Galeopsomyia osmia Hansson & Hanson 2023, sp.nov.

Galeopsomyia osmia Hansson sp.nov.

(Figs 562, 563, 1084)

Diagnosis (female). Antennal clava with distinct constriction between C1 and C2 (Fig. 1084); genal carina present; mesoscutellum (Fig. 562) with very weak reticulation on median part and without a median groove, lateral parts with strong reticulation, meshes elongate, submedian grooves with outer margin indistinct, with transverse carinae, curved and diverging towards posterior part from the middle of mesoscutellum; dorsellum with median carina; propodeum (Fig. 562) with strong irregular carinae in median part, laterally with reticulation, callus with two setae; petiole transverse, dorsal part with strong sculpture; gaster (Fig. 562) 2.8× as long as wide, medio-basal Gt1 with longitudinal carinae, Gt1-2 with weak reticulation, Gt3-7 with strong reticulation.

Female holotype: length of body 2.5mm.

Scape yellowish-brown in basal half, dark brown in apical half, pedicel and flagellum dark brown. Head with frons metallic bluish-green, clypeus dark brown, scrobes black; vertex black with metallic bluish-green tinges. Mesoscutum golden-green; mesoscutellum metallic bluish-green, propodeum black with metallic bluish-green tinges. Legs with fore and mid coxae dark brown, hind coxa black; trochanters and tibiae yellowish-brown; femora yellowish-brown with basal half pale brown; T1–3 yellowish-brown, T4 pale brown. Petiole black. Gaster with Gt1 metallic bluish-green, Gt2-4 golden-purple, Gt5-7 black with metallic tinges; gonoplac black.

Antenna with distinct constriction between C1 and C2. Face below level of toruli with weak reticulation, clypeal area smooth, frons rugose, scrobes with weak reticulation; with genal carina. Vertex with strong reticulation outside ocellar triangle, with wrinkled sculpture inside ocellar triangle.

Mesoscutum with strong reticulation, meshes isodiametric on sidelobes, elongate on midlobe, with parts close to notauli rugose; midlobe with a very weak median groove in posterior half, with 12 scattered setae on rugose parts. Mesoscutellum with very weak reticulation on median part and without a median groove, lateral parts with strong reticulation, meshes elongate; submedian grooves with outer margin indistinct, with transverse carinae, curved and diverging towards posterior part from the middle of mesoscutellum; with eight setae scattered over lateral parts. Dorsellum with weak sculpture, with median carina. Propodeum with a strong median carina that expands posteriorly; median part with strong irregular carinae and laterally with reticulation; callus with two setae. Fore and hind coxae with strong reticulation, mid coxa with weak reticulation. Fore wing with five setae on dorsal surface of submarginal vein; speculum closed; costal setal row unbroken.

Petiole transverse, dorsal surface with strong sculpture. Gaster elongate; medio-basal Gt 1 with two longitudinal carinae; Gt 1-2 with weak reticulation, Gt 3-7 with strong reticulation.

Relative measurements: head length, dorsal view 23; head length, frontal view 39; POL 10.5; OOL 7; lateral ocellus diameter 5; head width 52; mouth width 14; malar space 15; eye length 22; scape length 19; scape width 4.5; pedicel+flagellum length 63; pedicel length 6.5; pedicel width, dorsal view 4.5; F1 length 10; F1 width 6; F2 length 10.5; F2 width 6; F3 length 10; F3 width 6; clava length 23; clava width 6; C3 length 7; spicule length 2; mesosoma length 74; mesosoma width 47; midlobe of mesoscutum length 29; mesoscutellum length 27.5; mesoscutellum width 20; median part of mesoscutellum width (measured medially) 6.5; median part of mesoscutellum, width in anterior part 8; median part of mesoscutellum, width in posterior part 10; lateral part of mesoscutellum, width (measured medially) 4; dorsellum length 5.5; propodeum length 12.5; costal cell length 35; costal cell width (measured at widest part) 2.5; marginal vein length 43; stigmal vein length 13; gaster length 106; gaster width 38.5; Gt 2 length (measured medially) 10; Gt 4 length (measured medially) 14; Gt 7 length (measured medially) 15; Gt 7 width (measured at base) 15; longest cercal seta length 14; shortest cercal seta length 6.

Male. Unknown.

Hosts. Unknown.

Distribution. Costa Rica.

Material examined. Holotype ♀ COSTA RICA, Cartago, Tapantí, 1100-1200m, iv.2011 - ii.2012, R. Zuñiga (NHMUK).