taxonID	type	description	language	source
03EC7639FF96531FFF49F98DAEAB5A77.taxon	description	(Fig. 5)	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF96531FFF49F98DAEAB5A77.taxon	description	Male genitalia (Figs 5 A – 5 G). Almost bilaterally symmetrical except phallus. Segment IX (IX) large, subtriangular and produced anterad in lateral view, subquadrate with broad anterior concavities in dorsal and ventral views. Dorsal plate (d. pl.) membranous, round in lateral view, pentagonal with deep, U-shaped, posteromesal concavity in dorsal view. Subgenital plate (s. pl.) distinctly longer than dorsal plate, broad-based, strongly tapered, and curved ventrad in apical half; with 2 pairs of short slender lateral processes medially, anterior pair (ap. s. pl.) directed anterad at first and then evenly recurved dorsolaterad in dorsal view, posterior pair (pp. s. pl.) directed laterad in dorsal view. Inferior appendages (i. a.) large, subquadrate, gradually expanded posteriorly, each with 2 thick long setae near posterodorsal corner, many short setae on lateral surface and slender large V-shaped sclerite on dorsomesal surface. Phallus long, titillator (ti.) encircling at mid-length and elongate posteriorly to middle of aedeagus. Specimens examined. China: Hei-long-jiang, Yi-chun City, Wu-yi-long, Wu-yun River in the Town of Yongsheng, holotype male, 31. ii. 1993, Sun C-h (deposited in the Department of Entomology, Nanjing Agricultural University, Nanjing). Japan: 214 males, 347 females, 41 pupae, 13 final instar larvae as Ugandatrichia shinshiroensis Ito et al. 2018 from 9 localities in Honshu & Shikoku, 2012 – 2015 (detail data in Ito et al. 2018).	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF96531FFF49F98DAEAB5A77.taxon	distribution	Distribution. China (Hei-long-jiang), Japan (Honshu, Shikoku).	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF96531FFF49F98DAEAB5A77.taxon	discussion	Remarks. This species was originally described and diagnosed based on a male from northeastern China with the following characteristics: The distal half of the subgenital plate is strongly downcurved and apically acute in lateral view; the inferior appendages have posterior margins slightly concave and a large rectangular basal projection mesally; the phallic apparatus has a titillator arising at almost half length and has the aedeagus slightly enlarged and bilobed apically. The male of Ugandatrichia shinshiroensis (Figs 5 A – 5 G), described originally from central Japan, differs little from that of Allotrichia rhynchophyllum. Only the slender projections of subgenital plate and dorsal plate differ slightly as follows: The projections are short and the dorsal plate has a large U-shaped concavity apically in U. shinshiroensis (Fig. 5 B), whereas the projections are long and the dorsal plate is almost straight without a concavity in A. rhynchophyllum (Figs 2 A, 2 B in Zhou et al. 2016). However, the projections and dorsal plate are individually variable even in specimens from the same site (Figs 5 F, 5 G). Thus, we recognize U. shinshiroensis as a junior synonym of A. rhynchophyllum. Species of the genus Allotrichia McLachlan are found in the West Palearctic (8 extant and 3 fossil) and East Palearctic (1 species) regions (Zhou et al. 2016) and, with this change, the genus is now recorded in Japan. The female, pupa, larva and case of this species were described and diagnosed under the name U. shinshiroensis (Ito et al. 2018). The larval characteristics and their cases conform with those of a widespread European species, A. pallicornis (Eaton) (Wallace et al. 1990, Waringer & Graf 2011), in having laterally compressed larvae without any dark patterns on the head and thorax, swollen apicoventral corners on the tibiae of 3 thoracic legs, and laterally flattened cases made of filamentous algae. However, several features such as some pairs of ventral sclerites on the pro-and mesonota, ovoid chloride epithelia on abdominal segments IV – VIII, and a single median gill on segment IX (Figs 3, 4 by Ito et al. 2018) have not been observed in the European species. The habitat and ecology were also reported by Ito et al. (2018) for the species in Japan. The larvae and pupae were found in the middle reaches of fast-flowing streams. Light trap collections in central Japan demonstrated that the adults have long flight periods, from spring to autumn. These ecological characters are also very similar to those reported for A. pallicornis in Europe (Graf et al. 2008). However, the microhabitat of pupae and larvae in Japan, i. e., on small loose rocks inserted in crevices, may be distinct. Japanese name. Kawari-ô-hime-tobikera-zoku (newly given here). Shinshiro-ô-hime-tobikera (assigned originally to U. shinshiroensis).	