Phylidorea (Phylidorea) umbrarum ( Krogerus, 1937 )

Podenas, Sigitas & Byun, Sun-Jae Park and Hye-Woo, 2022, Phylidorea crane flies (Diptera: Limoniidae) of Korea, Journal of Species Research 11 (1), pp. 47-60 : 56-58

Phylidorea (Phylidorea) umbrarum ( Krogerus, 1937)

Limnophila umbrarum Krogerus, 1937: 57-58 ; Tjeder,

1969: 256. Limnophila megapygia Alexander, 1938: 154 . Limnophila subglabricula Lackschewitz, 1964: 730 . Phylidorea (Phylidorea) umbrarum Savchenko, 1983:

59-60; 1989: 108.

General: Body coloration yellow with contrastingly dark brown tip of abdomen in male. Male body length 4.7-6.7 mm, female 7.8-8.5 mm, male wing length 5.8- 7.3 mm, female 7.0-8.0 mm.

Head: Light brownish-gray frontally, yellowish posteriorly, pale yellow ventrally, narrowly light gray along eye margin, sparsely covered with short, yellowish semi-erect setae. Vertex with low wide indistinct tubercle. Eyes widely separated in both sexes, distance between them at base of antennae approximately equal length of scape and pedicel taken together. Antenna 2.8-4.2 mm long in male, reaching about middle of third abdominal segment, if bent backwards, 1.4 mm in female. Scape yellow, elongate, nearly cylindrical, sparsely dusted with gray, approximately twice as long as succeeding segment. Pedicel subglobular, yellow. Basal flagellomere yellow, flagellomeres 2-5 dark brown, narrowly and indistinctly yellowish at base. Flagellomeres ( Fig. 5A ) fusiform, covered with dense whitish pubescence. Verticils dark brown, approximately as long as respective segments. Apical segment small, distinctly shorter than preceding segment. Rostrum brownish yellow, palpus and mouth parts dark brown.

Thorax: Cervical sclerites brownish yellow. Pronotum widened posteriorly, brownish dorsally, pale yellow laterally. Prescutum and presutural scutum semi-polished brownish yellow, paler laterally, longitudinal stripes missing, prescutum of some specimens indistinctly darker medially. Tubercular pits indistinct, close to each other and surrounded with darker area. Pseudosutural fovea indistinct, slightly depressed. Scutal lobes and area between them uniformly brownish yellow. Scutellum light yellow. Mediotergite brownish yellow, paler yellow fronto-laterally. Dorsopleural membrane light yellow. Pleuron brownish yellow, paler posteriorly. Episternum setoseless, meron very small, pale yellow. Wing ( Fig. 5B ) iridescent, with brownish tinge, yellowish at base and in costal area. Darker areas narrowly surround base of Rs and cord. Stigma distinct, elongate, brown. Veins brown, yellowish at wing base. Venation: Sc long, reaching wing margin approximately at branching point of Rs, sc -r at tip of Sc. Radial sector long, angulate and short-spurred at base. Free end of R 1 indistinct, disappearing at wing margin. R 2 indistinct. R 3 and R 4 diverging, cell r 3 with short stem, which is approximately as long as basal deflection of R 5. Cross-vein r -m long and distinct, at base of discal cell. Discal cell long and narrow, 2.7 times as long as wide. Cell m 1 distinctly longer than its stem. Cross-vein m -cu slightly before middle of discal cell. Anal vein long, slightly sinuous, apex reaching wing margin slightly before the level of Rs base. Anal lobe long and narrow, widely rounded. Length of male halter 1.0- 1.2 mm, that of female 1.1-1.2 mm, stem pale yellow, knob darker brown. Coxae brownish yellow, sparsely dusted and bearing few erect yellow setae. Trochanters pale yellow to obscure yellow. Femur yellow with pale base and distinct dark brown apical ring. Whole surface covered with dense short semi-adja- cent brown setae. Tibia light yellow with narrowly dark brown apex. Basal tarsomere yellow basally brown distally, remaining 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: 4.2-5.0 mm long, II: 4.5-4.6 mm, III: 5.0- 5.3 mm, tibia I: 4.5- 5.7 mm, II: 4.5-5.0 mm, III: 4.2-6.3 mm, tarsus I: 4.5- 5.7 mm, II: 3.8-5.3 mm, III: 4.0- 4.6 mm. Female femur I: 4.0 mm long, II: 4.0 mm, III: 4.5-4.6 mm, tibia I: 4.5 mm, II: 4.0 mm, III: 4.2-5.0 mm, tarsus I: 4.0 mm, II: 3.5 mm, III: 3.6-3.7 mm. Claw simple, without spines, dark brown to black.

