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 hansoni sp.nov. ( Figs 106, 107 ) Diagnosis. Antenna flattened, scape widest at apex ( Fig. 107 ); ocelli small ( Fig. 106 ); fore wing infuscate with a hyaline band close to apical margin ( Fig. 106 ); pronotal collar without a carina along anterior margin ( Fig. 106 ); midlobe of mesoscutum without setae ( Fig. 106 ); hind tarsus with T1–3 white, T4 dark brown ( Fig. 107 ); length of body female 1.1–1.4mm . Female holotype : length of body 1.3mm . Antenna dark brown to black. Frons golden-green. Vertex metallic purple. Mesoscutum metallic purple with posterior one-half of midlobe ±golden-green. Mesoscutellum metallic purple. Dorsellum and propodeum black with metallic tinges. Coxae, femora, mid and hind tibiae black with metallic tinges; fore tibia white with dorsal margin brown; fore tarsus infuscate, mid and hind tarsi with T1–3 white, T4 dark brown. Fore wing infuscate with a hyaline band close to apical margin, hind wing hyaline. Petiole not visible on type specimen, but presumably dark brown or black. Gaster dark brown with metallic tinges. Antenna flattened, scape widest at apex. Frons with strong reticulation; frontofacial suture V-shaped. Subtorular sutures present. Vertex with strong reticulation. Occipital margin rounded. Pronotal collar without a carina along anterior margin. Mesoscutum with strong reticulation, posterior one-half of midlobe with weak reticulation; notauli distinct in anterior one-half; midlobe without setae. Mesoscutellum ±flat, with strong reticulation. 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 not visible on type specimen, but presumably very short. Gaster ovate; tergites with strong reticulation. Relative measurements: head length dorsal 14.5; head length frontal 19.5; head width 31; POL 8; OOL 3; lateral ocellus maximum width 1.5; eye length 13; malar space 7; mouth width 9.5; mesosoma length 36; mesosoma width 28; mesoscutellum length 15; mesoscutellum width 17; fore wing length 62; fore wing width 36.5; marginal vein length 34; postmarginal vein length 1.5; stigmal vein length 6; fore wing marginal fringe length 6; gaster length 47; gaster width 28. Variation in paratype material. Length of body: 1.1–1.4mm . Mesoscutum metallic purple with posterior one-half of midlobe ±golden-green, completely metallic purple or metallic bluish-purple. Male. Unknown. Hosts . Unknown. Distribution. Costa Rica , Guatemala , Mexico . Material examined. Type material. Holotype ♀ “ COSTA RICA : Cartago , Cerro de la Muerte , Villa Mills , 3000m , vii-ix.1990, P. Hanson ” ( NHMUK ) . Paratypes ( 4♀ , CNC , TAMU ) : 1♀ “ GUATEMALA : Departamento Zacapa , 5km NW San Lorenzo , 2200m , xii.1986 , M. Sharkey ” ; 1♀ “ GUATEMALA : Departamento Zacapa , 13.vii.1986 , L. LeSage ” ; 1♀ “ MEXICO : Puebla , 3.7mi. S Zacapoaxtla , 23.vii.1985 , J.B. Woolley , 85/085” ; 1♀ “ MEXICO : Chiapas , Munic. Tenejapa , Paraje Yashanal , 5200-5800’ [ 1585-1768m ], 4.viii.1990 , J.B. Woolley ” . Etymology. Named after Paul E. Hanson (MZUCR), collector of the holotype .