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF915312FF49FA98AC0A5CFC.taxon	description	(Fig. 2)	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF915312FF49FA98AC0A5CFC.taxon	description	Male (Figs 2 A – 2 D). Segment IX short with well-produced anterior margin, long mid-dorsal process (d. pr.) on posterodorsal margin and pair of membranous ventrolateral processes (l. p.) on posterior margin, ventrolateral process distinct in ventral view but often indistinct in lateral view. Dorsal plate (d. pl.) long, subrectangular, with shallow apical cleft in dorsal view, mostly membranous with sclerotized lateral margins. Subgenital plate (s. pl.) broadly triangular in ventral view. Inferior appendages (i. a.) slender at basal 1 / 3 and expanded at apical 2 / 3, in lateral view with rounded, setose apical margins; in ventral view elongate-triangular. Phallic apparatus with constriction at 1 / 3 length, titillator absent, aedeagus (ae.) and subapical process (sub. pr.) directed caudad. Female (Figs 2 E – 2 H). Segment VIII with anterolateral margin slightly produced in lateral view, posterior margin with 3 – 4 twisted marginal setae; its internal sclerite large pentagonal with well sclerotized anterior and posterior bands. Bursa copulatrix narrow, ovate. Specimens examined. Japan, Honshu: Aichi: 5 males, 5 females, Shinshiro-shi, Toyooka, Ichinose, Ôtsutani-gawa, near river mouth, 13. vi. 2015, H. Nishimoto, light trap. Mie: 1 male, Kameyama-shi, Washiyama, 29 – 30. ix. 2006, N. Kawase, light pan trap (deposited in the Minakuchi Kodomo-no-kuni Nature Museum, Shiga, No. MITR 20090076).	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF915312FF49FA98AC0A5CFC.taxon	distribution	Distribution. Russia (South Siberia, continental part of Far East), Japan (Honshu). New to Japan.	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF915312FF49FA98AC0A5CFC.taxon	discussion	Remarks. The male of this species is somewhat similar to that of Hydroptila oguranis Kobayashi 1974, distributed in Japan, in having large dorsal plate and expanded apical parts of inferior appendages, but distinctly distinguishable from the latter by the long dorsal process (d. pr.) of segment IX. Male specimens in Japan (Figs 2 A – 2 D) differ slightly from those in Siberia (Botosaneanu, 1993) in having a pair of membranous lateral processes (l. p.) on the posteroventral margins of segment IX. However, we recognize this to be either minor intraspecific variation or, since the processes on the Japanese specimens are often small and difficult to see due to transparency, simply structures omitted from the original description. The females are described here for the first time. The adults of this species were collected near fast-flowing rivers with stony substrates. Japanese name. Senaga-hime-tobikera (newly given here).	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF945310FF49FCE5AC2B5C13.taxon	description	(Fig. 3)	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF945310FF49FCE5AC2B5C13.taxon	description	Male (Figs 3 A – 3 E). Segment IX with roundly produced anterolateral margins and pair of setose lateral processes (l. p.); lateral processes directed caudad, subacute apically. Tergite X composed of large dorsal plate (d. pl.) and pair of spinous processes (s. pr.); dorsal plate semitransparent, semicircular in dorsal and ventral views, with 4 pairs of thick spines in transverse row at median section ventrally; spinous processes emerging laterally from ventral half of tergite, each with basal half broad and abruptly narrowing to spinous apical half, directed caudad in lateral view and