Austrolimnophila (Archilimnophila) unica

Podenas, Sigitas, Park, Sun-Jae, Byun, Hye-Woo, Kim, A-Young, Klein, Terry A. & Aukštikalnienė, Heung-Chul Kim and Rasa, 2020, New data on Limoniinae and Limnophilinae crane flies (Diptera: Limoniidae) of Korea, Journal of Species Research 9 (4), pp. 492-531 : 501-502

Austrolimnophila (Archilimnophila) unica

( Osten Sacken, 1869)

Limnophila unica Osten Sacken, 1869: 205-206 ; Tjeder, 1969: 254.

Limnophila humilis Meigen, 1830: 275-276 .

Limnophila prolixicornis Lundström, 1907: 26-27 ; Lackschewitz, 1940: 85.

Limnophila unicoides Alexander, 1924a: 574-575 .

Austrolimnophila (Archilimnophila) unica Savchenko, Krivolutskaya, 1976: 55 ; Savchenko, 1978: 375; 1986: 231; 1989: 65.

General: Body coloration dark brown densely dusted with gray. Body length of male 8.0- 9.2 mm, of female 8.2-11.0 mm. Wing length of male 8.2-9.0 mm, of female 8.8-10.5 mm.

Head: Dark brown, dusted with gray, sparsely covered with dark brown erect setae, distinctly narrower posteriorly. Vertex without tubercle. Eyes widely separated in both sexes, distance between them at base of antennae about as long as both basal antennomeres taken together. Antenna brown to dark brown, 2.0- 2.5 mm long in male, 2.0- 2.5 in female, extending to base of abdomen, if bent backward. Scape elongate, nearly cylindrical, twice as long as wide, pedicel widened distally, yellowish. Flagellomeres elongate, nearly cylindrical, narrower towards apex of antenna, densely covered with whitish pubescence. Apical segment approximately as long as preceding segment. Verticils dark brown, longest verticils approximately as long as respective segments. Rostrum brown, dusted with gray. Palpus and mouth parts brown.

Thorax: Cervical sclerites dark brown dusted with gray. Pronotum yellowish brown. Mesonotal prescutum brown, sparsely dusted with yellowish and with wide dark brown median stripe. Tubercular pits missing, pseudosutural fovea small and indistinct. Scutal lobe dark brown with yellow postero-lateral margin, area between lobes grayish. Scutellum dark brown, densely dusted with gray. Mediotergite dark brown densely covered with gray pruinosity. Pleuron brown, covered with gray pruinosity, katepisternum slightly infuscated ventrally. Wing ( Fig. 4A ) iridescent, translucent, patternless with distinct elongate dark brown stigma (could be faded in old specimens). Veins brownish, yellowish at wing base. Venation: Sc long, reaching wing margin approximately at branching point of Rs, sc-r at tip of Sc. Rs medium-long, distinctly arched at base. Free end of R 1 short, oblique, R 2 its own length from the apex of R 1, far beyond branching point of R 2 + 3 and R 4. R 3 and R 4 slightly arched, parallel to each other, cell r 3 with long stem, but stem is shorter than cell itself. Cross-vein r-m distinct, at base of discal cell. Discal cell twice as long as wide. Cross-vein m-cu slightly before middle of discal cell. Anal vein long, slightly arched at wing margin, apex before the level of Rs base. Anal angle long and narrow, widely rounded. Length of male halter 1.4-1.5 mm, of female 1.5-2.0 mm, stem light brown with pale base, knob darkened. Coxae obscure yellow, fore coxa slightly darkened frontally. Trochanters obscure yellow with darkened ventro-posterior margin. Femur brown with obscure brownish yellow base, narrowest on foreleg, broadest on hind femur. Tibia and tarsus brown, distal tarsomeres dark brown. Tibia of foreleg with single apical spur, tibiae of middle and hind pairs of legs with two apical spurs each. Male femur I: 5.0- 6.5 mm long, II: 5.0- 5.5 mm, III: 5.0- 6.2 mm, tibia I: 6.5-7.8 mm, II: 6.0- 7.0 mm, III: 7.0- 7.5 mm, tarsus I: 6.7-7.7 mm, II: 6.0- 7.3 mm, III: 7.0- 7.5 mm. Female femur I: 4.5-5.2 mm long, II: 5.0- 5.2 mm, III: 4.5-6.0 mm, tibia I: 6.0- 6.7 mm, II: 5.7-6.2 mm, III: 5.5-6.6 mm, tarsus I: 5.5-7.2 mm, II: 5.5-5.7 mm, III: 5.0- 5.2 mm long. Claw simple, without spines.

Abdomen: Abdominal segments semi-polished, covered with sparse yellowish setae. Tergites dark brown, sparsely dusted with gray, with paired transverse sutures at about middle of sclerite. Sternites obscure brownish yellow. Subgenital segment in both sexes dark brown. Male terminalia ( Fig. 4B ) black. Ninth tergite wider than longer, posterior margin with four distinct blackened lobes, two submedially with deep U-shaped incision between them and finger-shaped lobe on postero-lateral angles. Gonocoxite approximately twice as long as wide, with large ventro-mesal blunt-apexed lobe. Outer gonostylus setose, wide with blackened arched postero-mesal spine and small tooth-shaped lobule beyond middle of mesal margin. Inner gonostylus setose, long and narrow, with spine-shaped lobe on middle of posterior margin, distal part curved at right angle. Ninth sternite simple. Two pairs of dark brown, arched, spine-shaped parameres. Aedeagus short and wide. Ovipositor ( Fig. 4C ) dark brown at base, cercus and hypovalva brown with pale apices. Cercus elongate, distal part slightly raised upwards, apex point-shaped. Hypovalva long and straight, point-apexed, reaching to about middle of cercus.

