Rhipidia (Rhipidia) sejuga Zhang, Li, Yang, 2014

Podenas, Sigitas, Byun, Hye-Woo & Kim, Sam-Kyu, 2016, Rhipidia crane flies (Diptera: Limoniidae) from Korea, Zootaxa 4136 (3), pp. 515-536 : 526-528

Rhipidia (Rhipidia) sejuga Zhang, Li, Yang, 2014

( Figs. 4 , 8, 14, 15, 19)

Rhipidia (Rhipidia) sejuga Zhang, Li, Yang, 2014: 227 –229.

Description. Brownish species based on mostly faded old available studied specimens. Body length of male 4.2– 5.9 mm, of female 4.2–7.3 mm. Wing length of male 5.1–7.3 mm, of female 6.2–8.6 mm.

Head brown, dusted with silvery gray and covered with sparse short semi-erect brown setae. Eyes large, narrowly separated dorsally, nearly reaching each other ventrally in both sexes. Length of male antennae 1.0– 1.3 mm, reaching slightly beyond frontal margin of prothorax when bent backwards. Antenna of female 1.2–1.3 mm long, reaching frontal margin of prothorax when bent backwards. Male antenna ( Fig. 4 ) bipectinate. Scape nearly cylindrical, approximately 2.5 times as long as wide, brown and bearing few short erect setae on dorsal surface. Pedicel as long as wide, widening distally, brown. Flagellum 12-segmented. Basal flagellomere short, slightly widened ventrally, brown with distinct pale apical pedicel. Flagellomeres two to seven with two branches each, widened at base. Widening brown, base and distal half pale, branches brown, longest slightly exceeding flagellomere itself. Eight and ninth flagellomeres with one short branch on ventral side, brown, each with pale apical pedicel. Tenth and eleventh flagellomeres elongate not pectinate. Apical flagellomere spindle-shaped, about 1.5 times as long as preceding segment, brown with whitish base. Longest verticils 1.1 times as long as respective segments, approximately as long as branches. Short, erect, whitish pubescence covers branches of flagellomeres nearly absent on flagellomeres themselves. Female antenna serrate. Rostrum brown, covered with sparse grayish pubescence. Palpus brown, palpomeres covered with short erect brown setae. Mouth parts slightly extended, same color as rostrum.

Cervical sclerites semi-polished, brown. Pronotum brown with narrowly yellowish posterior margin. Prescutum light brown with wide brown median stripe, darker frontally. Indistinct lateral stripes nearly entirely coalesce with median in some specimens and nearly missing in other, only anterior part preserved as darker spot. Pseudosutural fovea surrounded by lighter area. Scutal lobe light brown, postero-lateral margin yellowish. Area between scutal lobes dusted with gray. Scutellum brown, laterally and posteriorly densely covered with gray pubescence. Mediotergite yellowish brown with narrow median vitta posteriorly, which entirely absent in some specimens. Pleuron brown with wide brown longitudinal stripe extending from head to abdomen; narrow, less distinct stripe extending through katepisternum and middle coxa, areas other than stripes covered with dense gray pubescence. Katepisternum with few long yellowish setae. Wing (Fig. 8) brownish to grayish, with four grayish brown spots on frontal margin, first at wing base, second between it and base of Rs, surrounding additional crossvein in cell sc, third covering tip of Sc1 and Sc2, fourth at distal end of R1 and R2; grayish suture at cord with lots of small grayish spots distributed in all cells and along longitudinal veins. Veins brownish yellow, brown in darkened areas. Venation: Sc1 reaching to about one third of Rs. Sc2 close to tip of Sc1. Additional cross-vein present at middle of cell sc. R2 oblique, at tip of R1. Rs long, slightly arched at base. R3 and R4+5 long, cell r3 narrower towards wing margin. Cross-vein r-m well developed, at base of discal cell. Discal cell elongate, slightly more than twice as long as wide. Basal deflection of CuA1 slightly before branching point of M. First anal vein nearly straight, second anal vein arched before wing margin. Anal angle wide, posterior margin widely rounded. Length of male halter 0.8–0.9 mm, of female 0.7–0.9 mm long. Stem of halter pale, base yellowish, knob slightly darkened. Coxae brown dorsally and yellowish ventrally, dusted with gray. Trochanter yellow with dark brown rim on distal margin. Coxae and trochanters covered with comparatively long yellowish setae. Femur brownish yellow with widely darkened distal end. Tibia brownish yellow, distal end slightly darkened. Two basal tarsomeres brownish yellow with slightly darkened apices, remaining tarsomeres brown. Leg covered with short, adjacent brownish setae. Male femur I: 3.75–4.70 mm, II: 4.35–5.10 mm, III: 3.9 0–5.35 mm, tibiae I: 4.10–6.00 mm, II: 5.10–5.30 mm, III: 3.25–6.10 mm, tarsus I: 4.30–6.70 mm, II: 4.40–5.25 mm, III: 3.9 0–5.30 mm long. Female femur I: 4.2–5.3 mm long, II: 4.0– 6.2 mm, III: 4.2–6.7 mm, tibiae I: 4.5–6.1 mm, II: 4.1–5.7 mm, III: 4.5–7.4 mm, tarsus I: 5.3–7.3 mm, II: 4. 0–5.9 mm, III: 5. 0–5.8 mm. Claw brownish with small subbasal spine.

