Geloemyia cheni Kim, Han & Korneyev, 2015

Korneyev, V. A., 2015, Review Of The Genus Geloemyia (Diptera, Pyrgotidae), With Discussion Of Its Taxonomic Position, Vestnik Zoologii 49 (6), pp. 497-518 : 502-505

Geloemyia cheni Kim, Han & Korneyev , sp. n. (fig. 7, 15, 20, 23–28)

nigrofasciata: Chen, 1947: 55 ; Shi, 1996: 577; Kim, Han, 2001: 281 ( Parageloemyia ) (misidentification).

Material. Type. Holotype ♀: Korea: Gangwon-do , Wonju-si , Heungeob-myeon , Mt. Deoggasan , black & mercury vapor light trap, 16.06.1997 (H.-W. Byun) ( YSUW) . Paratypes: Korea: 2 ♀, labels as in the holotype ( NHMG); 1 ♂, 1 ♀: Gangweon-do, Weonju-si, Maeji-ri , Yonsei Univ. campus, black+ mercury vapor light trap, 12.06.2000 (S.-K. Kim); 1 ♀: Gyeongsandam-do, Geoje-si, Dongbu-myeon, Mt. Noja , mercury light trap, 4.06.1997, 70 % EtOH to chloroform (D. S. Gu); 1 ♀: Seoul, Jung-gu, Mt. Hamsan , Seoul tower, 3.06.2001 (H.-W. Byun) ( SIZK); other specimens listed by Kim & Han (2001) as “ Parageloemyia nigrofasciata ” are also paratypes .

D i a g n o s i s. This species can be readily distinguished from other species of the genus Geloemyia by the following combination of characters: 1 or, face with epistome 0.3× as high as antennal grooves, the latter entirely fused, vein R 4+5 setulose, female fore tarsus with tarsomeres 4 and 5 widened in female; mid femur with femoral organ in female.

D e s c r i p t i o n (partly modified from Kim, Han, 2001). Body brownish yellow, with reddish yellow to reddish-brown pattern; setae and setulae black; mesonotum length 1.95– 2.55 mm, wing length 5.6–7.6 mm.

Head (fig. 26) reddish yellow, length: height: width ratio = 1: 1.2: 1.3; frons reddish yellow to reddish brown with sparse fine setulae, anteriormost setulae half as long as orbital setae; frons 1.4× as long as wide, 0.36–0.45× as wide as head, gena 0.55–0.63× as high as eye in male and 0.36–0.52× in female; medial vertical seta 1.1–1.4× as long as horizontal diameter of eye; outer vertical seta 0.55–0.65× as long as medial vertical seta in male, 0.47–0.51× in female; postocellar seta 0.37–0.51× as long as medial vertical seta; ocellar seta 0.23–0.43× as long as medial vertical seta; 1 orbital seta: frontal setae absent; antenna yellow to reddish yellow; flagellomere 1 oval, brownish yellow to reddish yellow microtrichose, apically rounded, 1.5× as long as wide, 0.86–1.0× as long as pedicel; first flagellomere; arista short pubescent; eye elliptic 0.63–0.70× as long as high; face pale yellow to reddish yellow; antennal grooves deeply concave, without median carina, 0.74–0.84× as high as face; epistome low, 0.15–0.25× as high as face; gena and postgena reddish yellow; occiput reddish yellow to brownish yellow with short supracervical setae, 1 long postocular seta; all setulae at anterior margin of postgena subequal; mouthparts pale yellow, labellum with yellowish brown setulae, prementum yellow with 2 moderately short setae at each side; palp yellow to reddish yellow, wide and moderately long, 2× as long as wide and almost as wide as flagellomere 1.

Thorax (fig. 21, 31, 32) reddish yellow to brownish yellow with brown to reddishbrown pattern; postpronotal lobe pale yellow to brownish yellow with 1 seta and 4–8 setulae; scutum with 1 presutural supra-alar, 1 scapular seta (scap), 3 postsutural dc, and 1 prst ac seta, and also 1 postsutural supra-alar, 1 intra-alar, 1 postalar and 2 notopleural setae; round dark brown spot ventral of postsutural supra-alar seta; mesonotum with brown or reddish brown lyrate pattern at incertions of dorso-ventral muscles; scutellum pale yellow to brownish yellow, bare; apical scutellar seta 1.8–2.9×, basal scutellar seta 1.6–2.5× as long as scutellum; pleura (fig. 23, 32; Kim, Han, 2001: Fig. 14G ) pale yellow to reddish yellow; proepisternum with 2–7 setae; 1 anepisternal seta and 2–4 long setulae and relatively short setulae in posterior part of anepisternum; 1 katepisternal, 1 anepimeral seta; katepimeron pale yellow to reddish yellow; mediotergite brown.

