Adelphomyia punctum

Adelphomyia punctum (Meigen, 1818) Figs 29–33 Limnobia punctum Meigen, 1818: 128. Limnophila punctum: Verrall 1886: 200; Meijere 1921: 65, 81; Pierre 1924: 121, 126; Nielsen 1925: 75; Lackschewitz 1940: 85. Adelphomyia helvetica: Bergroth 1891: 134–135; Pierre, 1924: 115. Limnophila (Adelphomyia) punctum: Alexander 1938: 324. Adelphomyia punctum: Savchenko 1986: 275; Savchenko 1989: 79. Examined material. (Fig. 49) North Korea • 2 ♂ (pinned); Ompo; alt. 76 m; 19 May 1937; Yankovsky leg.; USNM • 1 ♀ (pinned); Ompo; alt. 76 m; 9 June 1937; Yankovsky leg.; USNM • 1 ♂, 8 ♀ (pinned); Ompo; alt. 37 m; 15 June 1937; Yankovsky leg.; USNM • 1 ♂, 1 ex. (broken, pinned); Ompo; alt. 183 m; 23 June 1937; Yankovsky leg.; USNM • 1 ♂ (pinned); Ompo; alt. 274 m; 12 May 1938; Yankovsky leg.; USNM • 1 ♂ (pinned); Ompo; alt. 305 m; 13 May 1938; Yankovsky leg.; USNM • 1 ♂ (pinned); Ompo; alt. 46 m; 25 May 1938; A. Yankovsky leg.; USNM • 1 ♂ (pinned); Ompo; alt. 122 m; 27 May 1938; Yankovsky leg.; USNM • 1 ♂, 1 ♀ (pinned); Ompo; alt. 91 m; 29 May 1938; Yankovsky leg.; USNM • 1 ♂, 5 ♀ (pinned); Ompo; alt. 122 m; 3 June 1938; Yankovsky leg.; USNM • 1 ♀ (pinned); Ompo; alt. 91 m; 9 June 1938; Yankovsky leg.; USNM • 1 ♂, 3 ♀ (pinned); Ompo; alt. 91 m; 10 June 1938; Yankovsky leg.; USNM • 3 ♀ (pinned); Ompo; alt. 107 m; 11 June 1938; Yankovsky leg.; USNM • 3 ♂, 2 ♀ (pinned); Seren Mts.; alt. 762 m; 14 June 1938; A. Yankovsky leg.; USNM • 2 ♂ (pinned); Seren Mts.; alt. 853 m; 15 June 1938; Yankovsky leg.; USNM • 1 ♂ (pinned); Seren Mts.; alt. 914 m; 22 June 1938; A. Yankovsky leg.; USNM • 2 ♂, 1 ex. (broken, pinned); Seren Mts.; alt. 1067 m; 22 June 1938; A. Yankovsky leg.; USNM • 1 ♂ (pinned); Seren Mts.; alt. 1219 m; 22 June 1938; A. M. Yankovsky leg.; USNM • 1 ♀ (pinned); Seren Mts.; alt. 1524–1829 m; 25 June 1938; A. M. Yankovsky leg.; USNM • 1 ♀ (pinned); Seren Mts.; alt. 1676 m; 25 June 1938; A. Yankovsky leg.; USNM • 2 ♂, 1 ♀ (pinned); Seren Mts.; alt. 1829 m; 25 June 1938; A. Yankovsky leg.; USNM • 1 ♂ (pinned); Seren Mts.; alt. 914 m; 30 June 1938; A. Yankovsky leg.; USNM • 1 ♂ abdomen (pinned); Kankyo Nando Puksu Pyaksan; alt. 1829 m; 15 June 1939; Yankovsky leg.; USNM • 1 ♂ (pinned, genitalia dissected in microvial with glycerol on same pin); Kankyo Nando, Puksu Pyaksan; alt. 1676 m; 17 July 1939; A. Yankovsky leg.; USNM • 1 ♂, 1 ♀ (pinned); Kankyo Nando, Puksu Pyaksan; alt. 1829 m; 24 July 1939; A. Yankovsky leg.; USNM • 1 ♂, 2 ♀ (pinned); Kankyo Nando, Puksu Pyaksan; alt. 1524 m; 3 August 1939; A. Yankovsky leg.; USNM; South Korea • 1 ♂ (in ethanol); Gangwon-do, Pyeonchang-gun, Odaesan National Park; 37.74913°N, 128.57723°E; alt. 726 m; 22 June 2012; S. Kim, S. Podenas leg.; NIBR • 2 ♂ (in ethanol); Jeollabuk-do, Namwon, Unbong-eup, Hwasu-ri; 35.45345°N, 127.57759°E; alt. 509 m; 6 May 2013 (01); S. Podenas leg.; NIBR • 1 ♂ (in ethanol); Gyeongsangnam-do, Hamyang, Macheon-myeon, Samjeong-ri; 35.36713°N, 127.65228°E; alt. 406 m; 11 May 2013 (5); S. Podenas leg.; NIBR • 2 ♂ (in ethanol); Gyeonggi-do, Paju-si, Gunnae-myeon, Jeomwon-ri, Gate (South-MDL); 37.93430°N, 126.72097°E; alt. 39 m; 20 May 2016; T. E. Klein, H. - C. Kim leg.; Mosquito Magnet; NIBR • 1 ♀ (in ethanol); Jeollanam-do, Gurye-gun, Toji-myeon, Naeseo-ri, Piagol valley; 35.27333°N, 127.56924°E; alt. 546 m; 3 June 