Abdominal tergites and sternites semi-polished. Tergites grayish-light brown, posterior margins narrowly gray. Sternites yellowish brown. Abdominal sclerites covered with semi-erect yellowish setae. Male genitalia ( Figs. 14, 15 ) brownish yellow. Ninth tergite transverse, posterior margin slightly emarginate at middle. Gonocoxite elongate with large blunt-apexed setose ventro-mesal lobe. Outer gonostylus narrow, strongly sclerotised, darkened distally, point-apexed, arched and reaching to about middle of inner gonostylus. Inner gonostylus oval with large rostral prolongation usually armed with six long subapical setae. Distal end of rostral prolongation beyond spines short, blunt-apexed. Fleshy, rounded lobe situated on dorsal surface of inner gonostylus above rostral prolongation. Paramere wide basally with distinctly narrowed blackish distal part. Penis long, simple, slightly narrower distally, extending beyond tips of parameres. Ninth sternite simple. Ovipositor ( Fig. 19 ) grayish at base, distal part of cercus and hypovalva grayish yellow. Cercus long and narrow, slightly arched upwards, tip point-apexed. Ventral part of eight sternite slightly inflated, hypovalva wide at base, turning distinctly narrower distally, reaching to about middle of cercus, tip point-apexed.

Elevation range in Korea. This species has a wide range of altitudinal distribution; adult specimens have been collected at altitudes from 40 m to above 2100 m.

Period of activity. Adults are flying from late May through middle of October in Korea.

Habitat. Adults were collected in abandoned agricultural fields surrounded by forest and near small rivulet surrounded by deciduous trees and agricultural fields.

General distribution. Species was known only from Eastern China (Beijing, Hebei).

