Eulophidae Of Costa Rica (Hymenoptera: Chalcidoidea), 4 The Genus Closterocerus Westwood S. Str. Author Hansson, Christer text Taxonomic Monographs on Neotropical Hymenoptera 2022 Oxford, England 2022-04-28 1 1 1 137 http://dx.doi.org/10.5281/zenodo.6464278 journal article 10.5281/zenodo.6464279 978-1-7397467-0-4 2754-9844 FE033A11-ACCB-4C6D-B185-63420F8CA79B Closterocerus scitulus sp.nov. ( Figs 152, 153 , 215 , 227 , 236 ) Diagnosis. Antenna flattened, scape widest at apex, all flagellomeres distinctly separated ( Figs 153 , 227 ); frontofacial suture straight ( Fig. 236 ); pronotal collar with a weak carina along anterior margin ( Fig. 152 ); midlobe of mesoscutum with one pair of strong setae ( Figs 152, 153 ); fore wing with basal one-half weakly infuscate, almost hyaline, apical one-half strongly infuscate with two hyaline spots ( Figs 152, 153 , 215 ); hind tarsus completely pale (infuscate to white) ( Fig. 153 ); length of body female 1.7–2.0mm. Female holotype : length of body 1.7mm . Antenna dark brown. Frons golden-green. Vertex metallic bluish-purple. Mesoscutum, mesoscutellum and dorsellum metallic bluish-purple. Propodeum metallic purple. Coxae and femora dark brown with metallic tinges; fore and mid tibiae white, hind tibia dark brown; tarsi white to slightly infuscate. Fore wing predominantly infuscate, weakly infuscate in basal one-half and darker in apical one-half, apical one-half with two large hyaline spots, hind wing hyaline. Petiole black with metallic tinges. Gaster golden-purple with metallic bluish-purple tinges. Antenna flattened, scape widest at apex. Frons with strong reticulation. Vertex with strong reticulation in anterior one-half, with very weak reticulation in posterior one-half. Frontofacial suture straight. Subtorular sutures present but short. Occipital margin rounded. Pronotal collar with a weak carina along anterior margin. Mesoscutum with strong reticulation; notauli distinct in anterior one-half; midlobe of mesoscutum with one pair of strong setae. Mesoscutellum convex with strong reticulation, smooth along hind margin. Dorsellum flat and almost smooth. Propodeum smooth, some parts with weak reticulation; callus with two setae. Fore wing speculum closed; with a stigmal hairline and with radial cell bare. Petiole very short, just a narrow band. Gaster ovate-elongate; Gt 1-2 smooth, remaining tergites with weak reticulation. Relative measurements: head length dorsal 20; head length frontal 24; head width 43; POL 8; OOL 5; lateral ocellus maximum width 3,2; eye length 19; malar space 6; mouth width 11.5; mesosoma length 54; mesosoma width 36; mesoscutellum length 22; mesoscutellum width 21.5; fore wing length 89; fore wing width 60; marginal vein length 47; postmarginal vein length 6.5; stigmal vein length 7; fore wing marginal fringe length 3; gaster length 65; gaster width 33. Variation in paratype material. Length of body: 1.9–2.0mm. Fore wing predominantly infuscate, weakly infuscate in basal one-half and darker in apical one-half, apical one-half with two large hyaline spots, or with basal one-half hyaline. Male. Unknown. Hosts . Unknown. Distribution. Costa Rica . Material examined. Type material. Holotype ♀ “ COSTA RICA : Cartago , La Cangreja , 1950m , 9˚48’N, 83˚58’W, iii-v.1992, P. Hanson ” ( NHMUK ) . Paratypes ( 4♀ , MZLU , MZUCR , NHMUK ) : 1♀ from same locality as holotype but collected vi-vii.1992 ; 1♀ “ COSTA RICA : San José , Cuericí , Sendero el Carbon , 5km al E. de Villa Mills , 2700m , 23.viii.1996 , B. Gamboa , swept, LS 390100_500100, #8376” ; 1♀ “ COSTA RICA : San José , 19km S, 1km W Empalme , Mirador Quetzal , 2600m , i.2000 , P. Hanson ” ; ♀ “ COSTA RICA : San José , San Gerardo de Dota , 20-21.ii.2013 , J.S. Noyes , NHM (Ent) 2012-91” . Etymology. From the Latin scitulus = beautiful, elegant.