Hydroptila botosaneanui Kumanski, 1990

Ito, Tomiko, Ohkawa, Ayuko & Hattori, Toshio, 2011, The genus Hydroptila Dalman (Trichoptera, Hydroptilidae) in Japan, Zootaxa 2801, pp. 1-26 : 20-22

Hydroptila botosaneanui Kumanski, 1990

( Figs. 12 , 14 F)

Hydroptila botosaneanui Kumanski, 1990 , 48–49, figs 51–55, male, female, Korea; Arefina et al., 2002, 97, Russian Far East (continental parts).

Adult. Wings dark brown with several indistinct small lighter markings. Antennae brown to light brown with indistinct darker markings towards apices.

Male. Lengths of forewing, hindwing and body 2.6–2.9 mm, 2.3–2.4 mm and 2.5–2.7 mm, respectively (n=5). Antennae 29–32-segmented; length 1.3–1.4 mm (n=5). Ventral process of sternite VII long with broad serrated apex. Segment IX with apico-lateral apodemes elongate and lateral lobes setose; apico-lateral apodemes extended to segment VII; setal lobes forming short humps in many specimens but produced in some specimens. Dorsal plate semi-membranous, transparent, triangular in lateral view, shovel-shaped in dorsal view; apex variable in shape even within specimens collected from same site, with or without shallow median concavity. Subgenital plate membranous, rounded in ventral and lateral views. Phallic apparatus slender, elongate with 3 small flanges; subapical process almost straight and adpressed to phallic apparatus, twisted apically. Inferior appendages short, fused basally and distally forming 2 short lobes; in lateral view, dorsal lobe digitate with very long seta subapically, ventral lobe larger and darker than dorsal lobe, curved ventrad, apically acute.

Female. Lengths of forewing, hindwing and body 2.5–2.8 mm, 2.0– 2.4 mm and 2.6–3.3 mm, respectively (n=5). Antennae 24–25-segmented; length 0.9–1.0 mm (n=5). Segment VIII tergite weakly sclerotized with deep excision posteriorly; sternite indistinct with narrow transverse bands near apical margin; pair of small rounded lobes ventrally, each lobe with 2–3 (3 in most specimens) strong, somewhat wavy, setae. Bursa copulatrix lozengeshaped.

