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 masneri sp.nov. ( Figs 122 , 123 ) Diagnosis. Antenna flattened, scape widest at apex, all flagellomeres distinctly separated ( Fig. 122 ); pronotal collar with a carina along anterior margin ( Fig. 123 ); midlobe of mesoscutum with three pairs of setae ( Fig. 123 ); petiole as long as wide; fore wing infuscate with base and a band close to apical margin hyaline ( Fig. 123 ); hind tarsus with T1 infuscate, T2–4 white ( Fig. 122 ); length of body female 1.5–1.7mm . Female holotype : length of body 1.5mm . Antenna dark brown to black. Frons golden-green with black parts above frontofacial suture. Vertex metallic purplish. Mesoscutum with midlobe black and sidelobes metallic bluish-purple. Mesoscutellum black with lateral and posterior margins metallic bluish-purple. Dorsellum metallic purple. Propodeum black. Coxae, femora, mid and hind tibia dark brown; fore tibia with basal one-half brown and apical one-half white; tarsi with T1 infuscate and T2–4 white. Fore wing infuscate with base and a band close to apical margin hyaline, hind wing hyaline. Petiole black. Gaster with Gt 1 metallic blue, remaining tergites dark brown with metallic purple tinges. Antenna flattened, scape widest at apex. Frons with strong reticulation; frontofacial suture Vshaped; upper border of frons ±distinct. Vertex with strong reticulation in anterior one-half, smooth lateral to ocellar triangle. Subtorular sutures present. Occipital margin rounded. Pronotal collar with a carina along anterior margin. Mesoscutum and mesoscutellum with strong reticulation; notauli narrow and complete; midlobe of mesoscutum with three pairs of setae. Dorsellum convex and smooth. Propodeum with weak reticulation, partly smooth, with an irregular median carina; callus with three setae. Fore wing speculum closed; with a stigmal hairline and with radial cell bare. Petiole as long as wide. Gaster ovate; tergites mainly smooth, partly with very weak reticulation. Relative measurements: head length dorsal 18; head length frontal 21; head width 35; POL 6; OOL 4.5; lateral ocellus maximum width 2.5; eye length 17.5; malar space 5.5; mouth width 9; mesosoma length 51; mesosoma width 30; mesoscutellum length 20; mesoscutellum width 18; fore wing length 75; fore wing width 43; marginal vein length 41; postmarginal vein length 2; stigmal vein length 5.5; fore wing marginal fringe length 5.5; gaster length 53; gaster width 35. Variation in paratype material. Length of body: 1.7mm . The paratype is similar to the holotype . Male. Unknown. Hosts . Unknown. Distribution. Ecuador , Venezuela . Material examined. Type material. Holotype ♀ “ ECUADOR : Napo , El Chaco , Feb. 1983 , 2000m , Masner & Sharkey” ( CNC ) . Paratype : 1♀ “ VENEZUELA : Merida , Mucuy nr Tabay , 2300m , L. Masner ”, “ 2.v.1981 , cloud forest, screen sweeping” ( CNC ) . Etymology. Named after Lubomir Masner (CNC), one of the collectors of type material.