Phylidorea (Macrolabina) pernigrita ( Alexander, 1938 )

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 : 50-51

Phylidorea (Macrolabina) pernigrita ( Alexander, 1938)

Limnophila (Phylidorea) pernigrita Alexander, 1938: 156 . Phylidorea (Phylidorea) pernigrita Savchenko, 1983: 60 .

Phylidorea (Macrolabina) pernigrita Savchenko, 1986: 23 ; 1989: 103.

Male.

General: Body coloration gray because of dense pruinosity. Male body length 9.0-10.0 mm, wing length 8.8 mm.

Head: Brownish gray, narrowly light gray along eye margin and frontally above bases of antennae. Antenna black, 3.6 mm long, reaching to about base of abdomen if bent backward. Scape long, nearly cylindrical, about twice as long as succeeding segment. Pedicel subglobular. Six basal flagellomeres subglobular to short-oval, slightly dilated ventrally, remaining flagellomeres oval. Apical segment elongate. Longest verticils slightly exceed length of respective flagellomeres. Rostrum and palpus black.

Thorax: Pronotum brownish gray. Prescutum and presutural scutum brownish gray because of dense pruinosity, with three distinct polished black longitudinal stripes and black lateral margin. Median stripe wide, not reaching posterior margin of sclerite. Pseudosutural fovea distinct, polished black. Scutal lobe with polished black spot which makes extension of lateral prescutal stripe. Scutellum and mediotergite brownish gray because of dense pruinosity. Pleuron densely dusted with gray. Wing ( Fig. 1A ) with brownish tinge and pattern of brown spots: small spot behind R at about middle between arculus and base of Rs, more distinct spots at base of Rs and along cord; stigma distinct dark brown; brownish areas surround cross-veins and branching points, along veins M, CuA and anal vein. Veins brown, yellowish at wing base. Venation: Sc long, reaching wing margin at branching point of Rs, sc-r three times its own length before tip of Sc. Radial sector long, angulate at base. Free end of R 1 very short, nearly transverse. R 2 indistinct, at tip of R 1. R 3 and R 4 diverging towards wing margin, cell r 3 with short stem, which slightly exceeds length of R 2. Cross-vein r -m distinct, at base of discal cell. Discal cell slightly less than twice as long as wide. Cell m 1 long, slightly longer than stem. Cross-vein m -cu at middle length of discal cell. Anal vein long, slightly sinuous, reaching wing margin slightly before the level of Rs base. Anal lobe long and narrow, widely rounded. Halter uniformly yellow. Coxae black, dusted with gray. Trochanters obscure yellow. Basal half of fore femur yellow, distal part dark brown. Distal darkening narrower on middle and posterior femora. Tibia brownish yellow with narrowly dark brown apex. Tarsomeres dark brown with base of first tarsomere lighter brown. Tibia of foreleg with single apical spur, tibiae of middle and hind pairs of legs with two apical spurs each. Femur I: 5.7 mm long; tibia I: 7.2 mm.

Abdomen: Black. Epandrium wider than long, posterior margin slightly concave at middle. Gonocoxite with large setose, blunt-apexed conical lobe dorsally ( Fig. 1B ). Outer gonostylus distinctly widened laterally at base, widening densely setose with small setulae; distal part of gonostylus distinctly narrower, apex bifid. Inner gonostylus fleshy and setose, wider at base, narrowing towards distal end, apex rounded. Lateral process of aedeagal sheath wide plate-shaped with 3-4 spines distally. Aedeagus short and narrow, tube-shaped.

Female: Unknown from Korea.

Elevation range in Korea: Slightly above 1,000 m.

Period of activity in Korea: Mid-July.

Habitats: Moss-covered margins of streams and swampy shallow gullies in wet broad-leaved forests in southern part of the Far East of Russia close to the border with North Korea ( Savchenko, 1983).

General distribution: Northern Korea ( Fig. 6A ) and Far East of Russia.

Examined material: paratype (topotypic), male (antenna, wing, fore leg and genitalia slide-mounted), N. Corea, Chonsani Paiktusan, alt. 3,500 ft. [1,067 m], July 18, 1937, coll. A. M. Yankovsky ( USNM) .

Figures

Fig. 1. Phylidorea (Macrolabina) pernigrita (Alexander, 1938), paratype. A. wing. B. male genitalia, dorsal view. Scale bars 0.5 mm. Abbreviations: aed-aedeagus; an lb -anal lobe; bm-basal medial cell; C-costal vein; CuA-anterior branch of cubital vein; dm -discal medial cell; goncx -gonocoxite; h -humeral vein; i gonst-inner gonostylus; lp -lateral process of aedeagal sheath; M-medial vein, or media; M1 -first branch of media; M2 -second branch of media; M3 -third branch of media; M4 -fourth branch of media; m-cu-medial-cubital crossvein; m-m -medial crossvein; o gonst -outer gonostylus; R-radius, or radial vein; R1 -anterior branch of radius; R2 -second branch of radius; R3 -lower branch of second branch of radius; R4 -upper branch of third branch of radi- us; R5 -lower branch of third branch of radius; Rs-radial sector; Sc-subcostal vein; tg-tergite.

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.