Hydroptila phenianica Botosaneanu, 1970

Ito, Tomiko, Ohkawa, Ayuko & Hattori, Toshio, 2011, The genus Hydroptila Dalman (Trichoptera, Hydroptilidae) in Japan, Zootaxa 2801, pp. 1-26 : 2-5

Hydroptila phenianica Botosaneanu, 1970

( Figs. 1 , 14 A)

Hydroptila phenianica Botosaneanu, 1970 , 290–291, pl. 12, male, female, Korea; Arefina et al., 2002, 99, Russian Far East (continental parts).

Hydroptila matsuii Kobayashi, 1974 , 67–68, pl. 25, male, Japan (Honshu); Ito, 2005, 441, 446, figs. 7–8, male; synonymized by Nozaki & Tanida (2007).

Adult. Wings dark brown with several small lighter markings. Antennae brown to light brown with darker markings at about half length and at apices.

Male. Lengths of forewing, hindwing and body 2.2–3.1 mm, 1.9–2.7 mm and 2.2–3.2 mm, respectively (n=5). Antennae 29–30-segmented; length 0.9–1.5 mm (n=5). Ventral process of sternite VII small, apex subacute. Segment IX with large subtriangular apico-lateral apodemes and slightly convex dorsal and ventral margins. Dorsal plate semi-membranous, elongate rectangular, apical margin deeply concave in dorsal view. Subgenital plate shorter than dorsal plate, composed of sclerotized ventral plate and membranous dorsal lobe; in ventral view ventral plate triangular, dorsal lobe rounded; 2 very short setae present on ventral plate. Phallic apparatus elongate with slender, long subapical process (not subapical position but likely homologous with subapical process in Wells (1979)), without titillator. Inferior appendages narrow at base, in lateral view gradually expanded at about1/5–3/5 length then tapered to acute apex; in ventral view narrowly triangular, with acute apices directed dorso-laterad.

Female. Lengths of forewing, hindwing and body 2.6–3.0 mm, 2.0– 2.6 mm and 2.7–3.3 mm, respectively (n=5). Antennae 23–25-segmented and 0.9–1.0 mm long (n=5). Abdomen increasingly darker and more setose from segment I to segment VII. Sternite VI bearing small acute ventral process. Segment VIII: Dorsally distinctly shorter than ventrally in lateral view; tergite and sternite heavily sclerotized and fused laterally; tergite consisted of 2 subquadrate sclerites, each sclerite with large excision at antero-mesal angle and 4 long setae near distal margin; sternite subquadrate, almost straight anteriorly, slightly convex laterally, posteriorly slightly concave mesally, with 4 pairs of setae; in ventral view internal sclerite extended from anterior margin of segment VIII to basal 3/4 of segment VII, semi-membranous triangular at base, sclerotized rod-shaped at distal 3/4. Bursa copulatrix thin, lozengeshaped.

