Dicranota ( Rhaphidolabis ) ompoana Alexander, 1945

Dicranota ( Rhaphidolabis) ompoana Alexander, 1945 View in CoL

Figs 58–61 View Figures 58–61 , 89 View Figures 77–93

Dicranota ( Rhaphidolabis) ompoana Alexander, 1945: 246. View in CoL

Type material examined.

North Korea • Holotype ♂ (both antennae, fore leg, wing and abdomen slide mounted); Ompo ; alt. 213 m; 8 May 1938; A. M. Yankovsky leg.; USNM .

Other examined material

(Fig. 89 View Figures 77–93 ). North Korea • 3 ♀ (pinned); Ompo ; alt. 76 m; 7 May 1938; A. M. Yankovsky leg.; USNM • 3 ♀ (pinned); Ompo ; alt. 91 m; 8 May 1938; A. M. Yankovsky leg.; USNM • 2 ♀ (pinned); Ompo ; alt. 91 m; 9 May 1938; A. M. Yankovsky leg.; USNM • 4 ♀ (pinned); Ompo ; alt. 61 m; 12 May 1938; A. M. Yankovsky leg.; USNM • 1 ♀ (pinned); Ompo ; alt. 61 m; 28 May 1938; A. M. Yankovsky leg.; USNM • 1 ♀ (pinned); Ompo ; alt. 122 m; 3 June 1938; A. M. Yankovsky leg.; USNM • 2 ♀ (pinned); Chonsani ; alt. 1524 m; 4 July 1940; A. M. Yankovsky leg.; USNM • 3 ♀ (pinned); Chonsani ; alt. 1372 m; 6 July 1940; A. M. Yankovsky leg.; USNM • 1 ♂ (pinned, broken genitalia in microvial with glycerol on same pin); Pontani Paiktusan ; alt. 1905 m; 26 July 1940; A. M. Yankovsky leg.; USNM • 2 ♀ (pinned); Pontani Paiktusan ; alt. 1219 m; 29 July 1940; A. M. Yankovsky leg.; USNM • 2 ♂ (pinned, genitalia in microvials with glycerol on same pins); Pontani Paiktusan ; alt. 1676 m; 31 July 1940; A. M. Yankovsky leg.; USNM • 1 ♀ (pinned); Pontani Paiktusan ; alt. 1676–1890 m; 4 August 1940; A. M. Yankovsky leg.; USNM • 1 ♂ (pinned, genitalia in microvial with glycerol on same pin); Pontani Paiktusan ; alt. 1676 m; 5 August 1940; A. M. Yankovsky leg.; USNM • 1 ♂ (pinned, genitalia in microvial with glycerol on same pin); Pontani Paiktusan ; alt. 1890 m; 6 August 1940; A. M. Yankovsky leg.; USNM • 1 ♀ (pinned, ovipositor in microvial with glycerol on same pin); Pontani Paiktusan ; alt. 1920 m; 8 August 1940; A. M. Yankovsky leg.; USNM • 1 ♀ (pinned); Pontani Paiktusan ; alt. 1859 m; 9 August 1940; A. M. Yankovsky leg.; USNM • 1 ♀ (pinned); Pontani Paiktusan ; alt. 1859 m; 10 August 1940; A. M. Yankovsky leg.; USNM • 1 ♀ (pinned); Pontani Paiktusan ; alt. 1768 m; 13 August 1940; A. M. Yankovsky leg.; USNM • 2 ♀ (pinned); Pontani Paiktusan ; alt. 1829 m; 17 August 1940; A. M. Yankovsky leg.; USNM • 1 ♀ (pinned); Pontani Paiktusan ; alt. 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 ♀ (pinned); Kwangju [ Gwangju]; 27 April 1946; S. Kramer leg.; USNM ; • 1 ♂ (pinned, genitalia in microvial with glycerol on same pin); Jeollabuk-do, Namwon, Unbong-eup, Hwasu-ri ; 35.45345°N, 127.57759°E; alt. 509 m; 6 May 2013 (1); S. Podenas, H. Byun leg.; NIBR GoogleMaps • 1 ♀ (pinned); Jeollabuk-do, Namwon, Jucheon-myeon, Gogi-ri ; 35.38131°N, 127.48412°E; alt. 450 m; 7 May 2013 (2); S. Podenas, H. Byun 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 ♀ (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; NIBR GoogleMaps • 1 ♂ (in ethanol); Gyeonggi-do, Yongpyeong-gun, Cheongun-myeon, Dowon-ri , Dowon Valley ; 37.54514°N, 127.79449°E; alt. 213 m; 10 October 2018 (1); S. Podenas leg.; NIBR GoogleMaps .

Redescription.

General body colouration grey. Body length of male ~ 6.0 mm, of female 5.1–7.6 mm. Wing length of male 5.3–7.0 mm, of female 6.4–9.2 mm.

