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 verticillus sp.nov. ( Figs 185, 186 ) Diagnosis. Antenna flattened, scape triangular and widest just below apex ( Fig. 186 ); flagellomeres with setae/sensillae in a basal whorl ( Figs 185, 186 ); pronotal collar without a carina along anterior margin ( Fig. 185 ); midlobe of mesoscutum with one pair of strong setae ( Fig. 185 ); fore wing hyaline with an infuscate spot below stigmal vein ( Fig. 185 ); hind tarsus white ( Fig. 186 ); length of body female 1.0– 1.4mm . Female holotype : length of body 1.0mm. Antenna dark brown. Frons golden-green. Vertex golden-green. Mesoscutum golden-green. Mesoscutellum and dorsellum metallic bluish-purple. Propodeum dark brown. Coxae and femora dark brown; fore and mid tibiae white, hind tibia dark brown with apex pale brown; tarsi white. Fore wing hyaline with an infuscate spot below stigmal vein; hind wing hyaline. Petiole dark brown. Gaster with Gt 1-3 golden-green with lateral parts metallic purple, remaining tergites brown with metallic tinges. Antenna flattened. Frons with weak reticulation; frontofacial suture V-shaped. Vertex with very weak reticulation Subtorular sutures present. Occipital margin rounded. Pronotal collar without a carina along anterior margin. Mesoscutum and mesoscutellum with very weak reticulation; notauli distinct in anterior one-half; midlobe of mesoscutum with one pair of strong 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; Gt 1-2 smooth, remaining tergites with very weak reticulation. Relative measurements: head length dorsal 11; head length frontal 15; head width 24; POL 5; OOL 3; lateral ocellus maximum width 2; eye length 11; malar space 3.5; mouth width 7; mesosoma length 27; mesosoma width 21; mesoscutellum length 11; mesoscutellum width 12.5; fore wing length 54; fore wing width 28.5; marginal vein length 26; postmarginal vein length 2; stigmal vein length 4.5; fore wing marginal fringe length 10; gaster length 38; gaster width 20. Variation in paratype material. Length of body: 1.0– 1.4mm . Vertex golden-green or metallic purple. Mesoscutum golden-green or metallic purple. Mesoscutellum and dorsellum metallic bluish-purple or purple. Propodeum dark brown or metallic purple. Gt 1-3 golden-green or metallic purple, Gt 6 brown with metallic tinges or metallic bluish-green. Male. Unknown. Hosts . Unknown. Distribution. Costa Rica . Material examined. Type material. Holotype ♀ “ COSTA RICA : San José , 2km W Empalme , 2300m , 9˚43’N, 83˚58’W, ii-iii.1995, G. Navarro ” ( NHMUK ) . Paratypes ( 2♀ , MZLU , NHMUK ) : 1♀ “ COSTA RICA : Heredia , 6km ENE Vara Blanca , 10˚11’N, 84˚07’W, 2000m , ii.2002 , 20/M/NOTN, INBio, OET, ALAS” ; 1♀ “ COSTA RICA : Puntarenas , E.B. Monteverde , 10º20′N , 84º49′W , 1540m , 26.ii.2007 , J.S. Noyes , BMNH(Ent) 2010-21” . Etymology. From the Latin verticillus = whirl, referring to the arrangement of setae on flagellomeres.