Specimens examined. Hokkaido: 1 female, Wakkanai-shi, Koitoi, Masuhoro-gawa, 9.VIII.1999, TI & AO, L; 7 males, 27 females, Sarufutsu-mura, Nigori-kawa, Wakakusa-bashi, 1.VIII.2007, TI, P; 1 female, Sarufutsu-mura, Nigosen-gawa, Shobu-bashi, 31.VII.2007, TI, P; 1 female, Eniwa-shi, Moizari-gawa, Saiwai-bashi, 7.VIII.2010, TI, L; 1 female, Chitose-shi, Bibi-gawa, Chitose-ko, 20.VIII.2007, TI, L; 1 female, Chitose-shi, Bibi-gawa, Bibibashi, 6.IX.2007, TI, L; 1 male, 2 females, Tomakomai-shi, Uenae, Bibi-gawa, 4 m above sea level, 8– 16.VII.2010, TI, L; 1 male, Assabu-cho, Uzura-gawa, Kogetsu-bashi, 3.VIII.2006, TI, L. Honshu. Aomori: 1 female, Tsugaru-shi, Hirataki-mura, 9–21.IX.2006, T. Yoshida, M; 3 females, Higashi-dori-mura, Noushi-gawa, 19 m, 14.IX.2010, TI, L. Iwate: 3 females, Oshu-shi, Koromogawa-mura, Omori, 200 m, 21.VI.1997, TH, L. Akita: 1 male, Daisen-shi, Nakasen-machi, 10.VI.1998, HN; 1 female, Gojome-machi, Jabami, 12.IX.2003, TH, L. Yamagata: 1 male, Kaneyama-machi, Kanayama-gawa, Kanayama-bashi, 11.X.1999, AO, S; 3 males, 4 females, Kaneyama-machi, Kanayama-gawa, Arakane-bashi, 11.X.1999, AO, S. Ibaraki: 13 males, 6 females, Joso-shi, Ishige-machi, Kinu-gawa, 16.VII.1997, K. Tojo; 5 larvae, Ishioka-shi, Yasato, Shobu-sawa, St. B, 24.XI.1997, NKA; 109 males, 215 females, Ishioka-shi, Yasato, Shobu-sawa, St. A, 21–24.V.1998, NKA; 7 males, 50 females, Yasato, Shobu-sawa, St. B, 4–11.VII.1998, NKA. Tochigi: 8 females, Kitsuregawa-cho, Aka-gawa, 24.IX.2002, TI, L. Tokyo: 2 females, Fussa-shi, Tama-gawa, Nagata-bashi, 23.VII.1993, TN, L; 1 male, Shibuya, Honmachi, 4.X.1999, NKA, L (MKNM). Kanagawa: 1 male, Odawara-shi, Kotobuki-cho, Sannou-gawa, 24.VIII.2000, TN. Niigata: 1 male, 1 female, Itoigawa-shi, Omachi, Mushi-gawa, 160 m, 15.IX.2003, TH, L; 4 females, Nagaoka-shi, Sakon, Shinano-gawa, 9.X.2001, T. Fujitani; 3 males, 12 females, Nagaoka-shi, Oyazawa, 9.VIII.2000, NKA, L (MKNM). Ishikawa: 6 males, 16 females, Kanazawa-shi, 4.VIII.1998, T. Murakami; 1 female, Wajima-shi, Mitsui-cho, Sakata, 16.VIII.1998, M. Maruyama. Nagano: 1 male, Azumino-shi, Toyoshina, Oguchi-zawa, 17.VII.1999, K. Sugisima; 8 females, ibid., 6.VIII.2000, K. Sugisima; 11 females, Hakuba-mura, Oyomi-shitsugen, 16.IX.2003, TH, L. Gifu: 213 males, 34 females, Kagamihara-shi, Kawashima-kasada-machi,, Aqua Restoration Research Center, 9.V–4.VI.1999, T. Shimizu, L, S & M. Shizuoka: 1 male, 1 female, Shizuoka-shi, Ashikubo, Yosooka-gawa, 130 m, 16.VIII.1997, TH, L; 1 male, Shizuoka-shi, Ashikubo, Matsuzaki-bashi, 75 m, 19.XI.2005, TH, L; 2 males, Shizuoka-shi, Kujiraga-ike, 22.X.1995, TH, L; 1 female, Shizuoka-shi, Kayama, 150 m, 28.V.2003, TH, L; 3 males, 12 females, Shizuoka-shi, Mizumiiro, 150 m, 27.IX.1995, TH, L; 9 males, 6 females, Shizuoka-shi, Ushizuma, Moriyama-sawa, 120 m, 25.V–27.VIII.1995, TH, L; 1 female, Shizuoka-shi, Yunoshima, Warashina-gawa, 280 m, 19.VIII.1995, TH, L; 13 males, 6 females, Shizuoka-shi, Yuyama, Yuyama-gawa, 180 m, 22.X.1995, TH, L; 27 males, 6 females, Shizuoka-shi, Yoshizu, 50 m, 21.V–28.VII.2001, TH, L; 43 males, 112 females, Shizuoka-shi, Endoshinden, Abe-kawa, 70 m, 25.VIII.1995, TH, L; 1 male, 31 females, Shizuoka-shi, Tawarazawa, Abe-kawa, 130 m, 22.X.1995, TH, L; 1 male, Shizuoka-shi, Tawarazawa, Abe-kawa, 135 m, 9.VI.2005, TH, L; 3 females, Shizuoka-shi, Tawarazawa, Abe-kawa, 150 m, 23.V.1994, TH, L; 8 males, 44 females, Shizuoka-shi, Yujima, Abe-kawa, 150 m, 19.VIII.1995, TH, L; 1 female, Shizuoka-shi, Nyujima, Abekawa, 375 m, 25.IX.1995, TH, L; 17 males, 7 females, Shizuoka-shi, Minami-abe, Suruga-ohashi, 25.VI– 19.XI.2005, TH, L; 4 females, Fujieda-shi, Terashima, Seto-gawa, 