mesocaudad in ventral view. Subgenital plate (s. pl.) membranous, broadly convex with small shallow concavity apicomesally, distinctly shorter than dorsal plate. Inferior appendages (i. a.) strongly sclerotized, rod-shaped in lateral view, broad basally and narrowing and diverging in ventral view, each with many thick and fine setae at distal 2 / 3. Phallic apparatus long, almost straight, with constriction at middle, slender distally; titillator absent; aedeagus (ae.) shorter than subapical process (sub. pr.). Female (Figs 3 F – 3 H). Segment VIII cylindrical, with 3 pairs of long setae in transverse row ventrally and pair of long setae dorsally at midlength, setae slightly twisted, ventral sclerite dark and conspicuous, lozenge-shaped in ventral view, bearing numerous very fine spines on surface. Vaginal apparatus narrow, long, sublanceolate. Specimens examined. Japan, Hokkaido: 1 male, Eniwa-shi, Honryu- 2 - go-bashi, 21. viii. 2009, T. Ito, light pan trap; 3 males, Chitose-shi, Monbetsu-gawa, 240 m, 14. vii. 2000, T. Ito et al., light trap; 1 male, Kuromatsunai-cho, Utasai, Utasai-gawa, 16. vi. 2005, N. Kuhara. Honshu: Iwate: 2 males, Ôshu-shi, Koromogawa-ku, Ômori, 19 – 20. vi. 2007, T. Ito, light. Shikoku: Ehime: 7 males, 7 females, Oda-cho, Koyamama, 6 – 22. vi. 2000, E. Yamamoto & M. Doi, Malaise trap; 1 male, 1 female, Kumakogen-cho, Omogo, small stream near Omogo Mountain Museum, 23. v. 1999, T. Ito & A. Ohkawa; 4 males, 12 females, same locality, 8. vi. 2011, T. Nozaki et al. Kochi: 2 males, Nangoku-shi, Nakanokawa, 14. v. 2004, M. Takai; 3 males, Higashi-tsuno-mura, Tengu-ike, 8. v. 2004, M. Takai; 1 male, 2 females, Shukuge-shi, Isshobara, 30. iv. 2004, M. Takai. Kyushu: Miyazaki: 2 males, 2 females, Kitagawa-cho, Kumata, Kita-gawa, 15 m, 22. iv. 2004, T. Hattori.	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF945310FF49FCE5AC2B5C13.taxon	distribution	Distribution. China (Heilongjiang), Korea (Gyeongsangbuk-do), Japan (Hokkaido, Honshu, Shikoku, Kyushu). New to Japan.	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF945310FF49FCE5AC2B5C13.taxon	discussion	Remarks. Males of this species are very similar to those of Hydroptila spinosa Arefina and Armitage 2003, known in the Russian Far East and Japan, in having a large semicircular dorsal plate with 4 pairs of spines ventrally and strongly sclerotized divergent inferior appendages. However, H. introspinata is clearly distinguished from H. spinosa by the presence of the spinous processes of tergite X. Females of this species, described here for the first time, are very similar to those of H. spinosa; they are not discriminated from each other in the present study. This species is recorded in Japan for the first time, and some of the specimens in the samples listed above were misidentified as H. spinosa by Ito et al. (2011). This species was found together with H. spinosa in several localities in Hokkaido and Honshu, and found without H. spinosa in all localities in Shikoku and Kyushu. Japanese name. Hari-hime-tobikera (newly given here).	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF915317FF49FF41AD1B5AEE.taxon	description	(Fig. 1) Hydroptila sp.: Ito, 2015, 15, Okinawa-jima.	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF915317FF49FF41AD1B5AEE.taxon	diagnosis	Diagnosis. The male of this species is similar to that of Hydroptila dorsoprocessuata Botosaneanu 1993, known in eastern Russia, in having a long dorsal process on segment IX, an elongate-rectangular semi-membranous dorsal plate, and long triangular inferior appendages. However, H. nago is clearly discriminated from H. dorsoprocessuata as follows: The aedeagus is bifurcate in H. nago but single in H. dorsoprocessuata; and in lateral view, the subgenital plate is extended caudad to near the tip of the inferior appendages in H. nago, but is relatively short, reaching only to the middle of the inferior appendages in H. dorsoprocessuata.	