2016 (3); S. Podenas leg.; NIBR • 1 ♀ (in ethanol); Jeollanam-do, Gurye-gun, Toji-myeon, Naeseo-ri, Piagol valley; 35.27123°N, 127.57133°E; alt. 534 m; 4 June 2016 (1); V. Podeniene leg.; NIBR • 2 ♂ (in ethanol); Gyeonggi-do, Paju-si, Gunnae-myeon, Jeomwon-ri, Gate (South-MDL); 37.93431°N, 126.72096°E; alt. 39 m; 17 May 2019; T. E. Klein, H. - C. Kim leg.; Mosquito Magnet; NIBR. Comparative material examined. Lithuania • 1 ♂ (genitalia in microvial with glycerol); Raseiniai district, Sargeliai; 55.4762°N, 23.4563°E; 5–13 June 2009; NRC • 1 ♂, 1 ♀ (pinned); Moletai distr., river Skardis; 55.29132°N, 025.45485°E; alt. 150 m; 26 May 2012; S. Podenas leg.; NRC. Redescription. General body colouration varies from yellowish brown to greyish brown. Body length of male 3.9–8.2 mm, female 6.4–7.2 mm. Male wing: 6.1–8.8 mm; female wing: 6.1–8.3 mm. Head. Slightly extended posteriorly, grey, brownish grey postero-laterally, pale grey frontally, covered with long, sparse, yellowish setae, longest of which nearly as long as both basal antennomeres combined. Eyes widely separated in both sexes, distance between them at base of antennae nearly same as length of both basal antennomeres together. Length of male antenna 0.9–1.8 mm, reaching wing base if bent backward; female 1.1–1.3 mm. Scape brown dusted with grey, elongate, nearly cylindrical, 2.2 × as long as wide and 2 × as long as pedicel. Pedicel oval, brown, covered with few short setae. Flagellum 14 - segmented, brown, distal flagellomeres darker. Flagellomeres oval with short apical pedicels, apical segment nearly as long as preceding. Verticils up to 2.5 × as long as respective segments. Short erect pubescence, covering segments pale. Rostrum, palpi, and mouth parts dark brown to blackish. Thorax. Cervical sclerites brown, dark brown ventrally, covered with grey pruinosity. Thorax yellowish brown to brown covered with sparse grey pruinosity. Pronotum pale brown to brown, dusted with grey, dorso-laterally covered with sparse erect long setae. Mesonotal prescutum semi-polished, pale brown, sparsely dusted with grey, yellowish laterally, covered with sparse erect setae, longitudinal stripes absent or very indistinct in some specimens. Tubercular pit small, brown, close to frontal margin of sclerite, pseudosutural fovea distinct dark brown. Scutal lobe frontally concolourous with presutural scutum, laterally and posteriorly brownish yellow. Area between scutal lobes greyish. Scutellum brownish at the middle, yellow laterally. Mediotergite yellow with narrow indistinct greyish brown median line. Pleuron bare, without setae, brownish yellow, sparsely dusted with grey; posterior basal area brown. Wing (Fig. 29) semi-translucent, with indistinct darkening surrounding cross-veins and apices of all longitudinal veins at wing margin, some specimens without such darkening. Stigma elongate, brownish. Veins brown, yellowish at wing base and in costal area. Macrotrichiae more abundant in radial cells and cell m 1, present also in other marginal cells along postero-apical wing margin. Venation: Sc long, but not reaching branching point of Rs, sc-r ~ 3 × its own length from tip of Sc. Rs long, slightly arched or angulate at base, with or without short spur. Free end of R 1 longitudinal, R 2 transverse, indistinct, ~ 2 × its own length from tip of R 1, R 