Limonia bidens Savchenko, 1979

Podenas, Sigitas & Podeniene, Virginija, 2017, Limonia crane flies (Diptera: Limoniidae) of Korea, Zootaxa 4231 (1), pp. 1-37 : 8-10

Limonia bidens Savchenko, 1979

( Figs. 5–8 )

Limonia bidens Savchenko, 1979: 153 .

Examined material: 6 males (pinned), North Korea, Seren Mts., altitudes from 2500 to 4000 ft., June 18 to July 6, 1938, Yankovsky ( USNM).

General body coloration brown ( Fig. 5 ). Male body length 8.4–9.8 mm, wing length 12.4–13.2 mm. Wing reaches distinctly beyond tip of abdomen.

Head. Dark brown with rusty brown posterior margin, dusted with gray, that is more intense frontally. Male antenna 2.15–2.45 mm long, 14-segmented. Scape dark brown, pedicel dark brown with yellowish distal nargin. Flagellum brown except yellow base of basal flagellomere. Longest verticils more than three times as long as respective segments. Rostrum black. Basal palpomere black, second and third brown with yellowish base, last palpomere dark brown.

Thorax. Pronotum light brown, posteriorly yellowish, lateral and frontal margins narrowly dark brown. Mesonotal prescutum with three wide brown stripes, that nearly reach each other, only area around pseudosutural fovea and posterior margin of sclerite yellowish. Scutal lobe brown with yellowish postero-lateral angle. Area between scutal lobes pale. Scutellum brown with pale area fronto-medially. Mediotergite brown. Pleuron brown. Wing ( Fig. 6 ) yellowish with large cloudy spots in all cells. Stigma large, grayish, surrounded by narrow brown margin. Veins brown, except yellow Sc. Venation: Sc1 reaching to about two thirds of Rs length, Sc2 slightly beyond tip of Sc1. Rs medium-long, slightly arched. Basal deflection of CuA1 shortly before branching point of M. Halter pale-yellowish with slightly infuscated knob, 2.0– 2.1 mm long in male. Fore coxa brown, middle and posterior coxae yellowish brown. Trochanters obscure yellow. Femora yellow with narrow distinct dark brown ring at apex preceded by pale yellow ring, area beyond middle slightly infuscated. Tibiae yellow with narrowly darkened distal end. Tarsomeres brown, except yellowish base of basal tarsomere. Male femur I: 6.5–7.3 mm, II: 7.1–8.1 mm, III: 8.1–8.9 mm; tibia I: 9.2–9.6 mm, II: 8.5–8.6 mm, III: 9.1–9.5 mm; tarsus I: 8.2–8.5 mm, II: 7.6–7.7 mm, III: 7.1– 7.8 mm.

Abdomen. Brown with narrowly grayish yellow posterior margins of segments. Basal sternites lighter. Male genitalia ( Figs. 7, 8 ) same color as rest of abdomen. Ninth tergum with small apical emargination, margins of which slightly extended. Gonocoxite with wide but low ventromesal lobe. Gonostylus slightly arched, wide at base, narrow at apex, very tip with two teeth. Paramere with long and narrow horn-shaped black prolongation. Penis comparatively long, narrow, bifid at apex.

Female undescribed.

Elevation range in Korea. Adults were collected at altitudes ranging from 760 m to 1220 m.

Period of activity. Adults are active and on the wing from middle of June through beginning of July.

Habitat. Information for the habitat of this species in North Korea is unavailable. Type specimens were captured near a stream ( Savchenko, 1979).

General distribution. Currently known from the southern part of Siberia, Far East of Russia , Mongolia and recorded here from the Korean Peninsula for the first time.

Figures

FIGURES 5 – 8. Limonia bidens. 5: male, general view; 6: wing; 7: male genitalia, dorsal view; 8: male genitalia, ventral view.