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF915317FF49FF41AD1B5AEE.taxon	description	Description. Male. Wings brown in alcohol. Forewings each 1.6 – 1.9 mm long, hind wings each 1.2 – 1.3 mm long (n = 2). Antennae brown, 1.2 – 1.3 mm long, 21 – 23 - segmented (n = 2). Short ventromesal process on abdominal segment VII. Male genitalia (Figs 1 A – 1 E). Segment IX moderately long with anterior margin produced into long dorsal process (d. pr.) at middle of posterior margin in lateral and dorsal views. Dorsal plate (d. pl.) mostly membranous, elongate-rectangular with shallow middle apical excavation in dorsal view. Subgenital plate (s. pl.) subrectangular in basal half in ventral view, abruptly produced distally in long bar with apical seta. Inferior appendages (i. a.) long without any lobes, rod-like in lateral view, long-triangular in ventral view. Phallic apparatus with short titillator (ti.) at basal 1 / 3, aedeagus (ae.) and sclerotized sclerotized extension of ejaculatory duct (ej. du.) directed caudad, almost straight; aedeagus bifurcate, each half acute apically. Female. Unknown.	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF915317FF49FF41AD1B5AEE.taxon	materials_examined	Holotype. Male, Japan, Ryukyu, Okinawa-jima, Nago-shi, Genka, Genka-gawa, Hogen-hashi (26.6292 N, 128.0847 E, 90 m above sea level, 8. iv. 2011, T. Ito, light trap (CBM-ZI 167018). Paratype. 1 male, type locality, 17 – 19. x. 2014, T. Ito, light pan trap (CBM-ZI 167019).	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF915317FF49FF41AD1B5AEE.taxon	etymology	Etymology. The name “ nago ” is a noun in apposition, coined from the type locality.	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF915317FF49FF41AD1B5AEE.taxon	distribution	Distribution. Japan (Ryukyu: Okinawa-jima).	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF915317FF49FF41AD1B5AEE.taxon	discussion	Remarks. The adults of this species were collected near fast-flowing rivers with stony substrates. Japanese name. Nago-hime-tobikera.	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF965310FF49FDCCADDB5BD4.taxon	description	(Fig. 4)	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF965310FF49FDCCADDB5BD4.taxon	description	Genitalia (Figs 4 A – 4 D). Segment IX with strongly produced anterolateral margins, reaching up to middle of abdominal segment VII, small rounded mid-dorsal process (d. pr.) on posterior margin. Dorsal plate (d. pl.) mostly membranous, elongate with large, subcircular concavity apicomesally in dorsal view. Subgenital plate (s. pl.) broadly triangular in ventral view. Inferior appendages (i. a.) elongate-triangular, apices curved laterodorsad. Aedeagus slender and slightly curved ventrad apically with titillator at basal 2 / 5, subapical process absent. Female. Unknown. Specimens examined. Japan, Honshu, Kyoto: 1 male, Uji-shi, Makishima-cho, Uji-gawa, Ingen-bashi, 24. vi. 2012, S. Kobayashi. Shiga: 1 male, Otsu-shi, Oishi-higashi, Seta-gawa, Shishitobi-bashi, 16. vii. 2014, S. Kobayashi.	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF965310FF49FDCCADDB5BD4.taxon	distribution	Distribution. China (Anhui, Fujian, Sichuan), Japan (Honshu).	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF965310FF49FDCCADDB5BD4.taxon	discussion	Remarks. The male of this species is somewhat similar to that of the widely distributed Japanese species, H. oguranis, in having a broadly triangular subgenital plate and almost straight phallic apparatus, but differs from the latter as follows: The dorsal plate has a large round excavation apically in H. parapiculata, but a shallow excavation apically in H. oguranis; the phallic apparatus is slender and simple apically in H. parapiculata, but bifurcate apically in H. oguranis. Japanese name. Nise-ogura-hime-tobikera.	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF99531DFF49FB70AE205A3F.taxon	description	(Fig. 6)	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF99531DFF49FB70AE205A3F.taxon	description	Head (Figs 6 B – 6 E). Subquadrate, sutures indistinct, width up to 0.28 mm, ratio of length to width about 1.1. Antennae near anterolateral corners, each with long apical seta. Setae 9 longest, about 1.5 times head width. Labrum symmetrical. Mandibles robust, each with 4 blunt teeth, mesal brush indistinct. Thorax (Figs 6 F – 6 I). Dorsum of each segment covered by pair of large square thoracic nota; small round concavity at basal 1 / 4 