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 nicoyae sp. nov. Figs 12 , 34 , 61 , 87 , 104 Diagnosis . Mandibles yellowish-white, with a row of small teeth at apex (as in Fig. 112 ); flagellum pale brown, 0.7× as long as width of mesoscutum, F4 0.7× as long as wide, apex of clava pointed ( Figs 12 , 61 ); frons between scrobes and eyes and vertex with strong reticulation ( Figs 87 , 104 ); occipital margin with an edge behind ocellar triangle ( Fig. 87 ); mesoscutum and mesoscutellum with same colour and reticulation ( Fig. 34 ); mesoscutellum convex; dorsellum ±flat, smooth and shiny, posterior margin ±evenly rounded; fore wing with 2–4 setae in apico-dorsal part of costal cell, completely hyaline ( Fig. 12 ); fore coxa white, mid coxa yellowish-brown ( Fig. 12 ); gaster ( Fig. 34 ) 1.6× as long as wide; Gt 1 0.4× as long as length of gaster, dorsal surface smooth, posterior margin curved slightly forwards; Gt 6 0.1× as long as length of gaster with anterior part 1.8× 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 weakly concave medially, smooth and shiny, posterior margin ±evenly rounded with a few small dents medially. Propodeal callus with 14 setae. Fore wing with five setae on dorsal surface of submarginal vein; with 14 admarginal setae; costal cell with a row of 12 setae on ventral surface, apico-dorsal margin with two setae; speculum distinct and closed below. Gaster long ovate; Gt 1 smooth and shiny without sculpture, remaining tergites with weak reticulation; Gt 1 with posterior margin curved slightly forwards, Gt 6 with posterior margin straight. Colour. Head black with metallic green tinges, scrobes black. Mandibles yellowish-white.Antennae pale brown. Mesosoma black with metallic tinges. Fore coxa white, mid coxa yellowish-brown, hind coxa black with metallic tinges; remaining parts of legs yellowish-white. Gt 1 black with metallic blue tinges, remaining tergites black with metallic tinges. Relative measurements: head length, dorsal view 17; head length, frontal view 35; head width 46; POL 11.5; OOL 5; mouth width nm; malar space 7; eye length 22; lateral ocellus diameter 4; scape length 16; scape width 3.5; pedicel length 5.5; pedicel width. dorsal view 3.5; flagellum length 26; F1 length 4; F1 width 5; F2 length 3.5; F2 width 5; F3 length 3.5; F3 width 5; F4 length 3.5; F4 width 5; clava length 8; clava width 5; pronotum length 17; pronotum width 34; mesosoma length 61; mesosoma width 40; midlobe of mesoscutum length 23; mesoscutellum length 19.5; mesoscutellum width 21; propodeum length 12; hind tibia length 39; hind tibial spur1 length 5; hind tibial spur2 length 3; hind tarsus length 28; hind basitarsus length 7; fore wing length 100; fore wing width 44; costal cell length 32; costal cell width 3; marginal vein length 30; postmarginal vein length 15; stigmal vein length 10; Gt 1 length 22; Gt 6 length 9; Gt 6 width at base 20; Gt 6 width at apex 11; gaster length 62; gaster width 39. Variation. Costal cell with 2–4 setae in apico-dorsal part. Propodeal callus with 10–14 setae. Male . Unknown. Distribution . Costa Rica . Etymology . Referring to type locality. Karen Mogensen Private Reserve is situated on the Nicoya Peninsula. Material . Holotype female : COSTA RICA , Puntarenas , Reserva Privada Karen Mogensen , 9º52′N , 85º03′W , 305m , 23-24.ii.2007 , J.S. Noyes ( NHMUK ). Non-type material: 1♀ COSTA RICA , Guanacaste , Area de Conservacion Guanacaste , Sector Pailas , Pailas Dos PL12-3, 10.7631°N 85.3344°W , 820m 11-18.xii.2014 , D. Janzen , W. Hallwachs ( BIOUG44129 -D07) ( MZLU ). This specimen is barcoded, but because of bad fragmentation with parts missing it is not included as type material.