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 tapantibius sp.nov. ( Figs 164–166 ) Diagnosis. Antenna flattened, scape widest at apex ( Fig. 165 ); vertex long and flat ( Fig. 166 ), 0.9× as long as wide; pronotal collar with a weak carina along median anterior margin ( Fig. 164 ); midlobe of mesoscutum without setae ( Fig. 164 ); fore wing hyaline with median part and apical margin infuscate ( Figs 164, 165 ); hind tarsus with T1 dark brown, T2–4 white ( Fig. 165 ); length of body female 1.0– 1.2mm . Female holotype : length of body 1.2mm . Antenna dark brown. Head with frons golden with median part golden-green; vertex metallic purple. Mesoscutum and mesoscutellum metallic purple. Dorsellum and propodeum black. Coxae and femora dark brown with metallic tinges, fore and mid tibiae whitish, hind tibia dark brown; fore and mid tarsi infuscate, hind tarsus with T1 dark brown, T2–4 white. Fore wing hyaline with median part and apical margin infuscate, hind wing hyaline. Petiole hidden in type specimen. Gaster with Gt 1-2 golden-green, Gt 3-7 metallic bluish-purple. Antenna flattened, scape widest at apex. Frons and vertex with strong reticulation. Frontofacial suture V-shaped. Subtorular sutures present. Occipital margin rounded. Pronotal collar with a weak carina medially along anterior margin. Mesoscutum with strong reticulation; notauli distinct throughout; midlobe without setae. Mesoscutellum flat, with strong reticulation. Dorsellum convex with strong reticulation. Propodeum smooth and shiny without median carina; callus with two setae. Fore wing speculum closed; with a stigmal hairline and with radial cell bare. Petiole hidden in type specimen. Gaster ovate; tergites with weak reticulation. Relative measurements: head length dorsal 17; head length frontal 18; head width 32; POL 5,2; OOL 3; lateral ocellus maximum width 3; eye length 15; malar space 5; mouth width 9; mesosoma length 38; mesosoma width 30; mesoscutellum length 15; mesoscutellum width 17; fore wing length 61; fore wing width 39; marginal vein length 33; postmarginal vein length 2; stigmal vein length 6; fore wing marginal fringe length 5.5; gaster length 42; gaster width 26. Variation in paratype material. Length of body: 1.0mm. The paratype is similar to the holotype . Male. Unknown. Distribution. Costa Rica . Material examined. Type material. Holotype ♀ “ COSTA RICA : Cartago , P.N. Tapanti , 9˚45’N, 83˚47’W, 1200-1500m , 20.iii-10. iv.2000 , swept, C. Hansson & D. Rubí ” ( MZLU ) . Paratype 1♀ “ COSTA RICA : Puntarenas , E.B. Monteverde , 10º20′N , 84º49′W , 1540m , 26.ii.2007 , J.S. Noyes , BMNH(Ent) 2010-21” ( NHMUK ) . Etymology. Named after the type locality, Parque Nacional de Tapantí.