Prionolabis crane flies (Diptera: Limoniidae) of Korea Author Podenas, Sigitas Nature Research Centre, Akademijos str. 2, LT- 08412 Vilnius, Lithuania & Life Sciences Center of Vilnius University, Sauletekio str. 7, LT- 10257 Vilnius, Lithuania sigitas.podenas@gamtc.lt Author Park, Sun-Jae Animal Resources Division, National Institute of Biological Resources, Incheon 22689, Republic of Korea Author Aukštikalnienė, Hye-Woo Byun and Rasa text Journal of Species Research 2022 11 1 29 37 journal article 10.12651/JSR.2022.11.1.029 2713-8615 13140154 BEE6D442-CB16-4294-BA09-19873BBB283E Prionolabis dis ( Alexander, 1950 ) Limnophila dis Alexander, 1950: 430 . Prionolabis dis Oosterbroek, 2021 . General: Body coloration black. Body length of male 6.0- 6.5 mm , wing length 6.9-8.0 mm. Head: Black, pruinose. Male antenna ( Fig. 4A ) 4.2- 4.5 mm long, reaching to about middle of abdomen, if bent backwards. Both basal antennomeres black. Flagellum 13-segmented, dark brown, flagellomeres elongate, cylindrical, decreasing in length towards apex, apical segment 1.4 times as long as penultimate. Flagellum covered with abundant erect pubescence. Longest verticils reaching to about one-third length of respective segment. Rostrum and palpus black. Thorax: Black, sparsely pruinose. Mesonotal prescutum black, pruinose, longitudinal stripes missing. Pleuron uniformly black, densely dusted with brownish gray. Male wing ( Fig. 4B ) translucent, with dark brown tinge, darker in costal area, weakly darkened along cord, Rs , distal margin of discal cell, along veins CuA and A 1 . Stigma oval, light brown. Veins brown. Venation: Sc long, reaching wing margin at branching point of Rs , sc-r its own length C Fig. 4. Prionolabis dis ( Alexander, 1950 ) , male. A. antenna. B. wing. C. aedeagus, gonocoxite and gonostyli of male genitalia, slide-mounted, dorsal view, holotype. Scale bars: 1.0 mm (A, B), 0.5 mm (C). before tip of Sc . Rs long, angulate and short spurred at base. Free end of R 1 elongate, R 2 indistinct, nearly missing. R 3 and R 4 diverging towards wing margin, R 4 and R 5 also slightly diverging towards wing margin. Cell r 3 without stem, starting before basal deflection of R 5 . Discal cell 1.8 times as long as wide. Cell m 1 missing. Cross-vein m-m short but distinct, thus veins M 1+ 2 and M 3 separat- ed at base. Cross-vein m-cu at about mid-length of discal cell. CuA and CuP slightly arched before wing margin, anal vein slightly sinuous, reaching wing margin before level of Rs base. Anal angle long and wide, posterior margin widely rounded. Whole halter darkened except paler base of stem. Coxa black, sparsely pruinose, trochanter dark brown to black, femur black, tibia and basal tarsomere dark brown with blackened apices, remainder of tarsus black. Abdomen: Black. Male terminalia ( Fig. 4C ) concolorous with the rest of abdomen. Posterior margin of ninth tergite with shallow notch. Gonocoxite elongate, 1.7 times as long as wide, simple, without additional lobes. Outer gonostylus sclerotized, long and narrow with small subapical tooth medially. Inner gonostylus simple, short fleshy and setose, blunt-apexed. Paramere shaped as long flat plate narrowing towards rounded apex. Aedeagus long, wide at base, distal part narrow, rod-shaped. Fig. 5. Prionolabis yankovskyana ( Alexander, 1940 ) , male. A. wing. B. male genitalia slide-mounted, dorsal view, paratype. Sc ale bars: 1.0 mm (A), 0.5 mm (B). Female: unknown. Elevation range in Korea : All specimens collected at nearly 1,700 m altitude. Period of activity in Korea : Adults are active and flying in mid-June. Habitats: Unknown. General distribution: Endemic to North Korea . Examined material ( Fig. 6C ): holotype (as Limnophila dis ), male (antenna, wing, legs and genitalia slide mounted), North Korea , Kankyo Nando , Puksu Pyaksan , alt. 5,500 ft. [ 1,676 m ], June 13, 1939 , A. M. Yankovsky ( USNM ) .