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 hirsutus sp.nov. ( Figs 108, 109 ) Diagnosis. Antenna flattened, scape widest at apex, all flagellomeres distinctly separated ( Fig. 109 ); upper frons separated from vertex by a transverse edge ( Fig. 109 ); pronotal collar with a carina along anterior margin ( Fig. 108 ); midlobe of mesoscutum without setae ( Fig. 108 ); propodeal callus with eight setae; fore wing infuscate with basal one-third and a band close to apical margin hyaline, speculum open below ( Fig. 108 ); hind tarsus with T1 and T4 dark brown, T2&3 white ( Fig. 108 ); petiole as long as wide; length of body female 1.7mm . Similar to C. arenalensis but with more setae on propodeal callus, mesoscutellum with stronger reticulation, and hind tarsus longer, 0.73× as long as hind tibia. Female holotype : length of body 1.7mm . Antenna dark brown to black. Frons golden-green. Vertex metallic bluish-purple. Mesoscutum metallic blue with posterior one-half of midlobe black with golden tinges. Mesoscutellum golden with lateral and posterior margins metallic blue. Dorsellum metallic blue. Propodeum black with metallic tinges. Coxae, femora, mid and hind tibiae black with metallic tinges; fore tibia whitish with base dark brown; fore tarsus infuscate, mid tarsus with T1–3 white and T4 infuscate, hind tarsus with T1 and T4 black, T2&3 white. Fore wing infuscate with basal one-third and a band close to apical margin hyaline; hind wing hyaline. Petiole black. Gaster with Gt 1-2 metallic bluish-green, remaining tergites metallic purplish. Antenna flattened, scape widest at apex. Frons and vertex with strong reticulation. Frontofacial suture V-shaped; upper frons separated from vertex by a transverse edge. Subtorular sutures present but dark and difficult to see. Occipital margin rounded. Pronotal collar with carina along anterior margin. Mesoscutum with strong reticulation; notauli distinct throughout; midlobe of mesoscutum without setae. Mesoscutellum with strong reticulation, reticulation weaker along posterior margin. Dorsellum convex and smooth. Propodeum with a complete median carina and with reticulation, partly smooth; callus with eight setae. Fore wing speculum open below; with a stigmal hairline and with radial cell bare. Petiole as long as wide with strong sculpture on dorsal surface. Gaster short ovate; Gt 1-2 smooth, remaining tergites with strong reticulation. Relative measurements: head length dorsal 20; head length frontal 25; head width 43; POL 7; OOL 5.5; lateral ocellus maximum width 3; eye length 19; malar space 6; mouth width 11; mesosoma length 56; mesosoma width 40; mesoscutellum length 23; mesoscutellum width 24; fore wing length 86; fore wing width 52; marginal vein length 48; postmarginal vein length 2; stigmal vein length 7; fore wing marginal fringe length 7; gaster length 58; gaster width 46. Male. Unknown. Hosts . Unknown. Distribution. Costa Rica . Material examined. Type material. Holotype ♀ “ COSTA RICA : Puntarenas , Monteverde , 1400m , 15.viii.84, L. Masner ” ( CNC ). Etymology. From the Latin hirsutus = bristly, referring to the many setae on propodeal callus (species of Closterocerus usually only have two setae on propodeal callus).