Adelphomyia jejuana Podenas, 2024

Podenas, Sigitas, Park, Sun-Jae & Bae, Changhwan, 2024, Adelphomyia crane flies (Diptera, Limoniidae) of Korea with identification key for all Palaearctic species, ZooKeys 1217, pp. 47-78 : 47-78

Adelphomyia jejuana Podenas sp. nov.

Figs 40–43 , 44–46

Type material examined.

South Korea • Holotype ♂ (pinned, wing slide-mounted, genitalia in microvial with glycerol on same pin); Jeju-do, Jeju-si, Hallasan National Forest ; 33.43222°N, 126.59776°E; alt. 577 m; 24 May 2017 (1); S. Podenas leg.; NIBR . Paratypes • 1 ♀ (pinned, wing slide-mounted); same data as holotype, topotypic; NIBR • 1 ♀ (in ethanol); Jeju-do, Seogwipo-si, Saekdal-dong ; 33.36044°N, 126.46275°E; alt. 1103 m; 19 June 2019 (1); S. Podenas leg.; NIBR .

Diagnosis.

Reddish brown species ~ 4–7 mm long (Figs 40 , 44 ). Head greyish brown, thorax pale brown, prescutal stripes missing. Wing brownish, no pattern with indistinct stigma. Abdomen yellow, dorsally slightly darker than ventrally. Ninth tergite of male genitalia with two point-apexed triangle-shaped lobes at posterior margin. Gonocoxite elongate. Outer gonostylus with long narrow outer branch and small angulate lobe at base. Outer branch with longitudinal wrinkles, sclerotised distal part and blackened apex. Distal part with widely rounded medial edge and two small apical hook-shaped teeth curved medially. Inner gonostylus large, fleshy, setose, two-branched. Aedeagus comparatively short, slightly arched, paramere narrowly rod-shaped, slightly arched, reaching to ~ 2 / 3 of aedeagus length. Ovipositor yellow with very long, narrow cercus and hypovalva. Apical part of cercus slightly turned upwards.

Etymology.

Species is named after its type locality, Jeju Island, Korea.

Description.

General body colour reddish brown (Figs 40 , 44 ). Body length of male ~ 4 mm, female 5.3–6.8 mm. Male wing: 6.2 mm, female wing: 6.7 mm.

Head. Greyish brown, posteriorly pale brown, pale grey along eye margin, with few yellowish setae dorsally. Eyes widely separated in both sexes, distance between them at base of antennae same as length of scape. Length of female antenna 1.2 mm, reaching wing base if bent backwards. Scape brown dusted with grey, elongate, nearly cylindrical, 2 × as long as wide, and 2 × as long as pedicel. Pedicel rounded, brown, covered with few short setae. Flagellum 14 - segmented, pale brown. Flagellomeres oval with short apical pedicels, apical segment as long as preceding. Verticils 2 × as long as respective segments. Short erect pubescence, covering segments pale. Rostrum, palpi, and mouth parts brown sparsely dusted with grey.

Thorax. Brownish yellow, covered with sparse brownish grey pruinosity. Cervical sclerites and pronotum brown sparsely dusted with grey. Pronotum elongate with extended postero-lateral angle. Mesonotal prescutum semi-polished, brownish yellow with sparse grey pruinosity, frontal margin slightly darkened, stripes missing. Scutal lobes, scutellum, and mediotergite uniformly brownish yellow. Pleuron brownish yellow indistinctly darker above coxae. Wing (Figs 41 , 45 ) translucent with weak brownish tint, slightly yellowish at base. No darkening along cross-veins or branching points of veins. Stigma indistinct, nearly missing. Veins pale brown. Wing venation: vein Sc long, apex reaching wing margin slightly before branching point of radial sector, sc-r 2 × its own length before apex of Sc, Rs long, nearly straight, just slightly arched at base, R 2 4 × its own length before apex of R 1, cell r 1 slightly widened at wing margin; 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 2.3 × as long as wide. Cross-vein m-cu slightly before middle of discal cell. Anal vein slightly arched at wing margin, ending at the level of Rs base in male, slightly beyond base of Rs in female. Anal angle widely rounded. Male halter 0.8 mm long, female 1.0 mm. Halter brownish yellow, knob with greyish tinge. Coxae and trochanters brownish yellow, legs yellow with brownish distal tarsomeres. Male femur I: 3.6 mm, III: 4.5 mm, tibia I: 4.7 mm, III: 4.6 mm, tarsus I: 4.7 mm, III: 4.0 mm. Female femur I: 3.7 mm long, II: 3.5 mm, III: 4.2 mm, tibia I: 4.0 mm, II: 3.5 mm, III: 4.2 mm, tarsus I: 4.0 mm, II: 3.5 mm, III: 3.5 mm long. Claw simple without subbasal spines or teeth.

