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 crinitus sp.nov. ( Figs 81, 82 ) Diagnosis. Antenna flattened, scape widest in upper-median part ( Fig. 82 ); pronotal collar without a carina along anterior margin ( Fig. 82 ); midlobe of mesoscutum without setae ( Fig. 82 ); mesoscutellum with weak reticulation ( Fig. 82 ); fore wing narrow, 2.3× as long as wide, with long marginal fringe ( Fig. 81 ); wings weakly infuscate ±throughout ( Fig. 81 ); legs yellowish-white with hind coxa predominantly dark brown ( Figs 81, 82 ); length of body female 0.9–1.0mm. Female holotype : length of body 0.9mm . Antenna dark brown. Frons golden with area above frontofacial suture metallic purple. Vertex metallic bluish-green with metallic purple tinges. Mesoscutum with midlobe metallic bluish-green, sidelobes metallic purple. Mesoscutellum metallic bluish-green with medio-anterior one-half golden-red. Dorsellum and propodeum metallic bluish-purple. Legs yellowish-white, except hind coxa that is predominantly dark brown. Wings weakly infuscate throughout. Petiole black with metallic tinges. Gaster with Gt 1 metallic bluish-purple, remaining tergites golden-purple. Antenna flattened, scape widest in upper-median part. Frons with strong reticulation. Vertex with very weak reticulation and shiny. Frontofacial suture V-shaped. Subtorular sutures present. Occipital margin rounded. Pronotal collar without a carina along anterior margin. Mesoscutum with rather strong reticulation on midlobe, sidelobes with weak reticulation; notauli distinct in anterior one-third; midlobe without setae. Mesoscutellum convex with weak reticulation. Dorsellum flat and smooth. Propodeum smooth and shiny; callus with two setae. Fore wing narrow with long marginal fringe, speculum closed; with a stigmal hairline and with radial cell bare. Petiole very short, just a narrow band. Gaster short ovate; all tergites smooth. Relative measurements: head length dorsal 11.5; head length frontal 16.5; head width 22; POL 4; OOL 2.5; lateral ocellus maximum width 2; eye length 13; malar space 3; mouth width 6; mesosoma length 27; mesosoma width 21; mesoscutellum length 12; mesoscutellum width 12; fore wing length 54; fore wing width 23.5; marginal vein length 28; postmarginal vein length 2; stigmal vein length 4; fore wing marginal fringe length 11; gaster length 28; gaster width 16. Variation in paratype material. Length of body: 0.9–1.0mm. Midlobe of mesoscutum metallic bluish-green or golden-green. Mesoscutellum metallic bluish-green with medio-anterior one-half golden-red or golden-green. Wings weakly infuscate throughout or hyaline without infuscation. Male. Unknown. Hosts . Unknown. Distribution. Costa Rica . Material examined. Type material. Holotype ♀ “ COSTA RICA : Cartago , P.N. Tapanti , 9º45′N , 83º47′W , 1200-1550m , 20.iii- 10.iv.2000 , C. Hansson & D. Rubí ” ( MZLU ) . Paratypes : 10♀ with same label data as holotype ( MZLU , MZUCR , NHMUK ) . Etymology. From the Latin crinitus = fringed, referring to the long marginal fringe in fore wing.