3, and R 4 slightly diverging towards wing margin, cell r 3 with short stem. Cross-vein r-m distinct, at base of discal cell. Discal cell 2 × as long as wide. Cross-vein m-cu slightly before middle of discal cell. Anal vein slightly arched at wing margin, ending slightly before base of Rs. Anal angle widely rounded. Male halter 0.9–1.7 mm long, female 0.8–1.3 mm. Halter pale brownish, knob slightly infuscate distally. Frontal coxa pale brown frontally, yellow posteriorly, remaining coxae yellow, slightly dusted with grey, covered with long erect yellowish setae. Trochanters yellow to brownish yellow. Femur yellow, darkened at apex, tibia yellowish brown with darkened distal part, tarsomeres dark brown, only base of basal tarsomeres yellowish. Male femur I: 3.9–5.0 mm, II: 4.2–5.2 mm, III: 4.2–6.2 mm, tibia I: 5.7–5.9 mm, II: 4.8–5.5 mm, III: 4.5–6.2 mm, tarsus I: 5.7–6.4 mm, II: 5.4–5.9 mm, III: 3.9–5.3 mm. Female femur I: 3.6 mm long, II: 3.8–4.2 mm, III: 4.1–4.7 mm, tibia I: 4.1 mm, II: 3.5–4.0 mm, III: 4.0–5.0 mm, tarsus I: 3.9–4.0 mm, II: 3.5–3.8 mm, III: 3.1–3.7 mm long. Claw simple without subbasal spines or teeth. Abdomen. Semi-polished brownish yellow to brown. Two pregenital segments darkened in male, concolourous with the rest abdominal segments in female. Tergites with narrowly darkened lateral margins, with two transverse narrow indentations frontally and slightly paler posterior margin in both sexes. Male terminalia (Figs 30, 31) brownish yellow. Ninth tergite with two triangle-shaped lobes at the middle of posterior margin. Gonocoxite elongate, distinctly wider at base, narrower beyond middle, without additional lobe. Outer gonostylus with long narrow outer branch and small rounded lobe at base. Outer branch with sclerotised distal part and blackened apex, two small apical hook-shaped teeth curved medially. Inner gonostylus large, fleshy, setose, two-branched. Outer branch long and narrow, inner branch narrowly triangle-shaped reaching approximately to middle of outer branch. Aedeagus (Fig. 32) long and nearly straight, paramere posteriorly short, slightly arched, reaching before middle of aedeagus. Ovipositor (Fig. 33) yellow with very long, narrow cercus and hypovalva. Distal part of cercus slightly turned upwards, dorsal margin brownish, apex point-shaped. Hypogynial valve long, straight, wide at base, narrowing towards apex, distal part distinctly narrower, apex reaching beyond middle of cercus, dorsal margin at ~ 1 / 4 length from apex with long dense setae. Elevation range. From the lowest elevations in Korea to more than 1800 m. Period of activity. Adults on wing from beginning of May through early August. Habitat. Wet places near streams and ponds surrounded by deciduous trees and in wet places of deciduous and mixed forests. General distribution. Species has widely disjunct area, it is widely distributed in Europe, recorded also from eastern part of East Palaearctic. Recorded from the Korean Peninsula for the first time. Remarks. Some specimens from North Korea are distinctly darker than specimens from Europe, their wings lack any pattern except stigma. At the moment, it is difficult to say if that is variation or colour change due to long preservation. North Korean specimens were collected 80 years ago. We examined male genitalia of these specimens and com