Galeopsomyia truncata Hansson & Hanson 2023, sp.nov.

Galeopsomyia truncata Hansson sp.nov.

(Figs 610, 611, 876, 995)

Diagnosis (female). Antenna with a weak to distinct constriction between C1 and C2 (Fig. 876); genal carina present; mesoscutellum (Fig. 610) with weak reticulation on median part, lateral parts with strong reticulation, meshes elongate, submedian grooves distinct, straight and parallel; dorsellum with weak median carina; propodeum (Fig. 610) with strong reticulation, callus with four setae; fore and mid coxae dark brown, hind coxa metallic (Fig. 611); petiole transverse with strong sculpture on dorsal part; gaster (Fig. 610) 1.9× as long as wide, medio-basal Gt1 with several longitudinal short carinae, tergites with strong reticulation, tip of gonoplac abruptly cut off and blunt (Fig. 611).

Female holotype: length of body 1.9mm (paratypes 1.4–2.0mm).

Scape yellowish-brown, pedicel brown, flagellum dark brown. Head, mesosoma and gaster black. Legs with coxae dark brown to black; trochanters yellowish-brown; femora dark brown with apex yellowish-brown; tibiae and tarsi yellowish-brown.

Antenna with a weak to distinct constriction between C1 and C2. Frons with strong reticulation, clypeus smooth, antennal scrobes with weak reticulation; with 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 scattered adnotaular setae. Mesoscutellum with weak reticulation on median part, lateral parts with strong reticulation, meshes elongate; submedian grooves distinct, straight and parallel; with seven setae scattered over lateral parts. Dorsellum with strong reticulation, with a weak median carina. Propodeum with a wide median carina that expands anteriorly and posteriorly and with expanded parts concave; with strong reticulation; callus with four 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 small and closed; costal setal row unbroken.

Petiole transverse with strong sculpture on dorsal part. Gaster ovate; medio-basal Gt 1 with several longitudinal short carinae; tergites with strong reticulation; tip of gonoplac blunt.

Relative measurements: head length, dorsal view 21; head length, frontal view 35; POL 9.5; OOL 7.5; lateral ocellus diameter 3.5; head width 47; mouth width 11; malar space 14; eye length 17.5; scape length 16.5; scape width 4; pedicel+flagellum length 49; pedicel length 5.5; pedicel width, dorsal view 3.5; F1 length 6; F1 width 4; F2 length 8; F2 width 4; F3 length 7; F3 width 4; clava length 19; clava width 4.5; C3 length 7; spicule length 2.5; mesosoma length 61; mesosoma width 41; midlobe of mesoscutum length 21.5; mesoscutellum length 22; mesoscutellum width 20; median part of mesoscutellum width (measured medially) 7.5; median part of mesoscutellum, width in anterior part 8; median part of mesoscutellum, width in posterior part 8; lateral part of mesoscutellum, width (measured medially) 3.5; dorsellum length 4; propodeum length 10.5; costal cell length 31; costal cell width (measured at widest part) 2; marginal vein length 31; stigmal vein length 9.5; gaster length 69; gaster width 36; Gt 2 length (measured medially) 8; Gt 4 length (measured medially) 10; Gt 7 length (measured medially) 7; Gt

7 width (measured at base) 14; longest cercal seta length 9; shortest cercal seta length 5.

Male. Length of body 1.4–1.9mm.

Antenna (Fig. 995) with plaque on scape dark brown and situated below apex of scape; dorso-basal whorls of long setae present on F1–F4 and on C1, C1 also with a ventro-basal whorl of long setae. Gaster long ovate. Otherwise as in female.

Relative measurements: head length, dorsal view 20; head length, frontal view 37; head width 49; mouth width 13; malar space 15; eye length 19; scape length 18; scape width 5.5; plaque length 6; pedicel length 6; pedicel+flagellum length 70; F1 length 5; F1 width 4; F2 length 7; F2 width 4; F3 length 10.5; F3 width 3.5; F4 length 12; F4 width 3.5; clava length 26.5; clava width 3.5; mesosoma length 66; mesosoma width 45; gaster length 70; gaster width 36; longest subbasal seta on F1, length 26.

Hosts. Unknown.

Distribution. Costa Rica.

Material examined.

Holotype ♀ COSTA RICA, Puntarenas, San Vito, Estación Biológica Las Alturas, 8°57’N, 82°50’W, 1500m, 17-18.ii.2012, J.S. Noyes (NHMUK). Paratypes (10♀ 4♂, CNC, MZLU, MZUCR, NHMUK): 7♀ 3♂ COSTA RICA, Puntarenas, Estación Altamira, Sendero Los Gigantes, 9º02’N, 83º00’W, 1450m, 7.ii-5.iii.2002, swept, C. Hansson & Parataxonomos; 3♀ 1♂ COSTA RICA, Puntarenas, Estación Al-tamira, Sendero Casa Coca, 9º02’N, 83º00’W, 1450-1700m, 7.ii-5.iii.2002, C. Hansson & Parataxonomos.

Etymology. From the Latin truncus = cut off, referring to tip of gonoplac abruptly cut off and blunt.