Abdomen. Tergites brownish yellow, sternites yellow. Male terminalia (Fig. 42 ) yellow. Ninth tergite with two sharply apexed triangle-shaped lobes at the middle of posterior margin and wide V-shaped emargination between them. Gonocoxite elongate, wider at base, narrower beyond two thirds of length, without additional lobe. Outer gonostylus with long, narrow outer branch and small angulate lobe at base. Outer branch with longitudinal wrinkles, sclerotised distal part and blackened apex. Distal part with widely rounded medial edge and two small apical hook-shaped teeth curved medially. Inner gonostylus large, fleshy, setose, two-branched. Outer branch long, narrow, inner branch short triangle-shaped reaching to ~ 1 / 4 of outer branch length. Aedeagus (Fig. 43 ) comparatively short, slightly arched, paramere narrowly rod-shaped, slightly arched, reaching to ~ 2 / 3 of aedeagus. Distal part of interbase pale yellow, rounded. Ovipositor (Fig. 46 ) yellow with very long narrow cercus and hypovalva. Apical part of cercus slightly raised upwards. Hypogynial valve wide at base, apical part distinctly narrower, dorso-apical margin covered with long setae. Apex of hypogynial valve reaches slightly beyond middle of cercus.

Distribution.

Currently known only from Jeju Island, South Korea (Fig. 50 ).

Habitats.

Small valley of temporary stream covered with deciduous trees and shrubs, moss-covered rocks; small swampy meadow on the edge of small stream surrounded by deciduous forest.

Elevation.

From less than 600 m to 1100 m.

Period of activity.

Adults on wing from late May through middle of June.

Remarks.

Adelphomyia jejuana Podenas , sp. nov., having unpatterned wings and pale body colouration, resembling A. flavella but differs from it by details of male terminalia and darker body colouration. Ninth tergite of A. jejuana Podenas , sp. nov., especially lobes on posterior margin, resemble that of A. acicularis bidens , but in A. jejuana Podenas , sp. nov. they are distinctly wider at base and point-apexed. Subapical angle of outer gonostylus is low and widely rounded in A. jejuana Podenas , sp. nov., when that in most other Palaearctic species is very distinct and nearly right-angled. Aedeagus of A. jejuana Podenas , sp. nov. is shorter than that in A. flavella , just slightly extending beyond apices of parameres, when that in A. flavella is very long and distinctly curved. Aedeagus in A. acicularis bidens , A. saitamae , A. macrotrichiata , A. breviramus , A. biacus , and A. flavella is strongly curved at nearly right angle, straight in A. punctum , A. casiella , and A. satsumicola , but slightly arched in A. jejuana Podenas , sp. nov. Paramere of A. jejuana Podenas , sp. nov. is similar to that of A. flavella .

Other examined material from Palaearctic

Adelphomyia acicularis acicularis ( Alexander, 1954) (Figs 1–3 ). Japan • Holotype ♂; as Limnophilla (Adelphomyia) acicularis ; wing, leg, and genitalia slide-mounted; Shikoku, Mt. Tsurugi-Awa ; 1 June 1950; Issiki-Ito leg.; USNM; • Paratype ♂; head, wing, leg, and genitalia slide-mounted; Shikoku , Imanoyama, Tosa; alt. 865 m; 12 May 1951; Issiki-Ito leg.; USNM.

Adelphomyia biacus ( Alexander, 1954) (Figs 9–11 ). Japan as Limnophila (Adelphomyia) biacus ; • Holotype ♂; slide – mounted; Shikoku , Mt. Isizuti; June 10, 1950; Issiki-Ito leg.; USNM; • Paratype ♂; slide-mounted; Shikoku , Omogokei; June 6, 1952; T. Yano leg.; USNM.

Adelphomyia breviramus ( Alexander, 1924) (Figs 12–14 ). Japan as Limnophila (Lasiomastix) breviramus ; • Holotype ♂; slide-mounted; Yumoto ; alt. 1774 m; 23 July 1923; T. Esaki leg.; USNM; • Metatype ♂; slide-mounted; Shikoku, Mt. Ishizuchi-Iyo; 9 June 1950; Issiki Ito leg.; USNM; as Limnophila (Adelphomyia) brevirama ; • Metatype ♂; slide-mounted; Hida, Ontake; 26 July 1959; T. Mishima leg.; USNM.

Adelphomyia caesiella ( Alexander, 1929) (Figs 15 , 16 ). Japan as Limnophila (Tricholimnophila) caesiella ; • Metatype ♂; slide-mounted; Kiushiu, Mt. Kirishima; alt. 762 m; 3 May 1929; S. Issiki leg.; USNM.

