HYMENOPTERA: CHALCIDOIDEA), 5 The genus Galeopsomyia Girault by Christer Hansson * & Paul E. Hanson ** Author Hansson, Christer Author Hanson, Paul E. text Taxonomic Monographs on Neotropical Hymenoptera 2023 Oxford, England 2023-09-28 3 1 1 743 http://dx.doi.org/10.5281/zenodo.8372023 journal article 10.5281/zenodo.8372024 978-1-7397467-2-8 2754-9844 D833085E-4DB3-48D3-964F-A41566442672 Galeopsomyia oasis Hansson sp.nov. ( Figs 546, 547 , 1102) Diagnosis (female). Antenna with a weak constriction between C1 and C2 (Fig. 1102); genal carina present; mesoscutellum ( Fig. 546 ) with weak reticulation on median part and without median groove, lateral parts with strong reticulation, meshes elongate, submedian grooves ±distinct, straight and diverging towards posterior part; dorsellum with median carina; propodeum ( Fig. 546 ) with some irregular carinae medially and with strong reticulation, callus with three setae; gaster ( Fig. 546 ) 2.0× as long as wide, medio-basal Gt1 with longitudinal carinae laterally, tergites with strong reticulation. Female holotype : length of body 2.0mm ( paratype 2.1mm ). Scape yellowish-brown, pedicel and flagellum dark brown. Head with frons metallic bluish-green, clypeus dark brown, antennal scrobes black; vertex metallic bluish-purple. Thoracic dorsum metallic bluish-green. Legs with fore and hind coxae black with metallic tinges, mid coxa pale brown; trochanters yellowish-brown; femora yellowish-brown, hind femur with basal half dark brown; tibiae yellowish-brown; T1–3 yellowish-brown, T4 brown. Petiole black. Gaster with Gt1 metallic bluish-green, Gt2-4 golden-purple, Gt5 golden-purple on median part and bluish-green laterally, Gt6-7 metallic bluish-green; gonoplac dark brown. Antenna with a weak constriction between C1 and C2. Face below level of toruli with weak reticulation, clypeus smooth, frons rugose, antennal scrobes with weak reticulation; with genal carina. Vertex with strong reticulation outside ocellar triangle, with wrinkled sculpture inside ocellar triangle; with a carina between posterior ocelli in posterior part. Mesoscutum with strong reticulation, meshes isodiametric on sidelobes, elongate on midlobe; midlobe with a indistinct median groove in posterior half, and with 11 scattered adnotaular setae. Mesoscutellum with weak reticulation on median part and without median groove, lateral parts with strong reticulation, meshes elongate; submedian grooves ±distinct, straight and diverging towards posterior part; with nine setae scattered over lateral parts. Dorsellum with weak sculpture, with median carina. Propodeum with a strong median carina that is gradually expanding towards posterior part; with some irregular carinae medially, and with 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; medio-basal Gt 1 with longitudinal carinae laterally; tergites with strong reticulation. Relative measurements: head length, dorsal view 22; head length, frontal view 38; POL 9; OOL 6; lateral ocellus diameter 4.5; head width 51; mouth width 14.5; malar space 12; eye length 22.5; scape length 19; scape width 4.5; pedicel+flagellum length 59; pedicel length 7; pedicel width, dorsal view 4.2; F1 length 9; F1 width 4; F2 length 10.5; F2 width 4.5; F3 length 9.5; F3 width 5; clava length 20; clava width 6; C3 length 7; spicule length 2; mesosoma length 65; mesosoma width 48; midlobe of mesoscutum length 25.5; mesoscutellum length 24; mesoscutellum width 24; median part of mesoscutellum width (measured medially) 9.5; median part of mesoscutellum, width in anterior part 9; median part of mesoscutellum, width in posterior part 11.5; lateral part of mesoscutellum, width (measured medially) 4.5; dorsellum length 2.5; propodeum length 11.5; costal cell length 34; costal cell width (measured at widest part) 3; marginal vein length 31; stigmal vein length 12; gaster length 79; gaster width 40; Gt 2 length (measured medially) 7.5; Gt 4 length (measured medially) 14; Gt 7 length (measured medially) 7; Gt 7 width (measured at base) 10.5; longest cercal seta length 11; shortest cercal seta length 4. Male. Unknown. Hosts . Unknown. Distribution . Costa Rica . Material examined. Holotype ♀ COSTA RICA , Puntarenas , Monteverde , “Ecological Farm”, 10º18’N , 84º49’W , 1300m , 16-17.ii.2003 , J.S. Noyes ( NHMUK ) . Paratype : 1♀ with same label data as holotype ( MZLU ) .