of mesal edge of mesonotum, pair of concavities appearing as tiny hole; number of setae on each side about 30 on pronotum (~ 18 anteriorly, ~ 12 across middle), about 25 on each of meso- and metanota (~ 16 anteriorly, ~ 8 across middle). Prosternum with pair of transversely long sclerites near posterior margin and pair of small round sclerites at posterolateral corners; transversely elongate sclerites gradually broadened laterally, each with small cleft in lateral margin. Mesosternum with pair of short wide sclerites near posterior margin, sometimes indistinct. Thoracic legs all robust, similar in length and form; basal seta of each tarsal claw slightly curved, subacute apically. Foretrochantin with subtriangular anterior and posterior halves. Pleura of meso- and metathoracic segments subrectangular, each slightly curved with small convexity at apical 1 / 3 of dorsal margin, pleural sutures indistinct. Abdomen (Figs 6 L – 6 M). Moderately depressed (flattened dorsoventrally), middle of abdomen swollen. Tracheal gills, humps, lateral fringes, or lateral tubercles absent. Subquadrate tergite and pair of setae on each of segments I – VII; tergites dark brown at anterior 2 / 3 – 3 / 4 and light brown at posterior 1 / 3 – 1 / 4; tergites of segments II – VII each with median small round area of chloride epithelia (dorsal ring of Marshall 1979; chloride epithelia? of Botosaneanu & Levanidova 1988); tergite VIII large, subquadrate with spinose posterior margin; tergite IX large, semicircular, posterior edge with regular ‘ crenellations’ (modified flattened setae of Marshall 1979) or ‘ crenels’ (Botosaneanu & Levanidova 1988) medially and spines laterally. On segment X, lateral sclerites rectangular; paired anal legs strongly curved anterolaterad, anal claws without any accessory hooks. Case (Figs 6 N, 6 O). Composed of ventral and dorsal valves; ventral valve forming almost flat sheet; dorsal valve forming convex dome carried tortoise-like, slightly larger than ventral valve; anterior and posterior hoods scarcely developed; made of silk together with few mineral particles especially at each end of dorsal valves. Habitat and feeding. Larvae and pupae were found in the hygropetric zone. Gut contents comprised somewhat amorphous particles. The gut contents together with the robust mandibles with blunt teeth (Fig. 6 D) suggest the larvae are scrapers adapted to stony substrata. Specimens examined. Japan, Kyushu: Nagasaki: 3 males, 4 females, 2 pupae (male, female), 6 larvae, Sasebo-shi, Maehata-cho, 17. v. 2017, N. Shimura; 4 larvae, same locality, 26. vii. 2017, N. Shimura; 1 pupa (female), 24 larvae, same locality, 4. x. 2017, N. Shimura.	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF99531DFF49FB70AE205A3F.taxon	distribution	Distribution. Japan (Hokkaido, Honshu, Kyushu). New to Kyushu.	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
03EC7639FF99531DFF49FB70AE205A3F.taxon	discussion	Remarks. The larvae of the genus Stactobia are unique in the family Hydroptilidae in having a pair of transversely rectangular dorsal sclerites on each of segments I – VII and large dorsal sclerites on each of segments VIII and IX (Waringer & Graf 2011; Figs 6 A, 6 L, 6 M). The larvae of this species are distinguished from other congeneric Japanese species by the arrangement of the ventral sclerites of the thoracic sterna: A pair of transversely wide, submesal, subtriangular sclerites posteriorly and a pair of small round ones at the posterolateral corners on the prosternum, and a pair of transversely wide, linear, submesal sclerites posteriorly on the mesosternum (Fig. 6 G). The case is slightly depressed dorsoventrally, broader medially, with very small anterior and posterior hoods, and made of silk with a few minerals dorsally (Figs 6 N, 6 O). These character states of cases are common to those of Japanese species of the S. nielseni Species Group: S. chichibu Ito 2017, S. campire Ito 2017, and S. urauchi Ito 2017 (Ito 2017).	en	Ito, Tomiko, Shimura, Noriyoshi (2019): Notes on six microcaddisfly species (Trichoptera: Hydroptilidae) recorded for Japan, one a newly described species. Zootaxa 4629 (1): 26-38, DOI: 10.11646/zootaxa.4629.1.2
