Dicranomyia (Erostrata) submelas Kato, Tachi and Gelhaus, 2018

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 : 496-497

Dicranomyia (Erostrata) submelas Kato, Tachi and Gelhaus, 2018

Dicranomyia (Erostrata) submelas Kato, Tachi and Gelhaus, 2018: 187-189 .

General: Body coloration dark brown. Body length of male 4.0 mm, wing length 5.0 mm.

Head: Dark brown, nearly black. Vertex with small tubercle covered with a few semi-erect blackish setae. Eyes widely separated. Antenna ( Fig. 1A ) 1.05 mm long, reaching beyond middle of prescutum if bent backwards. Scape brown, elongate, widening distally. Pedicel dark brown, subglobular, slightly shorter than scape. Flagellum entirely dark brown. Flagellomeres with short pale apical pedicels, seven basal segments subglobular, remaining segments elongate. Apical flagellomere narrow, approximately as long as penultimate. Longest verticils slightly exceeding in length respective segments. Rostrum brown and very short. Palpus dark brown, very short, one-segmented with few long setae at apex.

Thorax: Cervical sclerites and pronotum dark brown to blackish. Mesonotal prescutum dark brown, paler along lateral margin. Scutal lobe dark brown with paler brown postero-lateral angle, area between lobes pale-brown. Scutellum brown frontally, dark brown posteriorly. Mediotergite uniformly grayish brown. Pleuron grayish brown with very indistinct longitudinal stripe. Wing ( Fig. 1B ) tinged with blackish brown, stigma indistinct, nearly lacking. Veins dark brown. Venation: Sc long, reaching slightly before the middle of Rs, sc-r at tip of Sc. Rs long, nearly straight, just slightly arched at base. R 1 indistinct, transverse. R 2 distinctly beyond tip of R 1. R 4 and R 5 long, slightly arched and parallel to each other. Cross-vein r-m at base of discal cell. Discal cell 1.4 times as long as wide, m-cu at base of discal cell. CuP and anal vein slightly diverging, nearly straight, just slightly arched before wing margin. Anal lobe medium-wide, widely rounded. Halter 0.8 mm long, blackish with yellowish base of stem. Coxae generally grayish brown, but frontal coxa slightly darker and posterior lighter than middle coxa. Trochanters pale brown. Coxae ventrally and trochanters bearing long setae. Leg dark brown with paler base of femur.

Abdomen: Tergites dark brown, nearly black. Two basal sternites pale brown, remaining dark brown, seventh sternite with a long and narrow internal sac at posterior margin ( Fig. 1F ). Male terminalia ( Fig. 1C ) same color as rest of abdomen. Ninth tergite slightly wider than longer with deep and wide notch at middle of posterior margin and lateral setose lobes on both sides. Gonocoxite elongate, cylindrical with long blunt-apexed setose ventro-mesal lobe at distal end. One pair of gonostyli. Gonostylus ( Fig. 1D ) large, nearly as long as gonocoxite, distinctly extended along outer margin, slightly arched, distal margin densely covered with strong blackish spines, outer margin near base with small tubercle armed with two spines. Paramere ( Fig. 1E ) generally triangle-shaped, very wide and flat at base, distal part with long and narrow prolon- gation, with hook-shaped apex in dorsal view. Penis long and narrow, nearly cylindrical, covered with fine setae, shortly bilobed at apex.

Elevation range in Korea: Close to sea level.

Period of activity: It was collected in mid-June in Korea, but adults are only observed to be active August- September in Japan.

Habitats: Small groove of deciduous trees and shrubs surrounded by buildings from one side, road and agricultural fields from the other, short distance from small stream and 1.2 km from large river.

General distribution: Previously known from Honshu, Shikoku, and Kyushu Islands, Japan. Recorded from the Korean Peninsula for the first time.

Examined material ( Fig. 16A ): 1 male (in EtOH), S. Korea, Gyeonggi-do, Paju-si, Gunnae-myeon, Jeongja-ri ,

Warrior Base Training area , N 37.91778, E 126.74159, alt. 18 m, 2019.06.26, T . A. Klein, H.-C. Kim, NJ trap ( NIBR) .

Figures

Fig. 1. Dicranomyia(Erostrata) submelas Kato et al., 2018, male.A. antenna. B. wing. C. male genitalia, dorsal view. D. gonostylus. E. paramere. F. seventh sternite with internal sac. Scale bars: 0.1mm.

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.