Head. Black, densely covered with grey pruinosity and sparse semi-erect yellowish setae. Eyes widely separated, distance between them at base of antennae slightly exceeds length of scape. Vertex with distinct tubercle, covered with yellowish grey pruinosity, top blackish. Antenna (Fig. 58 View Figures 58–61 ) short, 0.5–0.7 mm long in male, 0.6 mm in female. Scape elongate, subcylindrical, ~ 1.5 × as long as pedicel, dark brown, covered with sparse greyish pruinosity and bearing few erect setae on dorsal surface. Pedicel wider distally, blackish, covered with few short dark setae. Flagellum black, 11 - segmented, flagellomeres elongate, oval, basal flagellomere 1.5 × as long as succeeding segment. Apical flagellomere relatively large, 0.9 × as long as preceding segment. Longest verticils 0.7 × as long as respective flagellomeres. Rostrum dark brown to black. Palpus black. Labellum large, obscure yellow with narrowly darkened margins.

Thorax. Pronotum grey laterally, greyish brown dorsally. Presutural scutum obscure brownish to bluish grey with three distinct dark brown stripes. Medial stripe without paler line along middle, or with very indistinct line posteriorly, darker frontally, less distinct caudally, not reaching suture. Lateral stripe short, nearly reaches pseudosutural fovea frontally and suture caudally, more distinct frontally, fading caudally. Scutal lobe with diffuse darker area extending lateral scutal stripe. Area between scutal lobes pale yellowish, greyish brown, colour varies depending on angle of light. Scutellum and mediotergite pale grey. Pleuron grey with darkened ventral area of katepisternum and meron. Dorsopleural membrane obscure yellow. Wing (Fig. 59 View Figures 58–61 ) long and narrow, 4 × as long as wide, subhyaline, milky, with yellowish base, iridescent, without darker pattern, except indistinct pale brown stigma. Veins pale greyish brown, yellowish at wing base. Venation: Sc long, reaching beyond level of cell m 3 base, to approx. proximal margin of stigma. Cross-vein sc-r closer to base of Rs than to humeral vein. Rs 1.6 × as long as m-cu, arched. Free end of R 1 very short, much shorter than R 2. Vein R 2 oblique. Wing cell r 2 without supernumerary cross-vein, but one female from Ompo has this cross-vein on the left wing and missing on the right wing. Distal portions of R 3, R 4, and R 5 straight, parallel to each other. Cell r 3 without stem. Discal cell missing due to reduction of vein m-m. Cell m 1 short, its stem 3 × as long as cell itself. Cross-vein m-cu short distance beyond branching point of M. Vein CuP slightly sinuous, A 1 slightly arched. Anal angle large, widely rounded. Halter yellow with slightly darkened knob. Length of male halter 1.0 mm, of female 0.9–1.0 mm. Fore and middle coxae pale, densely covered with grey pruinosity, posterior coxae yellow. Trochanters yellow. Femora and tibiae pale brown to brown with slightly darkened apices, basal tarsomeres pale brown, distal tarsomeres darker brown. Male femur I: 3.9–4.8 mm long, II: 5.1 mm, III: 4.3–5.0 mm, tibia I: 3.7–4.7 mm, II: 4.6 mm, III: 4.1–4.8 mm, tarsus I: 4.9–6.8 mm, II: 5.5 mm, III: 4.7–5.3 mm. Female femur I: 3.5 mm long, II: 4.1–5.5 mm, III: 3.7–5.6 mm, tibia I: 3.5 mm, II: 3.6–4.9 mm, III: 3.4–5.1 mm, tarsus I: 5.0 mm, II: 3.7–4.9 mm, III: 4.6–5.3 mm. Claw dark brown, distinctly wider at base than distally.

Abdomen. Semi-polished, yellowish to greyish brown, covered with pale semi adjacent setae. Posterior margins of segments pale, wider on tergites. Basal sternite pale grey frontally. Pregenital segment darker brown. Male terminalia (Fig. 60 View Figures 58–61 ) dark brown. Posterior margin of epandrium with low and wide rectangular median lobe covered with dense short setae, lateral lobe long and narrow, strongly curved. Gonocoxite short and wide, ~ 1.5 × as long as wide, with apex slightly produced and covered with scarce strong short spines. Interbase yellow, large, nearly as long as gonocoxite itself, tip slightly curved, distal margin finely serrate. Outer gonostylus elongate, oval, fleshy and setose, distal part covered with short black strong spines. Inner gonostylus exceeds in length outer gonostylus, arched, fleshy and setose, distal half of mesal margin with few short spines. Aedeagus short, paramere slightly curved, extending well beyond tip of aedeagus. Ovipositor (Fig. 61 View Figures 58–61 ) yellow with dark brown ninth and tenth tergites and eight sternite. Basal half of cercus brownish, distal part paler. Hypogynial valve nearly straight, long and parallel-sided with pale rounded tip. Setae along dorsal margin of valve, common for most Rhaphidolabis , strongly reduced.

Elevation range.

From < 100 m to nearly 2000 m.

Period of activity.

Adults fly from late April through middle of October.

Habitats.

Margins of small fast running streams with rocky bottom, densely covered with shrubs. Adults are sometimes found hiding under bridges.

General distribution.

North and South Koreas.

Remark.

Species recorded from South Korea for the first time.