60 m, 13.XI.2005, TH, L; 3 females, Shimizucho, Kakida-gawa, 27.V.2001, TN & KT, L; 1 male, 11 females, Mori-machi, Oguni-jinja, 5.VII–1.VIII.2000, K. Sugisima; 1 male, 3 females, Hamamatsu-shi, Inasa-cho, Tazawa, 31.VII.2000, K. Sugisima. Aichi: 4 males, Toyota-shi, Hayashizore, 1.V.1998, HN; 5 males, 7 females, Toyota-shi, Nomiyama-cho, Kashio-gawa, 26.IX.1999, Tanaka; 23 males, 8 females, Toyota-shi, Fuso-cho, Yahagi-gawa, 23.V.2000, HN; 5 females, Toyota-shi, Kujudaira-cho, Tomoe-gawa, 30.V.2000, HN & H. Morita; 2 females, Shinshiro-shi, Aigo, Shimada-gawa, 5.IX.1998, HN; 1 female, Seto-shi, Kaisho-no-mori, Taisho-ike, 18.VIII.1996, HN; 2 males, Togo-cho, Morowa, 24.IV.1998, HN; 1 female, Asahi-cho, Oda, 9–10.VII.1999, K. Sugisima. Mie: 11 males, 10 females, Kameyama-shi, Seki-cho, Washiyama, 29–30.IX.2006, NKA, L (MKNM). Shiga: 1 female, Takahama-shi, Imazuhama, 2.VII.1986, N. Kobayashi (LBM); 1 female, Higashi-omi-shi, Eigenji-cho, Kanzai-gawa, 400 m, 5.IX.1998, TH, L; 5 males, 4 females, Higashi-omi-shi, Fuse, Fuse-tameike, 14–15.IX.2008, NKA, L (MKNM); 2 males, 4 females, Kusatsushi, Biwa-ko, 10.VII.1999, HN; 6 males, Koka-shi, Minakuchi, Nasaka, Imaike, Daichiji, 4.VII.2009, NKA, L (MKNM); 4 females, Koka-shi, Tsuchiyama, Minami-tsuchiyama, 15.IX.2008, NKA, L (MKNM). Kyoto: 1 male, Kyoto-shi, Waki-cho, Kizu-gawa, 2.IX.1997, K.Tojo; 11 males, 14 females, Kasagi-cho, Kizu-gawa, 2.IX.1997, K.Tojo. Hyogo: 3 females, Kamigori-cho, Takayama, Amuro-gawa, 27–28.VII.2000, T. Murakami; 2 males, Kawanishi-shi, Ina-gawa, 26.VII.2001, T. Murakami; 1 female, Yamasaki-cho, Ibo-gawa, 8.VIII.2001, AO; 3 females, Yabu-shi, Oya-akenobu, Akenobu-gawa, 400 m, 23.IX.2003, TH, L; 10 females, Asago-shi, Wadayama, Ishibe-jinja, 3.XI.2006, K. Inazu & TI, L. Tottori: 1 female, Nichinan-cho, Yukawa, Wakamatsu-gawa 580 m, 14.IX.2002, TH, L. Shimane: 8 females, Ota-shi, Sanbe, Ukinuno-no-ike, 5.VIII.2001, AO, L; 2 males, 31 females, Tsuwano-cho, Deiri, 8.X.2001, HN. Okayama: 6 females, Tsuyama-shi, Kagamino-cho, Terawada, Kagami-gawa, 7.VIII.2001, HN & AO. Ya m ag u c hi: 1 female, Mine-shi, Kama, Koto-gawa, 7.X.2001, HN. Shikoku. Tokushima: 5 females, Anan-shi, Naka-gawa, 11–13.X.1998, S. Tsukaguchi. Ehime: 1 female, Uchiko-machi, Oda, Miyanotani, 2.VII.1999, E. Yamamoto, L; 1 female, Ozu-shi, Hijikawa, Shimasaka-damu, 7–9.VIII.2000, S. Tsukaguchi. Kochi: 3 females, Kami-shi, Tosa-yamada-cho, Sano, 5.X.2000, HN. Kyushu. Fukuoka: 8 males, 2 females, 16 prepupae, 1 larva, Ukiha-shi, Yoshii-machi, Nakamachi, Kose-gawa, 8.IV.1997, TN & AO; 7 males, 16 females, Fukuoka-shi, Sawara, Muromi-gawa, 19.IX.2000, AO, L; 9 males, 78 females, 4 pupae, 1 prepupae, Usuimachi, Kodai, Kodai-bashi, 20.IX.2000, AO, L; 1 prepupa, 11 larvae, Kaho-machi, Okuma, Onga-gawa, 20.IX.2000, AO; 6 males, 20 females, Hisayama-machi, Ino, Todoroki-gawa, Todoroki-bashi, 21.IX.2000, AO, L; 1 male, Chikushino-shi, Yoshiki, 10.V.1997, HN. Nagasaki: 3 males, 7 females, Omura-shi, Kori-gawa, 17.IX.2002, TH, L. Nagasaki, Tsushima Islands: 6 females, Tsushima-shi, Oku-azamo, 2.IX.1987, TI, L. Kumamoto: 3 males, 11 females, Minami-aso-mura, Hakusui, Nakamatsu, Aso Tanibito Museum, VII–X.2002, AO; 1 female, Minami-aso-mura, Hakusui, Terasaka-suigen, 19.XI.2001, AO, S; 14 males, 4 females, Minami-aso-mura, Hakusui, Taiko-bashi, 3.V.2002, AO; 3 females, Ryuhoku-cho, Hikawa-bashi, 4.V.2002, AO; 1 male, 5 pupae, 2 prepupae, 1 larva, Sagara-mura, Yanase, Gongengawara, Kawabe-gawa, IX.2002, AO. Oita: 1 female, Nakatsushi, Yabakei-machi, Miyazono, Yamaguni-gawa, 17.IV.2004, TH, L. Miyazaki: 3 females, Aya-cho, Yotsue, Honjo-gawa, 40 m, 21.IV.2004, TH, L.

