1.5 × as long as each segment. Tibiae to tarsi dark brown, concolorous with femora (Fig. 12B ).

Female terminalia (Fig. 15 ): dark brown, cercus turning to amber-color toward tip. Tergites 8 and 9 fused. Cercus slender, upcurved distally, 1.3 × longer than tergite 10; hypogynial valve slender, 1.5 × as long as sternite 8, gradually narrowed toward tip, basal part ca. as wide as that of cercus, tip ending at level of basal 2/3 of cercus (Fig. 15A ). Genital frame with genital fork widened posteriorly, anterior part slender; lateral arm of genital fork pointed at tip and curved posteriorly, situated at posterior end of genital fork; sternite 9 rounded posteriorly, middle part desclerotized; three membranous areas present at level of genital opening (Fig. 15B ). Three spermathecal ducts present, basal parts blackened (Fig. 15B ). Spermathecae indistinct.

Distribution.

Japan (Honshu, Shikoku, Kyushu) (Fig. 5C ), Russia (FE), and Kuril Islands.

Remarks.

This species resembles a Chinese species, Ormosia (Parormosia) nigripennis Alexander, 1936 ( Alexander 1936a), but this species has two-spined mesal-apical lobe of the interbase (Fig. 14D, E ), while the latter species has a single pointed lobe on the interbase.

Figures

Figure 5. Distribution map of Japanese species of Ormosia (Oreophila) and Ormosia (Parormosia). A Ormosia (Oreophila) confluenta Alexander, 1922 (red), Ormosia (Oreophila) komazawai Kato & Kolcsar, sp. nov. (blue) B Ormosia (Oreophila) sootryeni Lackschewitz, 1935 C Ormosia (Parormosia) diversipes Alexander, 1919 D Ormosia (Parormosia) nippoalpina Alexander, 1941 (red), Ormosia (Parormosia) phalara Kato & Kolcsar, sp. nov. (blue).

Figure 12. Habitus of Ormosia (Parormosia) diversipes Alexander, 1919. A male B female. Scale bar: 2 mm.

Figure 13. Wing of Ormosia (Parormosia) diversipes Alexander, 1919. Scale bar: 2 mm.

Figure 14. Male terminalia of Ormosia (Parormosia) diversipes Alexander, 1919 A dorsal view B sternite 9, ventral view C gonostylus, outer surface D aedeagal complex, dorsal view (tip of gonocoxal apodeme moved posteriorly and left gonocoxal apodeme omitted) E aedeagal complex, lateral view (left = dorsal). Scale bars: 0.1 mm.

Figure 15. Female terminalia of Ormosia (Parormosia) diversipes Alexander, 1919 A lateral view B genital frame, ventral view (left = anterior). Scale bars: 0.1 mm.