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 melasoma Hansson sp.nov. ( Figs 494, 495 , 834 ) Diagnosis (female). Antenna yellowish-brown with a solid clava ( Fig. 834 ); genal carina present; mesoscutellum ( Fig. 494 ) with weak reticulation on median part, lateral parts with strong reticulation, meshes elongate, submedian grooves ±straight and parallel, indistinct in anterior one-third; propodeum ( Fig. 494 ) with strong reticulation, callus with six setae; gaster ( Fig. 494 ) 1.9× as long as wide, tergites with strong reticulation; body black non-metallic ( Figs 494, 495 ). Female holotype : length of body 1.7mm ( paratype 1.9mm ). Scape yellowish-brown, pedicel and flagellum pale brown. Head, mesosoma and gaster black non-metallic. Legs with coxae black non-metallic; fore and mid trochanters dark brown, hind trochanter yellowish-brown; femora dark brown; tibiae yellowish-brown; T1–3 yellowish-brown, T4 pale brown. Petiole black. Antenna with solid clava. Face below level of toruli with weak reticulation, clypeus smooth, frons with strong reticulation, antennal scrobes with weak reticulation; with genal carina. Vertex with strong reticulation outside ocellar triangle, with transverse carinae inside ocellar triangle. Mesoscutum with strong reticulation, meshes isodiametric on sidelobes, elongate on midlobe; midlobe without median groove, with nine scattered adnotaular setae. Mesoscutellum with weak reticulation on median part, lateral parts with strong reticulation, meshes elongate; submedian grooves ±straight and parallel, indistinct in anterior one-third; with 11 setae scattered over lateral parts. Dorsellum with weak sculpture, with median carina. Propodeum with a strong median carina; with strong reticulation; callus with six 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. Relative measurements: head length, dorsal view 20; head length, frontal view 34.5; POL 9.5; OOL 6; lateral ocellus diameter 3.5; head width 44; mouth width nm; malar space 13.5; eye length 17; scape length 16; scape width 3.5; pedicel+flagellum length 36; pedicel length 5.5; pedicel width, dorsal view 3.5; F1 length 4.5; F1 width 3.5; F2 length 6; F2 width 4; F3 length 5.5; F3 width 4; clava length 13.5; clava width 5; C3 length 5; spicule length 1; mesosoma length 52; mesosoma width 39; midlobe of mesoscutum length 15; mesoscutellum length 20; mesoscutellum width 21; median part of mesoscutellum width (measured medially) 8; median part of mesoscutellum, width in anterior part 7.5; median part of mesoscutellum, width in posterior part 7.5; lateral part of mesoscutellum, width (measured medially) 5.5; dorsellum length 2.5; propodeum length 7.5; costal cell length 29; costal cell width (measured at widest part) 2.5; marginal vein length 25; stigmal vein length 9; gaster length 59; gaster width 31; Gt2 length (measured medially) 8; Gt4 length (measured medially) 6; Gt7 length (measured medially) 6.5; Gt7 width (measured at base) 10; longest cercal seta length 11; shortest cercal seta length 5. Male. Unknown. Hosts . Reared from a blister-like leaf gall induced by an unidentified Cecidomyiidae on Roupala sp. ( Proteaceae ). Distribution . Costa Rica . Material examined. Holotype ♀ COSTA RICA , Alajuela , Reserva Forestal Grecia , 1500m , 18.iii.1992 , from Roupala leaf gall, P. Hanson ( NHMUK ) . Paratype : 1♀ with same label data as holotype ( MZLU ) . Etymology . From the Greek melas = black, and soma = body, referring to colour of body.