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 nitidulus sp.nov. ( Figs 127 , 136 , 212 , 222 , 232 ) Diagnosis. Antenna with scape and pedicel flattened, flagellum only slightly flattened, scape ±triangular and widest at apex ( Figs 136 , 222 ); setae on vertex and on mesoscutellum long and strong, 3× as long as maximum width of lateral ocelli ( Fig. 232 ); pronotal collar without a carina along anterior margin ( Fig. 127 ); midlobe of mesoscutum without setae ( Fig. 127 ); mesoscutum and mesoscutellum shiny, with very weak reticulation ( Fig. 127 ); fore wing hyaline with median one-third infuscate ( Figs 127 , 212 ); hind tarsus white ( Fig. 136 ); length of body female 1.0– 1.3mm . Female holotype : length of body 1.2mm . Antenna with scape, pedicel and F1–3 dark brown, F4–5 white with weak infuscations. Frons golden-green. Vertex metallic bluish-purple in anterior one-half, metallic bluish-green in posterior one-half. Mesoscutum with midlobe golden and sidelobes metallic purple. Mesoscutellum and dorsellum metallic bluish-purple. Propodeum golden-green. Coxae, femora and hind tibiae dark brown; fore and mid tibiae white; fore tarsus infuscate, mid and hind tarsi white. Fore wing hyaline with median one-third infuscate; hind wing hyaline. Petiole dark brown. Gaster with Gt 1&6 metallic bluish-green, remaining tergites dark brown with metallic purple tinges. Scape and pedicel flattened but flagellum only slightly flattened, scape widest at apex. Frons and vertex with strong reticulation. Frontofacial suture V-shaped. Subtorular sutures present. Occipital margin rounded. Pronotal collar without a carina along anterior margin. Mesoscutum and mesoscutellum shiny with very weak reticulation, partly smooth; notauli distinct in anterior one-half; midlobe of mesoscutum without setae. Dorsellum convex and smooth. Fore wing speculum closed; with a stigmal hairline and with radial cell bare. Petiole very short, just a narrow band. Gaster short ovate, almost circular. Relative measurements: head length dorsal 17; head length frontal 21.5; head width 33; POL 4,8; OOL 3; lateral ocellus maximum width 3; eye length 18; malar space 4; mouth width 8; mesosoma length 38; mesosoma width 27; mesoscutellum length 14.5; mesoscutellum width 16; fore wing length 64; fore wing width 36; marginal vein length 32; postmarginal vein length 1.5; stigmal vein length 5.5; fore wing marginal fringe length 6.5; gaster length 37; gaster width 31. Variation in paratype material. Length of body: 1.0– 1.3mm . Mesoscutum with midlobe golden and sidelobes metallic purple, or dark brown with metallic purple tinges, or midlobe bright metallic bluish-green. Mesoscutellum metallic bluish-purple, metallic purple, or golden-red with lateral and posterior margins metallic bluish-green. Propodeum golden-green or metallic purple. Male. Unknown. Hosts . Unknown. Distribution. Costa Rica . Material examined. Type material. Holotype ♀ “ COSTA RICA : Heredia , La Selva Biological Station , 50m , ii.1991 , J.S. Noyes ” ( NHMUK ) . Paratypes ( 39♀ , CNC , MZLU , MZUCR , NHMUK ): following from same locality as holotype but collected iv.1991 ( 2♀ ), 2.i.1996 ( 1♀ ), iii.1996 ( 1♀ ) ; 1♀ “ COSTA RICA : Alajuela , Cordillera Tilaram , Peñas Blancas , 700m , xii.1986 , E. Cruz ” ; 1♀ from same locality as previous but collected 9.i.1987 ; 6♀ “ COSTA RICA : Alajuela , San Carlos , Sendero Pilón , 650m , 9.ix-22.xi.1999 , G. Carballo , LN 457900_269100”; following from same locality as previous but collected 22.xii.1999 - 7.iv.2000 ( 3♀ ), 4.viii-7.xii.2000 ( 5♀ ), 5.iii-20. iv.2001 ( 2♀ ) ; 1♀ “ COSTA RICA : Alajuela , Estación Pilón , 10º43’N , 85º59’W , 12-18.ii.2004 , C. Hansson & J.A. Azofeifa ” ; 1♀ “ COSTA RICA : Cartago , Turrialba, R. Dantas , 0.4 Km Aguas Arriba Margen Derecho , 400-500m , 6.ii-10.iii.2000 , E. Rojas , LN 218100/593650, #55294” ; 1♀ “ COSTA RICA : Guanacaste , ACG, Estación Pitilla , 10º59’N , 85º25’W , 700m , 4-7.i.2001 , R. Thomas , C. Moraga ” ; 1♀ from same locality as previous but collected 22-30.i.2001 ; 2♀ “ COSTA RICA : Limón , R.B. Hitoy-Cerere , 100m , 9˚40’N, 83˚02’W, 24-26.ii.2008 , J.S. Noyes ”; following from same locality as previous but collected 17.v-17.vii.1999 ( 3♀ ), 22-23.ii.2010 ( 3♀ ) ; 1♀ “ COSTA RICA : Limón , Pococí, P. N. Braulio Carrillo , Estación Quebrada González, 400-500m , 24.ix.2002 , P. Hanson & C. Godoy , LN 238380/543100, #71291” ; 1♀ “ COSTA RICA : Limón , 16km W Guapiles , 400m , iii.1989 , Paul Hanson” ; 1♀ from same locality as previous but collected iv-v.1989 ; 1♀ “ COSTA RICA : Limón , 4km NE Bribri , 50m , i-iii.1990, P. Hanson ” ; 1♀ “ COSTA RICA : San José , P.N. Braulio Carrillo , 9.5km E tunel. 1000m , x-xii.1989, P. Hanson ” . Etymology. From the Latin nitidulus = shiny, referring to the shiny thoracic dorsum.