Adelphomyia pilifer ( Alexander, 1919) (Figs 24–26 ). Japan • Paratopotype ♂; as Limnophila (Lasiomastix) pilifer ; slide-mounted wing and genitalia; Tokyo, Meguro ; 9 April 1919; R. Takahashi leg.; USNM • 1 ♂; pinned; Hokkaido, near Sapporo, Maruyama ; 31 May 1953; S. Kuwayama leg.; USNM • 2 ♂, 1 specimen with broken abdomen; pinned; Hokkaido, Prov. Ishikari, Nopporo ; 18 June 1953; Y. Nishio leg.; USNM.

Adelphomyia prionolaboides ( Alexander, 1934) (Figs 27 , 28 ). Japan as Limnophila (Adelphomyia) prionolaboides ; • Metatype ♂; slide-mounted; Mino, Sakauchi; 4 May 1958; T. Mishima leg.; USNM.

Adelphomyia saitamae ( Alexander, 1920) (Figs 34 , 35 ). Japan as Limnophila saitamae ; • Metatype ♂; slide-mounted; Honshu, Tyuzenzi; 22 June 1932; S. Issiki leg.; USNM.

Adelphomyia satsumicola ( Alexander, 1930) (Figs 36 , 37 ). Japan as Limnophila (Tricholimnophila) satsumicola ; • Holotype ♂; slide-mounted; Shiroyama hill, city-oz Kagoshima; 27 April 1929; S. Issiki leg.; USNM; • Paratype ♂; slide-mounted, Shiroyama hill, Kagoshima city; 27 April 1929; S. Issiki leg.; USNM.

Adelphomyia simplicistyla (Alexander, 1940 b) (Figs 38 , 39 ). China as Limnophila simplicistyla ; • Holotype ♂; slide-mounted; Szechwan [Sichuan], Omei , Nwa Ien Ting Temple ; alt. 1981 m; 15 June 1938; Tsen leg.; USNM.

Figures

Figures 40–43. Adelphomyia jejuana Podenas, sp. nov., holotype, male 40 general view 41 wing 42 genitalia, dorsal view 43 aedeagal complex, lateral view. Abbreviations: interb – interbase; ppm – posterior part of paramere.

Figures 44–46. Adelphomyia jejuana Podenas, sp. nov., paratype, female 44 general view 45 wing 46 ovipositor, lateral view.

Figures 47–50. Sampling localities of Korean Adelphomyia 47 A. acicularis bidens Savchenko, 1983 48 A. flavella (Alexander, 1920) 49 A. punctum (Meigen, 1818) 50 A. jejuana Podenas, sp. nov.

Figures 1–3. Adelphomyia acicularis acicularis (Alexander, 1954), male 1 wing, paratype 2 fragment of antennal flagellum, paratype 3 genitalia, dorsal view, holotype. Abbreviations: A 1 – first branch of anal vein; aed – aedeagus; an lb – anal lobe; arc – arculus; bm – basal medial cell; C – costal vein; CuA – anterior branch of cubital vein; CuP – posterior branch of cubital vein; dm – discal medial cell; ep – epandrium (ninth tergite); gonx – gonocoxite; h – humeral vein; i gonst – inner gonostylus; M – medial vein, or media; M 1 – first branch of media; M 2 – second branch of media; M 3 – third branch of media; M 4 – fourth branch of media; m-cu – medial-cubital cross-vein; m-m – medial cross-vein; o gonst – outer gonostylus; R – radius, or radial vein; R 1 – anterior branch of radius; R 2 – second branch of radius; R 2 + 3 + 4 – stem of radial branches R 2, R 3 and R 4; R 3 – lower branch of second branch of radius; R 4 – upper branch of third branch of radius; R 5 – lower branch of third branch of radius; r-m – radio-medial cross-vein; Rs – radial sector; Sc – subcostal vein; sc-r – subcostal-radial cross-vein.

Figures 9–11. Adelphomyia biacus (Alexander, 1954), male, holotype 9 wing 10 antenna 11 genitalia, dorsal view.

Figures 12–14. Adelphomyia breviramus (Alexander, 1924), male 12 wing, holotype 13 head, dorsal view 14 genitalia, dorsal view, holotype.

Figures 15, 16. Adelphomyia caesiella (Alexander, 1929), male 15 wing 16 genitalia, dorsal view.

Figures 24–26. Adelphomyia pilifer (Alexander, 1919), male 24 wing, paratype 25 general view 26 genitalia, dorsal view, paratype.

Figures 27, 28. Adelphomyia prionolaboides (Alexander, 1934), male 27 wing 28 genitalia, dorsal view. Abbreviation: interb – interbases.

Figures 34, 35. Adelphomyia saitamae (Alexander, 1920), male 34 wing 35 genitalia, dorsal view.

Figures 36, 37. Adelphomyia satsumicola (Alexander, 1930), male, holotype 36 wing 37 genitalia, dorsal view.

Figures 38, 39. Adelphomyia simplicistyla (Alexander, 1940 b), male, holotype 38 wing 39 genitalia, dorsal view.