Galeopsomyia actis Hansson sp.nov.

(Figs 246, 247, 733)

Diagnosis (female). Antenna with a weak constriction between C1 and C2 (Fig. 733); genal carina present and strong; mesoscutellum (Fig. 246) with strong reticulation with elongate meshes, submedian grooves ±distinct but with outer margin weak, slightly curved and diverging towards posterior part, with a complete and strong median groove; dorsellum without median carina; propodeum (Fig. 246) with strong reticulation, callus with four setae; gaster (Fig. 246) 2.5× as long as wide with apex pointed, medio-basal Gt 1 with a sharp transverse edge dorsally and with longitudinal carinae behind transverse edge in lateral parts, tergites with weak reticulation.

Female holotype: length of body 2.3mm (paratype 2.4mm).

Scape yellowish-brown, pedicel brown, flagellum dark brown. Head with frons golden-green with scrobes black with metallic tinges and clypeus dark brown; vertex golden-green. Mesoscutum with sidelobes and parts of midlobe close to notauli golden-green, median part of midlobe black with metallic tinges. Legs with fore and mid coxae dark brown with metallic tinges, hind coxa golden-green; trochanters yellowish-brown; femora dark brown with apical part yellowish-white; tibiae and tarsi yellowish-white, T4 pale brown. Petiole black. Gaster with Gt 1 golden-green with hind margin metallic purple, Gt 2-4 metallic purple, Gt 5-7 black; gonoplac black.

Antenna with a weak constriction between C1 and C2. Frons with strong reticulation, clypeus smooth, scrobes with weak reticulation; with a strong genal carina that reaches almost to level of lower margin of eyes. Vertex with strong reticulation outside ocellar triangle, with wrinkled sculpture inside ocellar triangle; occipital margin rounded.

Mesoscutum with strong reticulation, meshes isodiametric on sidelobes, elongate on midlobe; midlobe with median groove indicated but indistinct in posterior half, with about 10 adnotaular setae (difficult to see as they are dark) ±in two rows. Mesoscutellum with strong reticulation with elongate meshes; submedian grooves ±distinct but with outer margin weak, grooves slightly curved and diverging towards posterior part; with a complete and strong median groove; with six setae scattered over lateral parts. Dorsellum with strong reticulation, without median carina. Propodeum with a strong median carina that expands in posterior part; with strong reticulation; callus with four setae. Fore and mid coxae with weak reticulation, hind coxa with strong reticulation. Fore wing with 4&5 setae on dorsal surface of submarginal vein; speculum closed; costal setal row broken.

Petiole very short, just a narrow band. Gaster elongate; medio-basal Gt 1 with a sharp transverse edge dorsally and with longitudinal carinae behind transverse edge in lateral parts; tergites with weak reticulation.

Relative measurements: head length, dorsal view 23; head length, frontal view 39; POL 10; OOL 6; lateral ocellus diameter 4; head width 52; mouth width 14.5; malar space 15; eye length 22.5; scape length 17.5; scape width 4; pedicel+flagellum length 55; pedicel length 7; pedicel width, dorsal view 4; F1 length 8.5; F1 width 5; F2 length 9; F2 width 5; F3 length 8.5; F3 width 5; clava length 20.5; clava width 5.5; C3 length 5.5; spicule length 1.5; mesosoma length 67; mesosoma width 46; midlobe of mesoscutum length 29; mesoscutellum length 25; mesoscutellum width 20; median part of mesoscutellum width (measured medially) 9; median part of mesoscutellum, width in anterior part 9; median part of mesoscutellum, width in posterior part 10; lateral part of mesoscutellum, width (measured medially) 4.5; dorsellum length 3; propodeum length 10; costal cell length 35; costal cell width (measured at widest part) 3; marginal vein length 34; stigmal vein length 10; gaster length 103; gaster width 41; Gt 2 length (measured medially) 11; Gt 4 length (measured medially) 15; Gt 7 length (measured medially) 17; Gt 7 width (measured at base) 11; longest cercal seta length 14; shortest cercal seta length 6.

Male. Unknown.

Hosts. Unknown.

Distribution. Costa Rica.

Material examined.

Holotype ♀ COSTA RICA, Puntarenas, Estación Altamira, Estación, 9º02’N, 83º00’W, 1450m, 7.ii-5.iii.2002, swept, C. Hansson & Parataxonomos (MZLU) . Paratype: 1♀ COSTA RICA, Puntarenas, San Vito, Las Cruces, 8º47’N, 82º58’W, 1000-1300m, 7-19.ii.2007, C. Hansson (NHMUK) .