Specimens examined. Hokkaido: 2 males, 47 females, 3 larvae, Kushiro-shi, Akan-cho, Akan-panke-to, 30.VI–21.IX.1996, TI & AO, L, S & R; 2 males, 17 females, ibid., 14.VII–13.VIII.1997, TI & AO, L & S; 51 males, 88 females, 132 pupae, 15 prepupae, 11 larvae, ibid., 10.VII–22.VIII.1998, TI & AO, L & R; 1 male, 29 females, ibid., 26.VII–14.IX.1999, TI & AO, L; 2 females, ibid., 8.VIII.2007, TI, S; 1 male, 3 females, ibid., 1.X.2010, TI, S; 1 female, Kushiro-shi, Akan-cho, Ibeshibetsu-gawa, 425 m, 27.VII.1999, TI & AO, L; 12 females, Kushiro-shi, Akan-cho, Akan-kohan, Ibeshibetsu, 31.VIII–21.IX.1996, TI & AO, L; 1 male, ibid., 14.VII.1997, TI & AO, L; 3 males, 23 females, Kushiro-shi, Akan-cho, Akan-kohan, Churui, 14.IX.1999, TI, L; 6 males, 224 females, Eniwa-shi, Kashiwagi-gawa, Fukajo-bashi, 21.VI–12.IX.2000, TI & AO, L; 3 males, 67 females, ibid., 25–30.VI.2001, TI, L; 1 female, Eniwa-shi, Moizari-gawa, Onsui-tameike, 6.VI.2000, TI & AO, L; 1 female, Eniwa-shi, Moizari-gawa, Saiwai-bashi, 20.VII.2010, TI, L; 2 males, 2 females, Eniwa-shi, Rarumanai-gawa, Hakusen-no-taki, 19.VI.2000, TI & AO, L; 10 males, 8 females, ibid., 15–21.VII.2001, TI, L; 1 female, Eniwa-shi, Izari-gawa, Suisei-bashi, 17.VIII.2001, TI, L; 3 females, ibid., 2.VII.2002, TI, L; 2 males, 4 females, Eniwa-shi, Ichankoppe-zawa, 220 m, 19.VII.2010, TI, L; 1 female, Chitose-shi, Monbetsu-gawa, 240 m, 14.VII.2000, TI et al., L. Honshu. Miyagi: 1 female, Kawasaki-machi, Taro-gawa, 200 m, 22.VI.1997, TH, L. Yamagata: 3 males, 4 females, Kaneyama-machi, Kanayama-gawa, Arakane-bashi, 14.X.1999, AO, S. Yamanashi: 1 male, Minobu-cho, Aimata, 9.IX.1994, TH, L. Gifu: 3 females, Hikage-daira, 20.IX.1998, HN. Shizuoka, Shizuoka-shi: 6 males, 14 females, Ushizuma, Moriyama-sawa, 120 m, 26.VII–27.VIII.1995, TH, L; 4 males, 7 females, Umegashima, Rokurogi, 420 m, 26.VII.1995, TH, L; 3 females, Yunoshima, Warashina-gawa, 280 m, 15.X.1995, TH, L; 8 females, ibid., 19.VIII.1997, TH, L; 2 males, 2 females, Yuyama, Yuyama-gawa, 180 m, 22.X.1995, TH, L; 1 male, Nyujima, Abe-kawa, 375 m, 21.VIII.1994, TH, L; 28 females, Tawarazawa, Abe-kawa, 130–150 m, 22.X.1995, TH, L; 10 females, ibid., 23.V.1994, TH, L; 4 males, 17 females, Yujima, Abe-kawa, 150 m, 19.VIII.1995, TH, L; 54 females, Nyujima, Abe-kawa, 375 m, 25.IX.1995, TH, L. Shiga: 1 male, Higashi-omi-shi, Eigenji-cho, Kanzaigawa, 400 m, 5.IX.1998, TH, L; 1 male, Koka-shi, Tsuchiyama, Okawara, 11.I.2005, NKA, L (MKNM). Nara: 1 female, Higashi-yoshino-mura, Takami-gawa, 15.VI.1996, TN. Hyogo: 2 females, Asago-shi, Ikuno-damu, 23.VII.1997, T. Murakami; 4 males, 18 females, Asago-shi, Wadayama, Miya, Ishibe-jinja, 3.XI.2006, K. Inazu & TI, L. Hiroshima: 1 male, Kita-hiroshima-cho, Geihoku, Yahata-shitsugen, 23.IX.1997, HN.

Remarks. The male of this species is similar to those of H. moselyi Ulmer, 1932 , distributed in the Asian Far East ( Kumanski 1990), and H. giudicellorum Botosaneanu, 1980 , known from Europe ( Malicky 2004a). All have long apico-lateral apodemes, the dorsal plate subtriangular, the subgenital plate membranous and broad, and the inferior appendages short with 2 lobes. Hydroptila botosaneanui is distinguished from the latter by its phallic apparatus with the subapical process almost straight and elongate with the apex curved. The female of this species is discriminated from that of H. kakidaensis , a related species in Japan, by lack of setae on the dorso-lateral margins of segment VIII.

Distribution. Japan (Hokkaido, Honshu), Korea, Russian Far East (continental parts). Newly recorded for Japan.

Habitat. Adults were collected in mountain lakes and streams.

Japanese name. Kyunaga-hime-tobikera (newly given here).

Figures

FIGURE 14. Distributions of 12 species of Hydroptila in Japan and adjacent areas. For clarity, nearby collection sites in Japan are grouped together as a single point and the sites are roughly plotted in adjacent, non-Japanese areas.

FIGURES 11 – 12. 11, H. kakidaenisis: A – F, male; A—ventral process, lateral and ventral (only apex); B—genitalia, lateral; C—same, dorsal; D—same, ventral; E—dorsal plate, variation, dorsal; F—phallic apparatus, lateral; G – I, female; G—abdominal segments, VIII – X, lateral; H—same, ventral; I—segment VIII, dorsal. 12, H. botosaneanui: A – F, male; A—ventral process, lateral and ventral (only apex); B—genitalia, lateral; C—same, dorsal; D—same, ventral; E—dorsal plate, variation, dorsal; F— phallic apparatus, lateral; G – I, female; G—abdominal segments, VIII – X, lateral; H—same, ventral; I—segment VIII, dorsal.