Nipponomyia pentacantha Alexander, 1958
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|Nipponomyia pentacantha Alexander, 1958|
Nipponomyia pentacantha : Alexander, 1958: 293-294, plate 3, figs 14, 17 - original description, wing and male terminalia illustration; Ishida 1958: 39 - distribution; Nakamura 2014: 4 - distribution.
Holotype male: Japan, Nagano , Echigo , Mount Amakazari ; alt. 300-600 m; 25-26 Jun. 1955; Baba leg. Paratype male: same location; alt. 300 m; 26 Jun. 1955; Baba leg. Type specimens deposited in National Museum of Natural History, Smithsonian Institution, Washington, D.C., USA; not studied.
Non-types: Japan: [ Honshu ] • 2♂; Aomori , Nishimeya , Shirakami Nature observation garden, Kawaratai ; alt. 255 m; 40°31.13'N, 140°12.89'E; 4 Jul. 2013; leg. D. Kato (pinned, BLKU) GoogleMaps • 1♀ ( GenBank # MT874514); same data as previous except 6 Jul. 2013; D. Kato leg. (pinned, BLKU) • 1♂; Aomori, Nishimeya , Okawa Path , Kawaratai ; alt. 300 m; 40°30.04'N, 140°12.24'E; 15 Jul. 2013; D. Kato leg. (pinned, BLKU) GoogleMaps • 1♀; Aomori , Hirosaki , Inekari River , Koguriyama ; alt. 170 m; 40°32.19'N, 140°29.22'E; 25 Jul. 2013; D. Kato leg. (pinned, BLKU) GoogleMaps • 1♂; Aomori , Towada , Tsutanuma Path , Okuse ; alt. 468 m; 40°35.45'N, 140°57.42'E; 21 Jun. 2014; D. Kato leg. (pinned, BLKU) GoogleMaps • 3♂; Fukushima, Hinoemata , Hiuchigatake ; alt. 1530 m; 36°59.4'N, 139°16.82'E; 16 Jul. 2019; D. Kato leg. (pinned, BLKU) GoogleMaps • 1♂; Niigata, Tokamachi , Matsunoyama-Amamizukoshi , Mt Amamizu ; alt. 920 m; 37°1.47'N, 138°33.77'E; 3 Jul. 2019; D. Kato leg. (pinned, BLKU) GoogleMaps • 4♂, 1♀; Niigata, Tokamachi , Matsunoyama , Kyororo ; alt. 310 m; 37°5.97'N, 138°36.98'E; 21 Jul. 2019; D. Kato leg. (pinned, BLKU). GoogleMaps
Yellowish species with 11 dark spots on thorax (7 dark spots in N. okinawensis Kolcsár & Kato, sp. nov., 11-13 dark spots in N. kuwanai ). Wing with transverse dark lines in costal cell. Brown marking extending from R2+3 to crossvein m-m (brown marking extending from R2+3 to maximum to base of M1 in N. kuwanai and N. okinawensis Kolcsár & Kato, sp. nov.). Sternite 2 without black marking at corner of membranous area (with black marking at corner of membranous area in N. kuwanai ), a diffuse line positioned same level as line on sternite 3 ( N. kuwanai without this line, N. okinawensis Kolcsár & Kato, sp. nov. with any line and dark marking on sternite 2). Gonostylus with 4 or 5 spines (11-14 spines in N. kuwanai ). Aedeagus short, twice as long as wide, rounded (as long as wide in N. kuwanai ). Cercus curved upward (straight in N. okinawensis Kolcsár & Kato, sp. nov.). Female genital opening Y-shaped (T-shaped in N. okinawensis Kolcsár & Kato, sp. nov.), lateral sclerite 1/3 of length of genital fork (less than 1/5 of length of genital fork in N. kuwanai and less than 1/6-1/7 of length of genital fork in N. okinawensis Kolcsár & Kato, sp. nov.), genital fork cross-shaped (spoon-shaped in N. kuwanai , cross-shaped in N. okinawensis Kolcsár & Kato, sp. nov. but lateral branch curved caudally).
Body length: male 9.5-11 mm, female: 12-13 mm.