Remarks. This is the commonest hydroptilid in the 4 main islands of Japan (Hokkaido, Honshu, Shikoku, Kyushu). The male of this species is similar to that of H. thuna Oláh, 1989 , but distinguishable from the latter as follows: The ventral plate of the subgenital plate is broadly triangular and acuminate apically and the subapical process of the phallic apparatus is slender in H. phenianica ; in H. thuna the ventral plate is produced distally to form a slender pointed process and subapical process is strap-like. The female of this species is distinguished from that of H. thuna by having 2 subquadrate sclerites on the dorsum of segment VIII.

Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu, Tsushima Islands), Korea, Russian Far East (continental parts).

Habitat. Adults were collected from the middle and lower reaches of streams. Japanese name. Matsui-hime-tobikera.

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 1 – 2. 1, Hydroptila phenianica: A – C, male; A—abdominal segments VII – X, lateral; B—genitalia, dorsal; Csame, ventral; D – G, female; D—abdominal segment VIII, lateral; E—same, dorsal; F—abdominal segments VI – X, ventral; G—bursa copulatrix, ventral. 2, H. thuna: A – C, male; A—abdominal segments VII – X, lateral; B—genitalia, dorsal; C—same, ventral; D – F, female; D—abdominal segment VIII, lateral; E—same, dorsal; F— abdominal segments VII – X, ventral. Abbreviations: VI – X, abdominal segments VI – X; dpl – dorsal plate; dl spl – dorsal lobe of subgenital plate; ia—inferior appendage; pa—phallic apparatus; sub pr—subapical process; vp spl—ventral plate of subgenital plate.