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 infusca Hansson sp.nov. ( Figs 426, 427 , 803 , 976 ) Diagnosis (female). Antenna with distinct constriction between C1 and C2 ( Fig. 803 ); genal carina present; mesoscutellum ( Fig. 426 ) with submedian grooves straight and ±parallel, median part with very weak reticulation; dorsellum with median carina; propodeum ( Fig. 426 ) with strong carinae and strong reticulation, callus with two setae; fore coxa pale brown, mid coxa yellow, hind coxa yellow at apex and along anterior part, dark brown along posterior part ( Fig. 427 ); petiole transverse with strong sculpture on dorsal part; gaster ( Fig. 426 ) ovate, 1.5× as long as wide, tergites with strong reticulation, gonoplac short with tip pointed ( Fig. 427 ). Small ( 1.5mm ), predominantly dark brown species ( Figs 426, 427 ). Female holotype : length of body 1.5mm . Scape yellowish-brown, pedicel pale brown, flagellum dark brown. Head dark brown with metallic tinges. Mesoscutum and propodeum dark brown; mesoscutellum dark brown with metallic bluish tinges. Legs with fore coxa pale brown, mid coxa yellow, hind coxa yellow at apex and along anterior part, dark brown along posterior part; trochanters, femora, tibiae and tarsi yellow. Petiole black. Gaster dark brown. Antenna with a distinct constriction between C1 and C2. Frons with strong reticulation, clypeus smooth, antennal scrobes with weak reticulation; with genal carina. Vertex with strong reticulation outside ocellar triangle, with wrinkled sculpture inside ocellar triangle. Occipital margin carinate. Mesoscutum with strong reticulation, meshes isodiametric on sidelobes, elongate on midlobe; midlobe with a median groove, with six adnotaular setae in one row. Mesoscutellum with weak reticulation, especially so on median part, meshes elongate; submedian grooves distinct, straight and ±parallel; with three setae scattered over lateral parts. Dorsellum with weak sculpture, with median carina. Propodeum with a wide median carina that expands in posterior part; with strong irregular carinae and strong reticulation; callus with two 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; tergites with strong reticulation; gonoplac short with tip pointed. Relative measurements: head length, dorsal view 17; head length, frontal view 32; POL 7.5; OOL 5.5; lateral ocellus diameter 3.5; head width 41; mouth width 11.5; malar space 19.5; eye length 19; scape length 14; scape width 3.5; pedicel+flagellum length 47; pedicel length 5.5; pedicel width, dorsal view 3.5; F1 length 7; F1 width 4.5; F2 length 6.5; F2 width 4; F3 length 6.5; F3 width 4; clava length 17; clava width 5; C3 length 6; spicule length 2; mesosoma length 49; mesosoma width 36; midlobe of mesoscutum length 17; mesoscutellum length 19; mesoscutellum width 18; median part of mesoscutellum width (measured medially) 8; median part of mesoscutellum, width in anterior part 7; median part of mesoscutellum, width in posterior part 8; lateral part of mesoscutellum, width (measured medially) 2.5; dorsellum length 3.5; propodeum length 8.5; costal cell length 25; costal cell width (measured at widest part) 2; marginal vein length 24; stigmal vein length 9; gaster length 51; gaster width 35; Gt 2 length (measured medially) 7; Gt 4 length (measured medially) 13; Gt 7 length (measured medially) 2.5; Gt 7 width (measured at base) 13; longest cercal seta length 10; shortest cercal seta length 5. Male. Length of body of body 1.4mm . Antenna ( Fig. 976 ) with plaque on scape black and situated close to, but below apex; dorso-basal whorls of long setae present on F1–F4 and on C1, and with a ventro-basal whorl of long setae on C1. Gaster long ovate. Otherwise as in female. Relative measurements: head length, dorsal view 16; head length, frontal view 28; head width 38.5; mouth width 13; malar space 10; eye length 16.5; scape length 14; scape width 4; plaque length 4; pedicel length 5.5; pedicel+flagellum length 65; F1 length 5; F1 width 3.5; F2 length 8; F2 width 3; F3 length 9.5; F3 width 3.5; F4 length 10; F4 width 3.5; clava length 23; clava width 3.5; mesosoma length 45; mesosoma width 32; gaster length 45; gaster width 24; longest subbasal seta on F1, length 32. Hosts . Unknown. Distribution . Costa Rica . Material examined. Holotype ♀ COSTA RICA , Alajuela , Parque Nacional Volcan Arenal , 10º26’N , 84º43’W , 600m , 26.ii.2013 , J.S. Noyes ( NHMUK ) . Paratype : 1♂ COSTA RICA, Limón , Reserva Biológica Hitoy-Cerere , 9º40′N , 53º02′W , 100m , 24-26.ii.2008 , J.S. Noyes ( NHMUK ) . Etymology . From the Latin infuscus = dark brown, referring to predominant colour of body.