Abdomen: Tergites and sternites polished, yellow at base of abdomen, reddish yellow towards distal end, covered with erect scarce yellow setae. Posterior margins of tergites narrowly grayish. Male terminalia ( Fig. 5C ) and pregenital segment distinctly dark brown, female terminalia not darkened. Epandrium of male genitalia dark brown to black, distinctly wider than long, posterior margin with small incision at middle surrounded with small bumps on both sides. Gonocoxite brownish yellow, elongate with small blunt ventro-mesal lobe. Outer gonostylus long and narrow, sclerotized, apex strongly curved with small serration along outer margin. Inner gonostylus setose, wider at base, round-apexed, distinctly shorter than outer gonostylus. Lateral process of aedeagal sheath long and narrow, rod-shaped, arched and bearing very narrow setae-shaped branch at middle. Interbase plate-shaped, apex right-angled, medial margin with curved lobule at middle. Aedeagal apodeme transverse, plate-shaped with shallow emargination at anterior margin. Aedeagus long stout tube, extending distinctly beyond tip of lateral process of aedeagal sheath. Ovipositor ( Fig. 5D ) brownish yellow. Tenth tergite elongate, brownish yellow. Cercus long, brown with paler tip, distal part slightly raised upwards, blunt-apexed. Hypovalva yellow with brown base, wedge-shaped, with row of long strong setae along dorsal margin, only about one-fifth from base setoseless.

Elevation range in Korea: From 1,000 m to more than 1,800 m.

Period of activity in Korea: From mid-July through late August.

Habitat: Same as for P. longicornis pietatis ( Savchenko, 1983) .

General distribution: Finland, Russia, and North Korea ( Fig. 6E ).

Examined material: paratype of Limnophila megapygia , male (antenna, leg, wing and genitalia slide mounted), N. Corea, Chonsani , Paiktusan, alt. 3,500 ft. [1,067 m], July 15, 1937, coll. A. Yankovsky ( USNM) ; paratype of Limnophila megapygia , male (antenna, fore leg, wing and genitalia slide mounted), N. Corea, Chonsani , Paiktusan, alt. 3,700 ft. [1,128 m], July 21, 1937, coll. A. Yankovsky ( USNM); 1 male (pinned), North Korea, Kankyo Nando Puksu Pyaksan, alt. 6,000 ft. [1,829 m], July 24, 1939, coll. A. Yankovsky ( USNM); 1 female (pinned), North Korea, Kankyo Nando Puksu Pyaksan, alt. 4,000 ft. [1,219 m], August 6, 1939, coll. A. Yankovsky ( USNM); 1 female (pinned), North Korea, Kankyo Nando Puksu Pyaksan, alt. 5,000 ft. [1,524 m], August 17, 1939, coll. A. Yankovsky ( USNM); 1 male (pinned), North Korea, Kankyo Nando Puksu Pyaksan, alt. 5,000 ft. [1,524 m], August 21, 1939, coll. A. Yankovsky ( USNM) .

Figures

Fig. 5. Phylidorea (Phylidorea) umbrarum (Krogerus, 1937). A. male antennal flagellum. B. wing. C. male genitalia, dorsal view, paratype of Limnophila megapygia (syn. of P. umbrarum). D. ovipositor, lateral view. Scale bars 0.5 mm.

Fig. 6. Distribution maps of Korean Phylidorea crane flies.A. P.(Macrolabina) pernigrita. B. P.(Phylidorea) longicornis pietatis. C. P.(P.) melanommata. D. P. (P.) multidentata. E. P.(P.) umbrarum.