Dicranota ( Rhaphidolabis ) minuscula Alexander, 1938

Dicranota ( Rhaphidolabis) minuscula Alexander, 1938 View in CoL

Figs 49–52 View Figures 49–52 , 87 View Figures 77–93

Dicranota ( Rhaphidolabis) flavibasis minuscula Alexander, 1938 b: 151; Savchenko and Krivolutskaya 1976: 42–43; Savchenko 1983: 44–45; Savchenko 1989: 28. View in CoL

Dicranota ( Rhaphidolabis) minuscula View in CoL : Oosterbroek 2025.

Type material examined.

North Korea • Holotype (as Dicranota ( Rhaphidolabis) flavibasis minuscula ) ♂ (antenna, hind leg, wing and genitalia slide mounted); Ompo ; alt. 244 m; 22 September 1937; A. M. Yankovsky leg.; USNM .

Other examined material

(Fig. 87 View Figures 77–93 ). North Korea • 1 ♀ (pinned); Ompo ; alt. 76 m; 7 May 1938; A. M. Yankovsky leg.; USNM • 1 ♀ (pinned); Chonsani ; alt. 1067 m; 29 June 1940; A. M. Yankovsky leg.; USNM • 1 ♀ (pinned); Chonsani ; alt. 1219 m; 29 June 1940; A. M. Yankovsky leg.; USNM • 1 ♀ (pinned); Chonsani ; alt. 1219 m; 4 July 1940; A. M. Yankovsky leg.; USNM • 1 ♀ (pinned); Chonsani ; alt. 1372 m; 7 July 1940; A. M. Yankovsky leg.; USNM • 2 ♀ (pinned, ovipositor of 1 ♀ in microvial with glycerol on same pin); Pontani Paiktusan ; alt. 1829 m; 2 August 1940; A. M. Yankovsky leg.; USNM • 1 ♀ (pinned); Pontani Paiktusan ; alt. 1676–1890 m; 4 August 1940; A. M. Yankovsky leg.; USNM • 2 ♀ (pinned); Pontani Paiktusan ; alt. 1768–1942 m; 8 August 1940; A. M. Yankovsky leg.; USNM • 1 ♀ (pinned); Pontani Paiktusan ; alt. 1920 m; 8 August 1940; A. M. Yankovsky leg.; USNM • 1 ♀ (pinned); Pontani Paiktusan ; alt. 1768 m; 13 August 1940; A. M. Yankovsky leg.; USNM • 3 ♀ (pinned); Pontani Paiktusan ; alt. 1920 m; 20 August 1940; A. M. Yankovsky leg.; USNM • 2 ♀ (pinned); Pontani Paiktusan ; alt. (1829?) – 1942 m; 23 August 1940; A. M. Yankovsky leg.; USNM • 1 ♀ (pinned); Pontani Paiktusan ; alt. 1829–1942 m; 25 August 1940; A. M. Yankovsky leg.; USNM ; South Korea • 1 ♂, 1 ♀ (in ethanol); Jeollanam-do, Gurye-gun, Toji-myeon, Naeseo-ri , Piagol valley ; 35.26586°N, 127.58090°E; alt. 448 m; 27 April 2012 (2); S. Podenas leg.; NIBR GoogleMaps • 3 ♂, 1 ♀ (in ethanol); Gyeongsangnam-do province, Samjeong village ; 35.30246°N, 127.63439°E; alt. 640 m; 28 April 2012; S. Podenas leg.; NIBR GoogleMaps • 3 ♂ (pinned, genitalia in microvials with glycerol on same pins); Jeollabuk-do, Namwon, Sannae-myeon, Deokdong-ri ; 35.33629°N, 127.53230°E; alt. 727 m; 7 May 2013 (5); S. Podenas leg.; NIBR GoogleMaps • 1 ♀ (pinned); Jeollanam-do, Gurye-gun, Masan-myeon, Hwangjeon-ri ; 35.24366°N, 127.48964°E; alt. 101 m; 8 May 2013 (1); S. Podenas leg.; NIBR GoogleMaps • 1 ♀ (pinned); Gyeongsangnam-do, Hadong-gun, Hwagae-myeon, Beomwang-ri ; 35.27655°N, 127.61796°E; alt. 364 m; 8 May 2013 (3); S. Podenas leg.; NIBR GoogleMaps • 1 ♂ (pinned, genitalia in microvial with glycerol on same pin); Gyeongsangnam-do, Sancheong, Sicheon-myeon, Jungsan-ri ; 35.30996°N, 127.75163°E; alt. 709 m; 9 May 2013 (1); S. Podenas leg.; NIBR