Wing length: male 9.5-10.5 mm, female 10-11 mm.
Head: Light brown to brown (Fig. 8C View Figure 8 ). Palpi brown, 5-segmented, palpomeres 2 to 4 subequal in length, last segment elongated, ca. 1.5 × longer than palpomere 4 in male. Female palpomere 5 almost same length as palpomere 4 or at most 1.3 × longer. Tip of palpomere 5 darker than other part of palpus. Antenna short, just a little longer than head. Scape cylindrical, wider than pedicel, twice as long as pedicel. Flagellum 13-segmented, flagellomeres gradually narrowing apically. Antenna yellow to light brown, scape always darker than pedicel and flagellomeres (Fig. 8C View Figure 8 ).
Thorax: In dry specimens general coloration yellow (Fig. 8C View Figure 8 ) to fulvous (Fig. 8A, B View Figure 8 ); 4 dark spots on presutural area of scutum and 7 spots on postsutural area, sizes of spots variable, especially lateral pair of spots on presutural area (Fig. 8B, C View Figure 8 ).
Legs: General coloration yellow, covered with yellowish setae (Fig. 8A View Figure 8 ). Femora without apical darkened area, apical part of tibiae brownish, with darker setae. Tarsomeres 1-3 each with narrow brown ring at tip. Tarsomeres 4 and 5 brown. Spurs on tarsomeres (2 in each segment), small but relatively easy to recognize for their darker coloration than setae.
Wing: As in Fig. 4D View Figure 4 . Wing with transverse dark lines in costal cell. Crossvein m-m present. Dark band from base of R2+3 extending to crossvein m-m. Dark band along crossveins r-m and m-cu pale.
Abdomen: Abdomen covered with comparatively long pale setae. Tergites 2-6 in both sexes, each with longitudinal narrow black line on lateral side, situated on basal 1/3-1/2 of each tergite in male (Fig. 8A, B View Figure 8 ) and 1/2-2/3 of each tergite in females. Sternite 2 with short black line positioned on lateral side in the middle between membranous area and posterior end of sternite 2. Sternites 3-6 with a little, wider than line on tergite (Fig. 8A, B View Figure 8 ). Sometimes line on sternite 6 indistinct or absent. Tergites and sternites 7 and 8 slightly darker than previous segments, dark yellow to brown.
Male terminalia: dark yellow to brown, always darkest part of abdomen (Fig. 8A View Figure 8 ). Tergite 9 almost straight at posterior margin (Fig. 5A, B View Figure 5 ). Gonocoxite without apical lobe 1.7-1.8 × longer than wide and 1.5-1.6 × longer than tergite 9 in lateral view (Fig. 5E, F View Figure 5 ). Apical lobe of gonocoxite not separated from gonocoxite, as long as 3/4 of width of gonocoxite, in lateral view (Fig. 5G, H View Figure 5 ). Posterior part of gonostylus wide, bearing 4 or 5 strong black spines (Fig. 5A, B, G, H View Figure 5 ). Interbase dilated apically, with two pointed parts; interbase with apical part 2.5-3 × as wide as basal part, in dorsal view (Fig. 5A-D View Figure 5 ). Shape of interbase in inner lateral view highly variable based on angle, directing postero-dorsally pointed at tip (Fig. 5G, H View Figure 5 ). Aedeagus short, twice as long as wide, tip rounded (Fig. 5I, J View Figure 5 ).
Female terminalia, ovipositor: General coloration dark yellow. Cercus curved upward (Fig. 6B View Figure 6 ). Genital fork cross-shaped, wider in 3/4 of its length (Figs 6D View Figure 6 , 7B View Figure 7 ). Lateral sclerite of genital plate small and narrow, 1/3 of length of genital fork (Fig. 7B View Figure 7 ). Genital opening Y-shaped, sclerotized area before genital fork relatively large, approximately as long as lateral sclerite (Fig. 7B View Figure 7 ).
Japan: Honshu Island ( Oosterbroek 2020, Nakamura 2014) (Fig. 9 View Figure 9 ).
Middle of June to middle of September.
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