Review of Grotiusomyia Girault (Chalcidoidea: Eulophidae), an exclusively New World genus, including 17 new species Author Hansson, Christer text Zootaxa 2023 2023-05-04 5278 1 39 77 http://dx.doi.org/10.11646/zootaxa.5278.1.2 journal article 10.11646/zootaxa.5278.1.2 1175-5326 7894979 9D0E61E2-298C-4248-BD76-A2C392372F90 Grotiusomyia flavimacula sp. nov. Figs 6 , 28 , 55 , 81 , 98 Diagnosis . Mandibles yellowish-brown with base brown, with a row of small teeth at apex (as in Fig. 112 ); flagellum dark brown, 1.1× as long as width of mesoscutum, F4 1.3× as long as wide, apex of clava pointed ( Figs 6 , 55 ); frons dark with two white spots lateral to toruli and close to eye margin ( Fig. 98 ); frons between scrobes and vertex with strong reticulation ( Figs 81 , 98 ); occipital margin with a sharp edge behind ocellar triangle ( Fig. 81 ); mesoscutum and mesoscutellum with same colour and reticulation ( Fig. 28 ); mesoscutellum convex; dorsellum ±flat, with weak reticulation, medio-posterior part protruding, with postero-lateral parts incised; fore wing with ten setae in apico-dorsal part of costal cell, completely hyaline, speculum small ( Fig. 6 ); fore and mid coxae yellowish-brown ( Fig. 6 ); gaster ( Fig. 28 ) 1.7× as long as wide; Gt 1 0.4× as long as length of gaster, dorsal surface smooth and shiny, posterior margin straight; Gt 6 0.1× as long as length of gaster with anterior part 1.6× as wide as width of posterior part, posterior margin straight with sharp edge. Description (female holotype ). Length 1.8 mm . Frons between scrobes and eyes and vertex with strong reticulation, scrobes smooth. Mandibles with a row of small teeth at apex. Occipital margin with a sharp edge behind ocellar triangle. Dorsellum ±flat, with weak reticulation, medio-posterior part protruding, with postero-lateral parts incised. Propodeal callus with eight setae. Fore wing with five setae on dorsal surface of submarginal vein; with 18 admarginal setae; costal cell with 25 setae in two rows on ventral surface, apico-dorsal margin with ten setae; speculum small and closed below. Gaster ovate; Gt 1 smooth and shiny, remaining tergites with weak reticulation; Gt 1 and Gt 6 with posterior margin straight. Colour. Head metallic bluish-green, scrobes black with metallic tinges, frons with two white spots lateral to toruli and close to eye margin. Mandibles yellowish-brown with base brown.Antennae with scape yellowish-brown, pedicel pale brown, flagellum dark brown. Mesosoma black with metallic green tinges; dorsellum metallic purple. Fore and mid leg yellowish-brown, hind leg yellowish-brown with coxa black with metallic tinges. Gaster with Gt 1 metallic bluish-green, remaining tergites dark brown to black with metallic tinges. Relative measurements: head length, dorsal view 19; head length, frontal view 30; head width 44; POL 9; OOL 5.5; mouth width 10.5; malar space 7; eye length 21; lateral ocellus diameter 5; scape length 15; scape width 3.5; pedicel length 6; pedicel width. dorsal view 4; flagellum length 38; F1 length 7; F1 width 4; F2 length 5.5; F2 width 5; F3 length 6; F3 width 5; F4 length 6; F4 width 4.5; clava length 11; clava width 4.5; pronotum length 18; pronotum width 29; mesosoma length 65; mesosoma width 35; midlobe of mesoscutum length 18; mesoscutellum length 20; mesoscutellum width 19; propodeum length 14; hind tibia length 36; hind tibial spur1 length 9; hind tibial spur2 length nm; hind tarsus length 30; hind basitarsus length 9.5; fore wing length 105; fore wing width 50; costal cell length 30; costal cell width 3; marginal vein length 33; postmarginal vein length 15.5; stigmal vein length 11; Gt 1 length 23; Gt 6 length 5.5; Gt 6 width at base 21; Gt 6 width at apex 13; gaster length 60; gaster width 35.5. Male . Unknown. Distribution . Costa Rica . Etymology . From the Latin flavus = yellow, and macula = spot, referring to yellowish spots on frons. Material . Holotype female: COSTA RICA , Alajuela , Estación Biológica San Ramón , 10°13'N , 84°37'W , 900m , viii-ix.1997, P. Hanson ( NHMUK ).