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 brillante sp.nov. ( Figs 34, 35 ) Diagnosis. Antenna with scape, pedicel and F1–3 dark brown, F4–5 whitish, scape flattened and widest at apex, flagellum not flattened, F5 long and narrow ( Fig. 35 ); pronotal collar without a carina along anterior margin ( Fig. 34 ); midlobe of mesoscutum with one pair of strong white setae ( Figs 34, 35 ); vertex, mesoscutum and mesoscutellum with very weak reticulation, shiny ( Fig. 34 ); fore wing hyaline with area below stigmal vein infuscate, speculum open below and towards base of wing ( Fig. 35 ); length of body female 0.9mm . Female holotype : length of body 0.9mm . Antenna with scape, pedicel and F1–3 dark brown, F4–5 whitish. Frons below frontofacial suture metallic blue, above suture metallic purple. Vertex golden-green. Mesoscutum with midlobe golden-green with anterior one-third golden-red, sidelobes metallic bluish-purple. Mesoscutellum golden-red with lateral and posterior margins golden-green. Setae on mesoscutum and mesoscutellum white. Dorsellum and propodeum metallic purple. Legs with coxae dark brown; fore and mid femora infuscate, hind femur dark brown; fore and mid tibiae white, hind tibia dark brown with apical one-third white; tarsi white. Fore wing hyaline with area below stigmal vein infuscate; hind wing hyaline. Petiole dark brown. Gaster with Gt 1,6 metallic bluish-purple, remaining tergites golden-purple. Antenna with scape flattened and widest at apex, pedicel and flagellum not flattened, F5 long and narrow. Frons with strong reticulation; frontofacial suture V-shaped. Vertex with very weak reticulation, shiny. Subtorular sutures present. Occipital margin rounded. Pronotal collar without a carina along anterior margin. Mesoscutum with very weak reticulation, shiny; notauli distinct in anterior one-third; midlobe with one pair of strong setae. Mesoscutellum with weak reticulation. Dorsellum convex and smooth. Propodeum smooth, without median carina; callus with two setae. Fore wing speculum open below and towards base of wing; with a stigmal hairline, radial cell bare. Petiole very short, just a narrow band. Gaster ovate; tergites smooth. Relative measurements: head length dorsal 12; head length frontal 16; head width 24; POL 4.5; OOL 2; lateral ocellus maximum width 2; eye length 13.5; malar space 3.5; mouth width 7; mesosoma length 30; mesosoma width 23; mesoscutellum length 12; mesoscutellum width 14; fore wing length 52; fore wing width 29; marginal vein length 25; postmarginal vein length 2; stigmal vein length 5.5; fore wing marginal fringe length 7.5; gaster length 30; gaster width 21. Male. Unknown. Hosts . Unknown. Distribution. Costa Rica . Material examined. Type material. Holotype ♀ “ COSTA RICA : Puntarenas , Estación Altamira , Send. Los Gigantes, 1450m , 9º02’N , 83º00’W , 7.ii-5.iii.2002 , C. Hansson & Parataxonomos” ( MZLU ) Etymology. From the Spanish brillante = shining, referring to the appearance of vertex, mesoscutum and mesoscutellum.