Specimens examined ( Fig. 29 ): 1 male (pinned), Corea, Mt. Kongo, Oct. 14, ’33 [1933], J. Machida (USNM); 1 male (pinned), Corea, Mt. Kongo, Oct. 16, 1933, J. Machida (USNM); 1 female (pinned), Corea, Seren Mts., 5– 6000‘, X.9, 1937, Yankovsky (USNM); 2 males (on same pin), North Korea, Ompo, 150‘, V–25–1938, Yankovsky (USNM); 1 male (pinned), North Korea, Ompo, 300 ft., VI–3–1938, Yankovsky (USNM); 1 male (pinned), North Korea, Seren Mts., 2500 ft., VI–17–1938, Yankovsky (USNM); 1 male (pinned), North Korea, Seren Mts., 6000 ft., VI–25–1938, Yankovsky (USNM); 1 male, 1 female (pinned), North Korea, Seren Mts., 5500 ft., VI–25–1938, Yankovsky (USNM); 1 male (pinned), North Korea, Seren Mts., 3500 ft., IX–14–1938, Yankovsky (USNM); 3 males (on same pin), North Korea, Kankyo Nando, Puksu Pyaksan, alt. 4200 ft., VI–6–1939, A. Yankovsky (USNM); 1 male, 1 female (pinned), North Korea, Kankyo Nando, Puksu Pyaksan, alt. 7000 ft., VI–8–1939, A. Yankovsky (USNM); 2 females (pinned), North Korea, Chonsani, 4000 ft., VI–20–40 [1940], coll. Yankovsky (USNM); 1 female (pinned), North Korea, Chonsani, 4000 ft., VI–27–40 [1940], coll. Yankovsky (USNM); 2 females (pinned), North Korea, Pontani Paiktusan, 3500 ft., VII–28–40 [1940], coll. Yankovsky (USNM); 2 females (pinned), North Korea, Pontani Paiktusan, 6100 ft., VII–29–40 [1940], coll. Yankovsky (USNM); 1 female (pinned), North Korea, Pontani Paiktusan, 6200 ft., VII–29–40 [1940], coll. Yankovsky (USNM); 1 female (pinned), North Korea, Pontani Paiktusan, 5000-6000 ft., VIII–2–40 [1940], coll. Yankovsky (USNM); 1 female (pinned), North Korea, Pontani Paiktusan, 5800–6372 ft., VIII–4–40 [1940], coll. Yankovsky (USNM); 1 female (pinned), North Korea, Pontani Paiktusan, 6372 ft., VIII–8–1940, coll. Yankovsky (USNM); 1 male (pinned), North Korea, Pontani Paiktusan, 6100 ft., VIII–10–1940, coll. Yankovsky (USNM); 1 female (pinned), North Korea, Pontani Paiktusan, 6200 ft., VIII–10–1940, coll. Yankovsky (USNM); 1 female (pinned), North Korea, Pontani Paiktusan, 6370 ft., VIII–23–1940, coll. Yankovsky (USNM); 1 female (pinned), Korea, #12, Hwy. #20, 8 mi. SW Kangnung, 128º47‘E, 37º42‘N, 8 June 1954, 1925‘, George W. Byers (KU); 1 female (pinned), Korea, #13, Hwy. #20, 8 mi. SW Kangnung, 128º47‘E, 37º42‘N, 9 June 1954, 1925‘, George W. Byers (KU); 2 males, 3 females (pinned), Korea, Prov. S. Kangwon, Mts. Sorak-san, cca 700 m, 38º05‘20“N, 128º23‘18“E, 12.X.2001, leg A. Kun & L. Ronkay (HNHM); 1 female (in ethanol), S. Korea, Geojedo island, N34.72538, E128.62608, alt. 52 m, 2014.08.30 (2), S. Podenas (NIBR); 1 female (pinned), S. Korea, Jeollanam-do, Gurye-gun, Toji-myeon, Naeseo-ri, Piagol valley, N35.26590, E127.58096, alt. 446 m, 2015.06.30 (3) S. Podenas, at light (NIBR); 1 male (in ethanol), S. Korea, Gangwon-do, Pyeongchang-gun, Daegwallyeong-myeon, Byeongnae-ri, Odaesan NP, N37.70812, E128.61803, alt. 669 m, 2015.07.06(3), S. Kim, S. Podenas (NIBR).

Figures

FIGURES 1 – 5. Antennae of Rhipidia (Rhipidia). 1: R. (R.) longa, male; 2: R. (R.) longa, female; 3: R. (R.) maculata, male; 4: R. (R.) sejuga, male; 5: R. (R.) septentrionis, male.

FIGURES 10 – 16. Male genitalia of Rhipidia (Rhipidia), dorsal view. 10: R. (R.) longa, general view; 11: R. (R.) longa, gonostyles; 12: R. (R.) maculata, general view; 13: R. (R.) maculata, gonostyles; 14: R. (R.) sejuga, general view; 15: R. (R.) sejuga, gonostyles; 16: R. (R.) septentrionis, general view. Abbreviations: gonx, gonocoxite; i gonst, inner gonostylus; o gonst, outer gonostylus; p, penis; pm, paramere; rst pl, rostral prolongation; rst spn, rostral spines; tg 9, ninth tergite; vm l, ventromesal lobe of gonocoxite.

FIGURES 17 – 20. Ovipositors of Rhipidia (Rhipidia), lateral view. 17: R. (R.) longa; 18: R. (R.) maculata; 19: R. (R.) sejuga; 20: R. (R.) septentrionis. Abbreviations: cerc, cercus; hyp vlv, hypogynial valve; st 8, eight sternite; tg 9, ninth tergite; tg 10, tenth tergite.

FIGURES 27 – 31. Collecting sites of Rhipidia (Rhipidia) in Korean Peninsula. 27: R. (R.) longa; 28: R. (R.) maculata; 29: R. (R.) sejuga; 30: R. (R.) septentrionis; 31: R. (R.) serena sp. nov.