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 whartoni sp.nov. ( Figs 187, 188 , 218 ) Diagnosis. Antenna flattened, scape widest at apex ( Fig. 188 ); pronotal collar with a weak carina along anterior margin ( Fig. 187 ); midlobe of mesoscutum with four pairs of weak setae ( Fig. 187 ); fore wing dark infuscate with a hyaline band close to apical margin ( Figs 188 , 218 ); hind tarsus with T1–3 white, T4 dark brown ( Fig. 188 ); length of body female 1.6mm . Female holotype : length of body 1.6mm . Antenna dark brown. Frons golden-green. Vertex metallic bluish-purple. Mesoscutum, mesoscutellum and dorsellum metallic bluish-purple. Propodeum metallic purple. Coxae, femora, mid and hind tibiae dark brown, fore tibia whitish with base brown; tarsi with T1–3 white, T4 dark brown. Fore wing dark infuscate with a hyaline band close to apical margin; hind wing hyaline. Petiole dark brown. Gaster metallic bluish-purple. Antenna flattened, scape widest at apex. Frons with strong reticulation; frontofacial suture V-shaped. Vertex with strong reticulation. Subtorular sutures present. Occipital margin rounded. Pronotal collar with a weak carina along anterior margin. Mesoscutum and mesoscutellum with strong reticulation; notauli distinct in anterior one-half; midlobe of mesoscutum with four pairs of weak setae. Dorsellum convex and smooth. Propodeum smooth, without median carina; 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 21; head width 38; POL 8; OOL 3.5; lateral ocellus maximum width 3; eye length 16; malar space 6.5; mouth width 10; mesosoma length 49; mesosoma width 36; mesoscutellum length 19; mesoscutellum width 21; fore wing length 84; fore wing width 52; marginal vein length 43; postmarginal vein length 3; stigmal vein length 8; fore wing marginal fringe length 4; gaster length 53; gaster width 34. Male. Unknown. Hosts . Unknown. Distribution. Mexico . Material examined. Type material. Holotype ♀ “ MEXICO : Oaxaca , Llano de las Flores , 17.vii.1987 , 8900’ [ 2713m ], R. Wharton ” ( TAMU ). Etymology. Named after Robert Wharton (TAMU), collector of the holotype .