Galeopsomyia bestis Hansson & Hanson 2023, sp.nov.

Galeopsomyia bestis Hansson sp.nov.

(Figs 302, 303, 754)

Diagnosis (female). Antennal clava with a weak constriction between C1 and C2 (Fig. 754); genal carina present; mesoscutellum (Fig. 302) with very weak reticulation on median part and shiny, lateral parts with strong reticulation, meshes elongate, submedian grooves distinct, straight and diverging slightly towards posterior part, with a weak median groove in anterior three-quarters; dorsellum without median carina; propodeum (Fig. 302) with strong reticulation and a few strong carinae, callus with four setae; gaster (Fig. 302) short ovate, 1.8× as long as wide, medio-basal Gt1 with longitudinal carinae laterally, tergites with strong reticulation; body black with metallic blue tinges (Figs 302, 303).

Female holotype: length of body 1.6mm.

Scape yellowish-brown, pedicel pale brown, flagellum dark brown. Head black with metallic blue tinges, clypeus dark brown. Mesoscutum black with metallic purple tinges, midlobe, mesoscutellum and propodeum black with metallic blue tinges. Legs with fore and mid coxae dark brown, hind coxa black; femora dark brown; trochanters, tibiae and tarsi yellowish-brown, T4 pale brown. Gaster with Gt1-5 dark brown, Gt6-7 black.

Antennal clava with a weak constriction between C1 and C2. Face below level of toruli with weak reticulation, clypeus smooth, frons with strong reticulation, scrobes with weak reticulation; with genal carina. Vertex with weak reticulation outside ocellar triangle, inside ocellar triangle rugose.

Mesoscutum with strong reticulation, meshes isodiametric on sidelobes, elongate on midlobe; midlobe with a weak median groove in posterior half, with 12 scattered adnotaular setae. Mesoscutellum with very weak reticulation on median part and shiny, lateral parts with strong reticulation, meshes elongate; submedian grooves distinct, straight and diverging slightly towards posterior part, with a weak median groove in anterior three-quarters; with six setae scattered over lateral parts. Dorsellum with strong sculpture, without median carina. Propodeum with a narrow median carina; with a few irregular carinae and strong reticulation; callus with four setae. Fore and mid coxae with weak reticulation and shiny, hind coxa with strong reticulation. Fore wing with 3&4 setae on dorsal surface of submarginal vein; speculum closed; costal setal row unbroken.

Petiole not visible. Gaster short ovate; medio-basal Gt 1 with longitudinal carinae laterally; tergites with strong reticulation.

Relative measurements: head length, dorsal view 18; head length, frontal view 28; POL 8; OOL 5.5; lateral ocellus diameter 4; head width 42; mouth width 14; malar space 11; eye length 18; scape length 15; scape width 3.5; pedicel+flagellum length 45; pedicel length 5.5; pedicel width, dorsal view 3.5; F1 length 6.5; F1 width 4; F2 length 7.5; F2 width 4; F3 length 7; F3 width 4; clava length 16.5; clava width 4; C3 length 5.5; spicule length 2; mesosoma length 52; mesosoma width 36; midlobe of mesoscutum length 19; mesoscutellum length 18.5; mesoscutellum width 16.5; median part of mesoscutellum width (measured medially) 6.5; median part of mesoscutellum, width in anterior part 6; median part of mesoscutellum, width in posterior part 8; lateral part of mesoscutellum, width (measured medially) 3.5; dorsellum length 2; propodeum length 8.5; costal cell length 23; costal cell width (measured at widest part) 1.6; marginal vein length 26; stigmal vein length 8; gaster length 63; gaster width 36; Gt 2 length (measured medially) 8; Gt 4 length (measured medially) 14; Gt 7 length (measured medially) 4; Gt 7 width (measured at base) 10; longest cercal seta length 12; shortest cercal seta length 5.

Male. Unknown.

Hosts. Unknown.

Distribution. Costa Rica.

Material examined.

Holotype ♀ COSTA RICA, Puntarenas, Estación Altamira, Sendero Los Gigantes, 9º02’N, 83º00’W, 1450m, 7.ii-5.iii.2002, C. Hansson & Parataxonomos (MZLU).