Legs (fig. 23, 24) pale yellow to brownish yellow; fore coxa as on fig. 33; fore trochanter unmodified, with 3 fine setulae; fore femur brownish yellow with erect setulae, posterodorsally with 3 dorsal setae, postero-ventrally with 4–6 setae shorter than postero-dorsal ones; female fore tarsus modified: tarsomeres 3–5 in female modified: tarsomere 3 wide, 1.5× as wide as tarsomere 2; tarsomere 4 enlarged and asymmetrical, anterior half flattened, short and sparsely setulose on dorsal surface, tarsomere 5 smaller than tarsomere 4, with 6–7 long setulae on anterior margin longer than claws; male fore tarsus unmodified; mid coxa and trochanter unmodified, as on fig. 34; mid femur with short dense setulae, anterodorsally in medial part with large oval femoral organ, almost half as long as femur, and not concave; hind femur with 2–5 apicodorsal setae and long antero-ventral setulae.

Wing of female hyaline with extensive brown banded pattern (fig. 27; Kim, Han, 2001: Fig. 14G ); wing bands broader and darker in males; humeral break present, subcostal break almost inconspicuous; Sc incomplete at C; cells bm and cu p covered with microtrichia; vein R 4+5 setulose dorsally; halter yellow. Wing of male with wide crossbands, similarly to those in G. nigrofasciata holotype (as on fig. 73), but differing in subapical crossband often broken on vein M.

Male abdomen ( Kim, Han, 2001: Figs 14C, D ) yellowish brown, densely setulose, laterally long setulose; syntergite 1+2 1.8× as long as tergites 3–4 combined; tergite 5 0.64– 0.7× as long as syntergite 1+2; sternites 3–4 subquadrate.

Female abdomen (figs 35–37) reddish yellow to brownish yellow; syntergite 1+2 1.54– 2.35× as long as tergites 3–6 combined; tergites 5–6 short, sometimes hidden in dorsal view; sternites 1+2 and 6 trapezoid, sternites 3–5 subrectangular.

Male genitalia ( Kim, Han, 2001: Figs 15 E-H): epandrium dorsally bare, with few laterodorsal setulae; cerci with relatively short sparse setulae; surstylus distinctly protruding postero-ventrally.

Female terminalia: oviscape tapering towards apex ( Kim, Han, 2001: Fig. 15A ) brownish yellow, in apical one-fifth or one-sixth dark brown, with pair of ventrolateral rows of 5–6 slightly thickened and elongated setulae, laterally and dorsally with suberect, unmodified setulae; 1.59–2× as long as preabdominal tergites combined and 1.05–1.1 times as long as thorax; apex black with 3–4 pairs fairly long and stout setae ventrally (fig. 37); aculeus barbed, with conspicuous subapical constriction ( Kim, Han, 2001: Fig. 15B ); 3 smooth oval spermathecae ( Kim, Han, 2001: Fig. 15C ); egg ( Kim, Han, 2001: Fig. 15D ) oblanceolate in outline.

Wing length ♂: 5.8, ♀ 6.4 –6.8

R e m a r k s. As was noted by Hering (1940) and then by Korneyev (2004), Hendel confused the figures of G. quadriseta and G. nigropunctata wings that was resulted in further misidentifications. A female from “Kirin: Kao-lin-tze, 20.VII.1940 … in Museum Heude” identified by Chen (1947: 55) as “ Parageloemyia nigrofasciata ” and depicted ( Chen, 1947: Figs 8, 10 ) clearly belongs here.

Figures

Fig. 11–22. Geloemyia ǫ, three apical right fore tarsomes, dorsal view (11–16) and apex of oviscape, left view (17–22): 11, 17 — G. namibica Korneyev, sp. n.; 12 — G. trifasciata; 13, 18 — G. cockerelli; 14, 19 — G. stylata; 15, 20 — G. cheni, sp. n.; 16, 21 — G. quadriseta; 22 — G. wonjuensis.

Fig.1–10. Geloemyia wings: 1 — G. namibica Korneyev, sp. n.; 2 — G. wonjuensis; 3–4 — G. trifasciata (3 — ǫ, 4 — Ơ); 5 — G. cockerelli; 6 — G. trifasciata holotype ǫ; 7 — G. cheni Kim, Han & Korneyev, sp. n. paratype ǫ; 8–9 — G. quadriseta (8 — syntype ǫ G. quadriseta, syntype ǫ G. ornata); 10 — G. nigrofasciata holotype ǫ; dm — discomedial cel; cua — anterior cubital cell; dm-cu — discal mediocubital crossvein; cua — anterior cubital cell; arrows indicate spurious vein.