Ormosia (Oreophila) sootryeni Lackschewitz, 1935

Kato, Daichi, Watanabe, Kozo & Kolcsar, Levente-Peter, 2022, Japanese species of Ormosia Rondani (Diptera, Limoniidae): revision of the subgenera Oreophila Lackschewitz and Parormosia Alexander, ZooKeys 1132, pp. 127-162 : 127

publication ID	https://dx.doi.org/10.3897/zookeys.1132.86022
publication LSID	lsid:zoobank.org:pub:46E68453-A2FA-4D22-A0D7-4509DFFB7C1B
persistent identifier	https://treatment.plazi.org/id/D1945007-2DF4-56BD-BD5F-E42B782F6610
treatment provided by	ZooKeys by Pensoft
scientific name	Ormosia (Oreophila) sootryeni Lackschewitz, 1935
status

Treatment

Figs 5B View Figure 5 , 8A View Figure 8 , 9 View Figure 9 , 10 View Figure 10 , 11 View Figure 11

Oreophila sootryeni in Lackschewitz 1935: 8: original description (type locality: Norway, Røsvik).

Ormosia (Ormosia) ducalis in Alexander 1938: 162: original description (type locality: North Korea, Ompo).

Ormosia ducalis in Alexander 1970: 77: faunistic record.

Ormosia (Oreophila) sootryeni in Savchenko 1983: 82: faunistic records, comparison; Nakamura 2014: 32: distribution; Oosterbroek 2022: distribution.

Type material examined.

Ormosia (Oreophila) ducalis Alexander, 1938: Holotype • North Korea, ♂, Ompo; alt. 170 feet; 23 May 1937; A. Yankovsky leg.; USNM.

Non-type material examined.

Ormosia ducalis Alexander, 1938: Japan • 1 ♂, Hida, On-take; 15 Jul. 1958, Mishima leg.; USNM. North Korea • 1♂; Ompo; alt. 100 feet; 19 May 1938; A. Yankovsky leg.; USNM.

Ormosia (Oreophila) sootryeni Lackschewitz, 1935: Japan • 3 ♂, 1 ♀; Honshu, Aomori, Nishimeya-mura, Kawaratai, Ôkawa-rindô Path; 40.50062°N, 140.20405°E; alt. 300 m; 30 May 2014; • 2 ♂; same locality; 3 Jun. 2014; D. Kato leg.; BLKU. • 1 ♂; Honshu, Aomori, Towada-shi, Okuse, Tsutanuma-rindô Path; 40.590842°N, 140.957052°E; alt. 460 m; 5 Jul. 2014; • 1 ♂; same locality; 30 Aug. 2014; • 1 ♂; same locality; 30 Sep. 2014; D. Kato leg.; BLKU. • 1 ♀; Honshu, Nagano, Sakae-mura, Sakai, Koakazawa-gawa River; 36.85352°N, 138.66358°E; alt. 1310-1500 m; 23 Jul. 2019; • 1 ♂; same locality; 19 Sep. 2019; D. Kato leg.; BLKU.

Diagnosis.

General coloration brownish black (Fig. 8A View Figure 8 ). Vertex often brownish grey. Antenna dark brown. Wing blackish tinged, stigmal region weakly dark. Halter yellow at base and knob. Legs entirely brownish black. Male terminalia: tergite 9 bearing of three small triangular lobes at caudal margin. Gonocoxite slightly produced beyond base of clasper of gonostylus. Clasper of gonostylus divided into two long arms, dorsal arm almost straight, strongly narrow and bent outward at tip, ventral arm slightly longer than dorsal arm, apical part strongly widened and rounded. Interbase with mesal-apical lobe long blade-shaped, curved at extreme tip, basal part of each interbase fused with each other. Female terminalia with cercus stout, strongly upcurved. Hypogynial valve rounded at tip. Genital frame with lateral arm of genital fork roundish, situated at posterior end of genital fork. Sternite 9 slender, arched bridge-shaped.

Redescription.

Male. Body length 3.8-5.9 mm, wing length 5.7-7.8 mm.

Head: covered with black setae. Vertex brownish black, brownish grey by pruinosity from certain angles. Eyes relatively large and widely separated, ~ 4/5 as wide as narrowest point of vertex, ~ 1/2 length of head including rostrum in dorsal view. Rostrum dark brown, ~ 1/3 length of eye in lateral view. Palpus dark brown, 5-segmented, 3/4 length of head, palpomere 1 globular and small, palpomeres 2, 4, and 5 cylindrical, palpomere 3 oval. Labellum dark brown. Antenna dark brown, ~ 3 × as long as head, 16-segmented; scape 2 × as long as wide; pedicel oval, 1/2 length of scape; flagellomeres bacilliform, gradually slender toward apical segment; each flagellomere with ca. eight verticils, longest one except in apical segment ~ 2.5 × as long as each segment.