Elevation range in Korea: From 150 to nearly 1900 m.

Period of activity in Korea: From middle of May through early August.

Habitats: Unknown in Korea. Collected in Europe by the senior author at river and stream margins covered with deciduous trees, in gardens, in birch, and in mixed forests. General distribution: Widely distributed Holarctic species.

Examined material ( Fig. 16D ): 1 male (pinned), North Korea, Ompo , 600 ft., 1938.05.18, A. Y. Yankovsky ( USNM) ; 1 male, 1 female (pinned), [N.] Korea, Seren Mts. , alt. 3000 ft., 1938.06.14, A. Y. Yankovsky ( USNM) ; 1 male (pinned), [N.] Korea, Seren Mts. , alt. 2800 ft., 1938.06.15, A. Y. Yankovsky ( USNM) ; 1 male, 1 female (pinned), [N.] Korea, Seren Mts. , alt. 3000 ft., 1938.06.15, A. Y. Yankovsky ( USNM) ; 1 male, 1 female (pinned), [N.] Korea, Seren Mts. , alt. 3800 ft., 1938.06.29 -30, A. Y. Yankovsky ( USNM) ; 1 male (pinned), [N.] Korea, Seren Mts. , alt. 2500 ft., 1938.07.03, A. Y. Yankovsky ( USNM) ; 1 male (pinned), [N.] Korea, Seren Mts. , alt. 3000 ft., 1938.07.05, A. Y. Yankovsky ( USNM) ; 2 females (pinned), [N.] Korea, Seren Mts. , alt. 4500 ft., 1938.07.10, A. Y. Yankovsky ( USNM) ; 1 male (pinned), [N.] Korea, Seren Mts. , alt. 3800 ft., 1938.07.10, A. Y. Yankovsky ( USNM) ; 1 male, 1 female (pinned), [N.] Korea, Seren Mts. , alt. 5000 ft., 1938.07.12, A. Y. Yankovsky ( USNM) ; 1 female (pinned), North Korea, Kankyo Nando , Puksu Pyaksan, alt. 4200 ft., 1939.06.04, A. Y. Yankovsky ( USNM) ; 1 male (pinned), North Korea, Kankyo Nando , Puksu Pyaksan, alt. 5500 ft., 1939.06.21, A. Y. Yankovsky ( USNM) ; 1 male (pinned), Korea, Toori , alt. 6000 ft., 1939.06.25 ( USNM) ; 2 females (pinned), North Korea, Kankyo Nando , Puksu Pyaksan, alt. 6000 ft., 1939.07.16, A. Y. Yankovsky ( USNM) ; 1 male (pinned), North Korea, Kankyo Nando , Puksu Pyaksan, alt. 6000 ft., 1939.07.24, A. Y. Yankovsky ( USNM) ; 1 male, 1 female (pinned, ovipositor in microvial with glycerol, wing slide-mounted), North Korea, Puksu Pyaksan , alt. 5500- 6000 ft., 1939.08.02, A. Y. Yankovsky ( USNM) ; 1 female (pinned), North Korea, Puksu Pyaksan , alt. 5500-6000 ft., 1939.08.03 ( USNM) ; 1 male (pinned), North Korea, Puksu Pyaksan , alt. 5000 ft., 1939.08.08 ( USNM) ; 2 males, 2 females (pinned), North Korea, Kankyo Nando , Puksu Pyaksan, alt. 5000 ft., 1939.08.09, A. Y. Yankovsky ( USNM) ; 1 male (pinned), N. Korea, Chonsani , 4000 ft., 1940.06.18, A. Y. Yankovsky ( USNM) ; 1 male, 1 female (pinned), N. Korea, Chonsani , 5000 ft., 1940.06.25, A. Y. Yankovsky ( USNM) ; 2 males, 1 female (pinned), N. Korea, Pontani Paiktusan , 6000 ft., 1940.07.25, A. Y. Yankovsky ( USNM) .

Figures

Fig. 4. Austrolimnophila (Archilimnophila) unica (Osten Sacken, 1869). A. wing. B. male genitalia, dorsal view. C. ovipositor, lateral view. Scale bars: 0.5mm.

Fig. 16. Distribution maps of Korean Limoniidae crane flies.A. Dicranomyia (Erostrata) submelas. B. Dicranoptycha venosa. C. Austrolimnophila(Archilimnophila) subunicoides. D. A.(A.) unica. E. A.(Austrolimnophila) asiatica. F. Conosia irrorata. G. Dicranophragma (Brachylimnophila) transitorium. H. D.(Dicranophragma) melaleucum melaleucum. I. Eloeophila persalsa. J. E. serenensis. K. E. subaprilina. L. E. ussuriana ussuriana. M. E. yezoensis. N. Paradelphomyia chosenica. O. P. macracantha.