Galeopsomyia bimaculata Hansson & Hanson 2023, sp.nov.

Galeopsomyia bimaculata Hansson sp.nov.

(Figs 306, 307, 763, 964)

Diagnosis (female). Antenna with a weak constriction between C1 and C2 (Fig. 763); with a weak genal carina; mesoscutellum (Fig. 306) with submedian grooves strong and diverging towards posterior part, median part with strong reticulation, and with median groove indicated; dorsellum with a weak but complete median carina; propodeum (Fig. 306) with strong irregular carinae and strong reticulation, callus with three setae; petiole transverse with strong sculpture on dorsal part; gaster (Fig. 306) 2.1× as long as wide; fore wing (Fig. 307) with two infuscate spots, one spot around and below stigmal vein and one weaker spot at upper-apical margin of fore wing; body dark brown to black with weak metallic tinges (Figs 306, 307). Male with C2 enlarged (Fig. 964), and with same infuscate spots in fore wing as female.

Female holotype: length of body 1.7mm (paratypes 1.4–1.7mm).

Scape yellowish-brown, pedicel and flagellum dark brown. Head dark brown to black. Mesosoma black. Legs with fore and hind coxae black, mid coxa dark brown; trochanters pale brown; femora dark brown; tibiae yellowish-brown, hind tibia with basal one-third brown; T1–3 yellowish-brown to yellowish-white, T4 brown. Wings hyaline with one infuscate spot below stigmal vein and one spot on apicodorsal margin. Petiole black. Gaster dark brown to black; gonoplac black.

Antenna with a weak constriction between C1 and C2. Frons with strong reticulation, clypeus smooth, antennal scrobes with weak reticulation; with a weak genal carina. Vertex with strong reticulation; with a carina between posterior ocelli in posterior part.

Mesoscutum with strong reticulation, meshes isodiametric on sidelobes, elongate on midlobe; midlobe with a median groove in posterior half, with eight adnotaular setae in two rows. Mesoscutellum with strong reticulation, meshes elongate; with median groove indicated; submedian grooves distinct, straight and diverging slightly towards posterior part; with three setae on lateral parts. Dorsellum with weak sculpture, with median carina. Propodeum with a wide median carina that expands in posterior part, this part concave; with strong irregular carinae and strong reticulation; callus with three setae. Fore and hind coxae with strong reticulation, mid coxa with weak reticulation. Fore wing with four setae on dorsal surface of submarginal vein; speculum closed; costal setal row unbroken.

Petiole transverse with strong sculpture on dorsal part. Gaster ovate-elongate; tergites with strong reticulation.

Relative measurements: head length, dorsal view 18; head length, frontal view 30; POL 7.8; OOL 5.5; lateral ocellus diameter 3; head width 40; mouth width 14; malar space 10; eye length 18; scape length 15.5; scape width 3; pedicel+flagellum length 39; pedicel length 7; pedicel width, dorsal view 3; F1 length 5.5; F1 width 3; F2 length 5; F2 width 3; F3 length 5.5; F3 width 3; clava length 15; clava width 4; C3 length 5; spicule length 1.5; mesosoma length 50; mesosoma width 35; midlobe of mesoscutum length 19; mesoscutellum length 19; mesoscutellum width 16; median part of mesoscutellum width (measured medially) 7.5; median part of mesoscutellum, width in anterior part 8.5; median part of mesoscutellum, width in posterior part 9; lateral part of mesoscutellum, width (measured medially) 3.5; dorsellum length 2; propodeum length 7; costal cell length 29; costal cell width (measured at widest part) 2; marginal vein length 28; stigmal vein length 9; gaster length 73; gaster width 35; Gt 2 length (measured medially) 7; Gt 4 length (measured medially) 16; Gt 7 length (measured medially) 11; Gt

7 width (measured at base) 11; longest cercal seta length 10; shortest cercal seta length 5.

Male. Length of body of body 1.4mm.

Antenna (Fig. 964) with scape gradually expanding towards apex; plaque dark brown and situated in apical three-quarters; dorso-basal whorls of short setae present on F1–F4, and one ventro-basal whorl on C1; antenna with C2 enlarged. Gaster long ovate. Otherwise as in female.

Relative measurements: head length, dorsal view 16; head length, frontal view 28; head width 36; mouth width 12; malar space 9; eye length 17; scape length 16; scape width 6; plaque length 11; pedicel length 6.5; pedicel+flagellum length 43; F1 length 4.5; F1 width 3; F2 length 4.5; F2 width 3; F3 length 5; F3 width 3; F4 length 5; F4 width 3; clava length 17; clava width 3; mesosoma length 46; mesosoma width 30; gaster length 52; gaster width 26; longest subbasal seta on F1, length 7.

Hosts. Unknown.

Distribution. Costa Rica.

Material examined.

Holotype ♀ COSTA RICA, Puntarenas, San Vito, Las Cruces, 8º47’N, 82º58’W, 1000-1300m, 7-19.ii.2007, C. Hansson (MZLU). Paratypes (4♀ 3♂, MZLU, MZUCR, NHMUK): 1♀ 1♂ with same label data as holotype; 1♂ COSTA RICA, Puntarenas, Estación Altamira, Sendero Los Gigantes, 9º02’N, 83º00’W, 1450m, 7.ii-5.iii, 2002, C. Hansson & parataxonomos; 1♀ COSTA RICA, Alajuela, 5km W San Ramón, 1200m, x.1996, O. Castro & P. Hanson; 2♀ 1♂ COSTA RICA, Alajuela, 5km W San Ramón on Route 1, 1200m, xii.1996, P. Hanson.

Etymology. From the Latin bi = two, and macula = spot, referring to infuscate spots in the fore wing.