GoogleMaps • 1 ♀ (pinned); Jeollanam-do, Gurye-gun, Toji-myeon, Naeseo-ri , Piagol valley ; 35.26580°N, 127.58128°E; alt. 378 m; 10 May 2013; S. Podenas leg.; NIBR GoogleMaps • 1 ♀ (pinned), 1 ♂, 1 ♀ (in ethanol); Gyeongsangnam-do, Hamyang, Macheon-myeon, Samjeong-ri ; 35.34243°N, 127.64102°E; alt. 705 m; 11 May 2013 (4); S. Podenas leg.; NIBR GoogleMaps • 1 ♂, 1 ♀ (pinned, male genitalia in microvial with glycerol on same pin); Jeollanam-do, Gurye-gun, Toji-myeon, Naeseo-ri , Piagol valley ; 35.27177°N, 127.57146°E; alt. 490 m; 24 April 2015 (4); S. Podenas leg.; NIBR GoogleMaps • 1 ♂ (in ethanol); Jeollanam-do, Gurye-gun, Toji-myeon, Naeseo-ri , Piagol valley ; 35.26590°N, 127.58096°E; alt. 446 m; 25 April 2015 (2); S. Podenas leg.; NIBR GoogleMaps • 1 ♂, 1 ♀ (pinned, male genitalia in microvial with glycerol on same pin); Jeollanam-do, Gurye-gun, Toji-myeon, Naeseo-ri , Piagol valley ; 35.26590°N, 127.58096°E; alt. 446 m; 26 April 2015 (1); S. Podenas leg.; NIBR GoogleMaps • 1 ♀ (pinned); Jeollanam-do, Gurye-gun, Toji-myeon, Naeseo-ri , Piagol valley ; 35.25825°N, 127.58208°E; alt. 310 m; 26 April 2015 (2); S. Podenas leg.; NIBR GoogleMaps • 2 ♀ (pinned); Jeollanam-do, Gurye-gun, Toji-myeon, Naeseo-ri , Piagol valley ; 35.26590°N, 127.58096°E; alt. 446 m; 27 April 2015 (1); S. Podenas leg.; NIBR GoogleMaps • 1 ♂, 6 ♀ (pinned, male genitalia in microvial with glycerol on same pin); Jeollanam-do, Gurye-gun, Toji-myeon, Naeseo-ri , Piagol valley ; 35.27177°N, 127.57146°E; alt. 490 m; 27 April 2015 (2); S. Podenas leg.; NIBR GoogleMaps • 3 ♀ (in ethanol); Jeollanam-do, Gurye-gun, Toji-myeon, Naeseo-ri , Piagol valley ; 35.28589°N, 127.55605°E; alt. 773 m; 30 April 2015 (1); S. Podenas leg.; NIBR GoogleMaps • 3 ♀ (in ethanol); Jeollanam-do, Gurye-gun, Toji-myeon, Naeseo-ri , Piagol valley ; 35.27448°N, 127.56378°E; alt. 593 m; 1 May 2015 (1); S. Podenas leg.; NIBR GoogleMaps • 1 ♂, 1 ♀ (in ethanol); Gangwon-do, Gapyeong-gun, Buk-myeon , Jeokmok-ri ; 37.97627°N, 127.44160°E; 27 September 2015; Y. Bae leg.; KUEM GoogleMaps • 1 ♀ (pinned); Gangwon-do, Chuncheon-si, Namsan-myeon , Gongchon-ri ; 37.81159°N, 127.64919°E; alt. 131 m; 7 October 2018 (2); S. Podenas leg.; NIBR GoogleMaps • 16 ♀ (in ethanol); Gangwon-do, Chuncheon-si, Dongsan-myeon , Kangwon National University Experimental Forest ; 37.77909°N, 127.81580°E; alt. 225 m; 9 October 2018; S. Podenas leg.; at light and with net; NIBR GoogleMaps • 3 ♀ (pinned); Doiryung Valley, Bukhansan National Park ; 37.69037°N, 126.98972°E; alt. 242 m; 16 October 2018 (2); H. - Y. Seo, S. Podenas leg.; NIBR GoogleMaps • 1 ♀ (pinned, wings slide mounted); Gyeonggi-do, Yangju-si, Jangheung-myeon, Uldae-ri ; 37.74258°, 127.00329°E; alt. 162 m; 19 October 2018; A. Petrasiunas leg.; stream margin; NRC .

Redescription.

General body colouration greyish dark brown with denser grey pruinosity covering thorax. Body length of male ~ 6.5 mm, of female 6.2–8.8 mm. Wing length of male 7.2 mm, of female 6.3–8.3 mm.

