Galeopsomyia ibis Hansson sp.nov.

(Figs 128, 129, 1021)

Diagnosis (female). Antennal clava with weak constrictions between clavomeres (Fig. 1021); with a short genal carina close to mouth opening; mesoscutellum (Fig. 128) with isodiametric meshes; hind coxa with a short carina along posterior margin close to base; petiole transverse and shiny on dorsal surface; gaster (Fig. 128) 3.1× as long as wide, Gt 2 0.24× as long as Gt 4, medio-basal Gt 1 with rectangular incision, shiny with weak reticulation and with upper margin smoothly rounded, remaining tergites with strong reticulation.

Female holotype: length of body 3.0mm.

Scape dark yellowish-brown with dorsal edge dark brown, pedicel and flagellum dark brown. Head metallic bluish-green, antennal scrobes black, clypeus dark brown. Mesoscutum and mesoscutellum metallic bluish-green, propodeum golden-green. Legs with fore and hind coxae golden-green, mid coxa dark brown with metallic tinges; trochanters dark brown; fore and hind femora golden-green, mid femur dark brown with metallic tinges, apex yellowish-brown; tibiae yellowish-brown; T1–3 yellowish-brown, T4 brown. Petiole black. Gaster with Gt 1,2,6 metallic bluish-green, Gt 3-5 and apex of Gt 7 black; gonoplac black.

Antennal clava with weak constrictions between clavomeres. Frons with strong reticulation, clypeus smooth; with a short genal carina close to mouth opening. Vertex with strong reticulation.

Mesoscutum with strong reticulation, meshes isodiametric on sidelobes, elongate on midlobe; midlobe without median groove, with seven setae in one row close to notauli. Mesoscutellum with strong reticulation, meshes isodiametric; without median groove; submedian grooves indistinct, wide apart, slightly curved and diverging towards posterior part. Dorsellum with strong reticulation. Propodeum with a strong triangular median carina with concave upper surface; callus with two setae. Fore and hind coxae with strong reticulation, mid coxa with weak reticulation; hind coxa with a short carina along posterior margin close to base. Fore wing with three setae on dorsal surface of submarginal vein; speculum open towards base of wing; costal setal row unbroken.

Petiole transverse and shiny on dorsal part. Gaster elongate; medio-basal Gt 1 with rectangular incision, with weak reticulation and shiny, remaining tergites with strong reticulation.

Relative measurements: head length, dorsal view 25; head length, frontal view 45; POL 13; OOL 7; lateral ocellus diameter 4; head width 57; mouth width 17; malar space 18; eye length 24; scape length 20; scape width 4.5; pedicel+flagellum length 56; pedicel length 8.5; pedicel width, dorsal view 4; F1 length 10; F1 width 5; F2 length 8.5; F2 width 5.5; F3 length 8; F3 width 6; clava length 18.5; clava width 7; C3 length 7; spicule length 2; mesosoma length 85; mesosoma width 58; midlobe of mesoscutum length 36; mesoscutellum length 32; mesoscutellum width 30; median part of mesoscutellum width (measured medially) na; median part of mesoscutellum, width in anterior part na; median part of mesoscutellum, width in posterior part na; lateral part of mesoscutellum, width (measured medially) na; dorsellum length 3; propodeum length 13; costal cell length 46; costal cell width (measured at widest part) 3.5; marginal vein length 43; stigmal vein length 12.5; gaster length 148; gaster width 48; Gt 2 length (measured medially) 10; Gt 4 length (measured medially) 41; Gt 7 length (measured medially) 16; Gt 7 width (measured at base) 16; longest cercal seta length 11; shortest cercal seta length 7.

Male. Unknown.

Hosts. Unknown.

Distribution. Costa Rica.

Material examined.

Holotype ♀ COSTA RICA, San José, Zurqui de Moravia, 10º02’58’’N, 84º00’57’’W, 1600m, ii.1995, P. Hanson (NHMUK).