Geloemyia stylata Hendel, 1908

Korneyev, V. A., 2015, Review Of The Genus Geloemyia (Diptera, Pyrgotidae), With Discussion Of Its Taxonomic Position, Vestnik Zoologii 49 (6), pp. 497-518 : 513

Geloemyia stylata Hendel, 1908 (fig. 6, 14, 19, 78–87)

Hendel 1908: 151; 1909: 21; Steyskal, 1977: 41; Shi, 1996: 6.

M a t e r i a l. Type. Holotype ♀ Geloemyia stylata : [ Vietnam:] “ Tonkin / Montes, Marson / April, Mai, 2–3000’ / H. Fruhstorfer ” [printed label], “ Geloemyia / stylata, Hend. / ♀”, “Holotype ♀ / Geloemyia / stylata / Hend. / des. V. Korneyev 2006” ( NHMW).

B r i e f r e d e s c r i p t i o n. This species can be recognized from combination of the head with narrow parafacial in its dorsal part approximately as long as flagellomere 1 width; face slightly receding, with ventral portions of antennal grooves slightly protruding, and peristomal cavity nearly as long as eye horizontal diameter; ocellar seta as long as anterior frontal setulae; wing gray microtrichose, with a pattern consisting of five dark brown spots on anteriorior margin and apical band from the apex of cell r1 to the apex of cell m, and four pale brown oval spots in cells r 2+3 and r 4+5 (one on crossvein r-m and three distally of it); vein R 2+3 without stump vein; vein R 4+5 setulose dorsally; crossvein dm-cu oblique, forming angle c. 45° with vein CuA 1, pale brownish shaded; mesonotum with no presutural and sockets of at least 2 postsutural dorsocentral setae (all dorsocentrals broken off); scutellum with 2 strong black setae at left, 3 setae at rightside and no marginal setulae; female fore tarsus with unmodified trapezoid preapical, and apical tarsomere as long as wide, densely setulose, with setulae as long as tarsomere itself, with claw 0.6 times an long as apical fore tarsomere width; female mid femur without femoral organ; oviscape 1.1× as long as preabdominal tergites combined, its apex with numerous fine and long periapical setae (dorsolateral and lateral setae longer and denser than ventral setae) (fig. 19), but without stout lateroventral setae.

Genitalia not dissected.

Male unknown.

Wing length 5.5 mm.

R e m a r k s. The holotype ♀ of G. stylata , the type species of Geloemyia , is in rather fair condition, having partly deformed (compressed) head, scutum with a big hole in posterior part of scutum, setae partly broken off and the wings partly damaged (fig. 77, 78; 80, 81). It is similar to G. quadriseta in the wing pattern and lacking the femoral organ, clearly differing by the unmodified last tarsomere of female fore leg. Presence of an intermediate scutellar seta on the right side of scutellum is obviously of a teratologic origin, as the left side has the normal two setae (fig. 85). However, Hendel (1934) considered its abnormal number of setae a character of the genus, and established a new genus Parageloemyia for the species with two pairs of scutellar setae. Otherwise, there is no essential characters to recognize them as belonging to different genera.