The genus Pseudoxyethira Schmid (Trichoptera, Hydroptilidae) in Japan Author Ito, Tomiko text Zootaxa 2017 2017-11-11 4319 1 194 200 journal article 32140 10.11646/zootaxa.4319.1.12 7a0624d4-e72a-4a7f-9bec-a0524014eaec 1175-5326 888587 44605Db1-7E00-4F2D-9D44-4F2B80B99100 Pseudoxyethira funatsuki sp. nov. ( Figs. 15–19 ) Diagnosis. The male of this species is somewhat similar to that of a Philippine species, Pseudoxyethira cayasana ( Wells & Mey 2002 ) , in having divided apical spines of the phallus, but is clearly distinguished from the latter in the shape of its inferior appendages; short, not exceeding segment IX, parallel-sided with smooth mesal margins and rounded apices in this species; in contrast to inferior appendages long, exceeding the dorsal plate, and with rugged mesal margins and convex apices as in P. cayasana . Male ( Figs. 15–18 ). Black. Small, length of each forewing and hind wing 1.5–1.6 mm and 1.2–1.3 mm , respectively (n = 5); androconia present. Antennae 17-segmented, 1 st and 2nd segments larger than apical segments, 0.4 mm long (n = 5). Spur formula 0, 2, 4, without knob on each foretibia. Genitalia. Dorsal plate very short, membranous, apical margin broadly concave. Inferior appendages parallelsided, long, with length 4 times width; rounded apically. Phallus long, bifurcated distally, apical 1/ 5 in form of slender spines; spines strongly curved ventrad, each with papilla at base. Type series. Holotype . Male , Ryukyu Islands , Iriomote-jima , Nishi-funatsuki-gawa, Nishi-funatsuki-bashi, 24˚18’10” N, 123˚51’34” E, 10 m a.s.l. , 30.x.2012 , TI (CBM-ZI 164650). Paratypes . 3 males , same data as holotype (CBM-ZI 164651–164653). FIGURES 9–18. Males of 2 species of Pseudoxyethira . Pseudoxyethira thingana (Oláh) (9–14): 9, right antenna, right lateral; 10, genitalia, left lateral; 11, same, dorsal; 12, same, ventral; 13 and 14, apices of right inferior appendage, ventral, variation; specimens, Okinawa-jima, Kunigami-son, Yona-gawa. Pseudoxyethira funatsuki sp. nov . (15–18): 15, left antenna, left lateral; 16, genitalia, left lateral; 17, same, dorsal; 18, same, ventral; specimens, Iriomote-jima, Nishi-funatsuki-gawa (type locality). Abbreviations as in Figs 1–8. FIGURE 19. Distributions of 3 species of Pseudoxyethira in Japan. Other specimens . Ryukyu Islands . Iriomote-jima : 3 males , same data as holotype ; 2 males, type locality, 21.iii.2016 , TI; 2 males, Urauchi-gawa, Kampire-no-taki, 4.iv.2005 , TI; 3 males , same locality, 29.x.2012 , TI ; 2 males , same locality, 22.iii.2016 , TI ; 4 males , same locality, 22.x.2016 , TI ; 1 male, Aira-gawa, 1.xii.2013 , TI; 1 male , same locality, 21.iii.2016 , TI ; 2 males, Yuchin-gawa, small fall, 23.iii.2016 , TI. Ishigaki-jima : 1 male, Omoto-dake, small fall near foot path, 26.x.2012 , TI. Distribution ( Fig. 19 ). Ryukyu Islands (Iriomote-jima, Ishigaki-jima). Habitat. Adults of this species were collected near waterfalls and rapid streams with large rocks. Etymology. The name “ funatuski ” is a noun in apposition, coined from the type locality. Japanese name. Funatsuki-koke-himetobikera.