Head. Pale brownish grey because of dense pruinosity, ground colour dark brown. Ground colour more distinct in old specimens. Indistinct darker stripe or narrow line extends medially. Area along eye margin light grey. Sparse, brownish, semi-erect setae cover dorsal area. Eyes widely separated, distance between them at base of antennae approximately equals length of both basal antennomeres taken together. Vertex with distinct rounded tubercle. Antenna dark brown, short, reaching to approx. frontal margin of prescutum, if bent backwards, 0.6 mm long in male, 0.8 mm in female. Scape elongate, nearly cylindrical, ~ 2 × as long as pear-shaped pedicel. Flagellum 12 - segmented, basal flagellomere short, barrel-shaped, approximately as long as wide, remaining flagellomeres oval, covered with short light pubescence (Fig. 49 View Figures 49–52 ). Apical flagellomere large, 1.7 × as long as preceding segment. Longest verticils ~ 0.5 × as long as respective flagellomeres. Rostrum dark brown, covered with dense light grey pruinosity. Palpus short, dark brown, covered with sparse dark erect setae. Labellum brown.

Thorax. Generally light grey because of dense pruinosity that covers dark brown surface, dorsum brownish grey. Presutural scutum pale brownish grey with three distinct dark brown stripes. Medial stripe not reaching suture caudally, with interrupted pale longitudinal vitta along middle, more distinct posteriorly. Lateral stripe reaches pseudosutural fovea frontally and suture caudally. Scutal lobe lead grey with dark brown central area reaching lateral scutal stripe frontally. Area between scutal lobes pale grey with dark brown frontal margin. Scutellum pale grey with few erect yellowish setae. Mediotergite bluish grey. Pleuron pale grey, bluish dorsally, brownish ventrally. Wing (Fig. 50 View Figures 49–52 ) long and narrow both in male and female, slightly> 4 × as long as wide, subhyaline, milky, with yellowish base and costal area, iridescent, without darker pattern, except indistinct pale brown stigma. Veins brown, yellowish at wing base. Venation: Sc long, reaching far beyond branching point of R 2 + 3 + 4, nearly to the proximal margin of stigma. Cross-vein sc-r closer to base of Rs than to humeral vein. Rs 2.6 × as long as m-cu, arched. Free end of R 1 short, distinctly shorter than R 2. Vein R 2 oblique. Distal portions of R 3, R 4, and R 5 straight and parallel to each other. Stem of cell r 3 long, longer than m-cu. Discal cell missing due to reduction of m-m. Cell m 1 short, its stem 2 × as long as cell itself. Cross-vein m-cu nearly its own length beyond branching point of M. Vein CuP slightly sinuous, A 1 slightly arched at distal part. Anal angle large, widely rounded. Halter brown with darker brown knob. Length of male halter 0.8 mm, of female 0.9–1.0 mm. Coxae grey, just fore coxa brownish postero-ventrally. Trochanters yellowish brown. Femora pale brown, slightly more infuscate towards distal end. Tibiae and basal tarsomeres pale brown, distal tarsomeres brown. Male femur I: 4.8 mm long, II: 5.6 mm, III: 5.3 mm, tibia I: 5.6 mm, II: 5.3 mm, III: 5.3 mm, tarsus I: 7.0 mm, II: 5.8 mm, III: 8.1 mm. Female femur I: 4.4–5.1 mm long, II: 4.6–5.4 mm, III: 4.3–5.5 mm, tibia I: 4.2–5.0 mm, II: 4.1–4.8 mm, III: 4.0– 5.2 mm, tarsus I: 4.9–6.0 mm, II: 4.5–5.4 mm, III: 3.9–5.2 mm. Claw pale brown, without spines or teeth, basal half widened, distal narrow.

Abdomen. Tergites rusty brown, sternites somewhat paler, both covered with sparse yellowish setae. Pregenital segments dark brown. Membrane between tergites and sternites obscure yellow. Male terminalia (Fig. 51 View Figures 49–52 ) yellow. Posterior margin of epandrium with deep and wide emargination, lateral lobe rounded, densely covered with long setae. Gonocoxite short and stout, simple, without additional lobes. Interbase wide at base, distal portion narrow and strongly arched. Outer gonostylus elongate, nearly parallel-sided, plate-shaped, distal portion covered with dense blackish spinulae, apex rounded. Inner gonostylus nearly as long as outer gonostylus, but narrower, mesal surface with few small spines apically. Aedeagus straight and narrow, extending beyond caudal end of paramere. Ovipositor (Fig. 52 View Figures 49–52 ) brownish yellow with pale tips of cercus and hypogynial valve. Cercus arched with tip raised upwards, hypogynial valve straight.

Elevation range.

From circa 100 m to nearly 2000 m.

Period of activity.

Adults fly from late April through to late October. Probably two generations a year.

Habitat.

Wet sparse alder grooves in South Kuriles ( Savchenko and Krivolutskaya 1976), Chosenia and Alnus grooves on margins of deep pits permanently filled with water in river valleys in south Primorye ( Savchenko 1983). Semi-natural margins of streams densely covered with shrubs near small villages; margins of small fast-running rocky streams surrounded by mixed forests, with moss densely covering rock surfaces and some sandy bottom areas in South Korea.

General distribution.

Korean Peninsula and Far East of Russia.

Remark.

This species is recorded from South Korea for the first time.