Thorax: covered with black setae on dorsal part and partly with yellow setae on pleuron, coxae, and trochanters. Antepronotum brownish black; postpronotum dusky yellow. Mesonotum subnitidous, brownish black, greyish ochreous by pruinosity from certain angles, weakly yellowish around humeral part. Prescutal pit black, long oval to long bacilliform. Tuberculate pit absent. Pleuron dark brown, slightly variegated with lighter brown. Wing (Fig. 9 View Figure 9 ) tinged with black, stigmal region weakly dark; 3.3-3.5 × as long as wide; Sc ending between level of R2 and fork of R2+3+4; crossvein sc-r distinct, situated between levels of basal 1/7-1/4 of Rs; R2+3+4 1/10 length of R3 or shorter; R2 situated 1-2 × length of itself distal to fork of R2+3+4; M4 2-4 × as long as M3+4; wing margin between tips of CuP and A1 2-3 × as long as that between tips of CuP and CuA; A1 almost straight. Halter dark brown, base and knob yellow, ~ 2/3 length of thorax. Legs brownish black (Fig. 8A View Figure 8 ).

Abdomen (Fig. 8A View Figure 8 ): brownish black, densely covered with black setae mainly on dorsal part and with yellow setae mainly on lateral and ventral parts.

Male terminalia (Fig. 10 View Figure 10 ): Tergite 9 with three small triangular lobes at caudal margin, middle one 2 × longer as lateral one; lateral one 1/4 length of middle of tergite 9 including middle lobe; anterior margin of tergite 9 widely notched; tergite 9 approximately 3 × wider than long including caudal lobe (Fig. 10A View Figure 10 ). Sternite 9 widely concave at middle of posterior margin (Fig. 10B View Figure 10 ). Gonocoxite stout, 2 × as long as tergite 9, posteroventral margin weakly and roundly produced beyond base of clasper of gonostylus, produced part less than 1/10 length of clasper of gonostylus (Fig. 10A View Figure 10 ). Gonocoxal apodeme short, connected to anterolateral part of interbase (Fig. 10D View Figure 10 ). Clasper of gonostylus dark and smooth on surface, divided into two arms; dorsal arm roughly rod-shaped, almost straight in apical view, slightly shorter than gonocoxite, tip pointed, suddenly narrow and bent outward, claw-like in dorsal view; ventral arm slightly longer than gonocoxite, weakly sinuous, apical part strongly widened and rounded (Fig. 10C View Figure 10 ). Lobe of gonostylus slightly shorter than gonocoxite, flattened, gradually narrow and curved dorsally toward tip, rounded at tip, middle part 2 × as wide as middle part of dorsal arm of clasper of gonostylus (Fig. 10C View Figure 10 ). Interbases with mesal-apical lobe long blade-shaped, gradually narrow distally, directed posterodorsally, curved at extreme tip, basal part fused with each other, anterolateral part roundly produced laterally (Fig. 10D View Figure 10 ). Paramere wide, roughly triangular, ca. as long as interbase (Fig. 10D View Figure 10 ). Aedeagus relatively flat, distinctly broad at tip in dorsal view (Fig. 10D View Figure 10 ), apical part ~ 1/3 width of basal part of interbase, tip slightly beyond furcation point of interbase (Fig. 10D View Figure 10 ), with short extension of aedeagal sheath directed ventrally (Fig. 10E View Figure 10 ). Sperm pump roundish in dorsal view, anterior end situated at level of anterior end of paramere (Fig. 10D View Figure 10 ). Ejaculatory apodeme developed, laterally compressed, fin-like plate, ~ 1/3 length of diameter of sperm pump (Fig. 10E View Figure 10 ).

Female. Body length 6.0-6.4 mm, wing length 7.4-8.1 mm. Generally resembling male.

Female terminalia (Fig. 11 View Figure 11 ): brownish black, distal part of tergite 10 yellowish; cercus amber-colored, basal 1/2 dark; hypogynial valve dusky yellow, base of lateral part brownish. Tergites 8 and 9 fused. Cercus stout, strongly upcurved, slightly shorter than tergite 10; hypogynial valve ca. as long as sternite 8, finger-shaped in lateral view, rounded at tip, basal part ca. as wide as that of cercus, tip ending near level of middle of cercus (Fig. 11A View Figure 11 ). Genital frame with genital fork cross-shaped, extended laterally at posterior 1/4, weakly constricted medially, anterolateral corner of lateral extension pointed; lateral arm of genital fork roughly roundish, situated at posterior of genital fork; sternite 9 slender, arched bridge-shaped, arising from posterolateral corner of genital fork, middle part with small lobe (Fig. 11B View Figure 11 ). Two spermathecal ducts present, spermathecae indistinct.

Distribution.

Japan (Honshu) (Fig. 5B View Figure 5 ), North Korea, Russia (FE), Kuril Islands, Kazakhstan (east), Finland, Norway, and Sweden.

Remarks.

This species is similar to a Chinese species, Ormosia (Oreophila) subducalis Alexander, 1940 ( Alexander 1940b), but is differentiated from it by the following characters: wing entirely blackish tinged (brownish yellow with clearer yellow base in Ormosia (Oreophila) subducalis ); halter dark brown, base and knob yellow (orange yellow in Ormosia (Oreophila) subducalis ).