Goera kawamotonis Kobayashi 1987

Nozaki, Takao & Tanida, Kazumi, 2006, The genus Goera Stephens (Trichoptera: Goeridae) in Japan, Zootaxa 1339, pp. 1-29 : 12-13

Goera kawamotonis Kobayashi 1987

Fig. 6

Goera kawamotonis Kobayashi 1987 , 24, 34, male; Arefina 1997, 126, 128, male. Goera sp. GA: Tsuda and Akagi 1956, 39–40, larva, case, male genitalia; Tsuda and Akagi 1962, 140, larva.

Adult. Body, wings, antennae yellowish brown. Head short; ocelli absent; anterior setal warts round; posterior setal warts large and round. Antennae 6–8.5 mm long; basal segment ca. 1 mm long, with long setae. In male maxillary palpi, distal segment bananashape in lateral aspect, ca. 2 times as long as wide, membranous and elastic, bearing long pale setae on outer surface and dark brown scales on mesal surface. Male abdominal sternite VI with a single spine, 7–10 times as long as wide, often slightly broad at apex. Female abdominal sternite VI bearing usually 1 process but occasionally 2, 3–5 times as long as wide. Forewings 6.5– 10 mm long, with relatively rounded apex in male.

Male genitalia. Segment IX narrow and posterior margin rounded in lateral aspect. Tergum X with dorsal plate, trapezoid; ventral portion semi-membranous, divided at apical third, each apices acute. Preanal appendage short, expanded at apex. Basal segment of inferior appendage rhomboid in lateral and ventral aspect. Distal segment of inferior appendage with 2 processes; dorsal one long, arcuate in lateral aspect, bearing setae on outer surface at apical half; mesal process slender with acute apex curved dorsad, bearing minute setae on outer surface. Phallus simple, slightly arcuate in lateral aspect.

Female genitalia. Tergum IX triangular in lateral aspect, semicircular in dorsal aspect, delimited from tergum X. Tergum X rhombic in lateral aspect, excavated at apex in dorsal and ventral aspect. Lamellae relatively large with rounded apex in lateral aspect. Gonopod plate wider than length, apicomesal process trapezoidal, bearing many setae.

Larva. Tsuda and Akagi (1956) described the larval stage of this species for the first time as Goera sp. GA.

Specimens examined. Aichi: 10 males, Yahagi-gawa, Toyota-shi, 30.viii.1999, Mano (TN); Hyogo: 1 female, Yumesaki-gawa, Miyaoki, Yumesaki-cho, 15.x.1989, C. Kugo (TN); 15 males, 30 females, Terasaka, Izushi-cho, Toyooka-shi, 17–18.ix.1997, M. Aoyagi (TN); Hiroshima: 3 females, Minamikannoncho, Nishi-ku, Hiroshima-shi, 10.v.1999, S. Nakamura (TN); 1 female, Yagi, Asaminami-ku, Hiroshima-shi, 24.iv.1999, S. Nakamura (TN); 1 male, Yoshida, Yoshida-cho, Akitakata-shi, Hiroshima, 25.iv.1999, S. Nakamura (TN); 2 males, 1 female, ibid., 31.viii.1999, S. Nakamura (TN); 1 male, 4 females, Akimachi, Miyoshi-shi, Hiroshima, 30.vii.1999, S. Nakamura (TN); Shimane: 3 males, Kawagoe, Sakurae-cho, Gozu-shi, 2.v.1999, S. Nakamura (TN); Yamaguchi: 1 female pupa with larval exuviae, Nishiki-cho, Iwakuni-shi, 12.vi.1992, I. Yokota (TN); Fukuoka: 1 male, Nakamachi, Yoshii-machi, Ukiha-shi, 4.v.1988, N. Gyotoku (TN); 1 male, ibid., 23.vi.1988, N. Gyotoku (TN); 1 male, ibid., 6.v.1989, N. Gyotoku (TN); 1 female, ibid., 24.vi.1989, N. Gyotoku (TN).

Distribution. Japan (central to western Honshu, Shikoku, Kyushu), Russia (Khabarovsk, Primorye).

Japanese name. Kawamoto-ningyo-tobikera.

Remarks. Tsuda and Akagi (1956) described a larval specimen as Goera sp. GA from the River Yahagi, Aichi, central Japan. They also provided illustrations of the male genitalia, which suggested that Goera sp. GA is the larval stage of G. kawamotonis ( Nishimoto and Morita 2001) . We ascertained that Goera sp. GA is the larva of this species by the metamorphotype method.

Yang and Armitage (1996) described a similar species, Goer morsei Yang and Armitage from Sichuan, China, and provided the diagnostic characters of the male. At the same time, the male genitalia illustrated by Arefina (1997) as G. k a w a m o t o n i s from continental Russia agrees with those redescribed here.

Figures

FIGURES 5 – 6. 5, Goera curvispina. Male sternite VI: a, ventral view. Male genitalia: b, lateral view; c, dorsal view; d, ventral view; e, phallus, dorsolateral view. Female genitalia: f, lateral view; g, dorsal view; h, ventral view. 6, Goera kawamotonis. Male sternite VI: a, ventral view. Male genitalia: b, lateral view; c, dorsal view; d, ventral view; e, phallus, lateral view. Female genitalia: f, lateral view; g, dorsal view; h, ventral view.