Closterocerus angustipennis Hansson 2022, sp.nov.
Creators: name: Hansson, Christer
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Eulophidae
Closterocerus
Closterocerus angustipennis

description: Closterocerus angustipennis sp.nov.   
(Figs 2, 30–33)  
 Diagnosis. Antennal flagellum yellowish-white, not flattened, scape narrow (Figs 30–33); pronotal collar without a carina along anterior margin (Figs 30–33); mesoscutum and mesoscutellum with strikingly different colours (Figs 30, 32); midlobe of mesoscutum without setae (Figs 30, 32); fore wing hyaline with area below stigmal vein weakly infuscate, narrow with a long marginal fringe, length of longest seta in marginal fringe/fore wing width = 0.6, and with speculum open below and towards base of wing (Figs 2, 30–32); legs white, hind coxa infuscate at base (Figs 31, 33); male gaster dark brown with a white spot in anterior part (Fig. 32); length of body female 0.6–0.9mm, male 0.5–0.8mm.   
Female holotype: length of body 0.9mm.  
Antenna with pedicel and flagellum yellowish-white, scape pale brown. Frons with lower one-half dark brown, upper one-half metallic pale blue. Vertex metallic purple in anterior one-half, metallic blue in posterior one-half. Mesoscutum, dorsellum and propodeum metallic bluish-purple; mesoscutellum golden-red. Legs white, hind coxa infuscate at base. Fore wing hyaline with area below stigmal vein weakly infuscate, hind wing hyaline. Petiole black with metallic tinges. Gaster metallic bluish-purple with a large dark brown non-metallic median spot.  
Antenna not flattened, scape narrow with dorsal and ventral margins ±parallel-sided. Frons with strong reticulation. Vertex with strong reticulation; with a short groove medio-posteriorly. Frontofacial suture V-shaped. Subtorular sutures present. Occipital margin rounded.  
Pronotal collar without a carina along anterior margin. Mesoscutum with strong reticulation; notauli distinct almost throughout, missing close to mesoscutellum; midlobe without setae. Mesoscutellum flattened, with strong reticulation. Dorsellum convex with strong sculpture. Propodeum smooth and shiny; callus with two setae. Fore wing narrow with a long marginal fringe; speculum open below and towards base of wing; with a stigmal hairline and with radial cell bare.  
Petiole very short, just a narrow band. Gaster short ovate; all tergites with strong reticulation.  
Relative measurements: head length dorsal 11; head length frontal 14.5; head width 21; POL 4.5; OOL 1,7; lateral ocellus maximum width 1.5; eye length 12; malar space 3; mouth width 6.5; mesosoma length 24; mesosoma width 16; mesoscutellum length 9; mesoscutellum width 10; fore wing length 37; fore wing width 14.5; marginal vein length 18; postmarginal vein length 1,7; stigmal vein length 3.5; fore wing marginal fringe length 9; gaster length 26; gaster width 17.  
Variation in paratype material. Length of body: 0.6–0.9mm.Antennal flagellum yellowish-white, yellowish-white with F5 infuscate, to completely infuscate. Mesoscutellum golden-red or golden.  
Male (Figs 32, 33). Length of body: 0.5–0.8mm. Antenna white to pale orange. Gaster dark brown with a white spot in anterior part. Otherwise as in female.  
 Hosts. Unknown.   
 Distribution. Costa Rica, Ecuador.   
 Material examined.   
Type material. Holotype ♀ “ COSTA RICA: Limón, R.B. Barbilla, 550m, 9˚59’N, 83˚27’W, 18.ii.2006, J.S. Noyes ” (NHMUK). Paratypes (53♀, 108♂, CNC, MZLU, MZUCR, NHMUK): 2♀ “ COSTA RICA: Limón, R.B. Hitoy-Cerere, 100m, 9˚40’N, 83˚02’W, 14-18.i.1991, J.S. Noyes ”; 2♀ from same locality as previous but collected 20-22.ii.2006; 1♂ “ COSTA RICA: Limón, Pococi, P.N. Braulio Carrillo, Estación Quebrada Gonzalez, 10º09’N, 83º57’W, 400-500m, 24.ix.2002, Hanson & Godoy”; 3♀, 1♂ “ COSTA RICA: Alajuela, R.F. Rincon, Estación Caribe, 10º53’N, 83º18’W, 19-20.ii.2003, J.S. Noyes ”; 1♀, 9♂ “ COSTA RICA: Alajuela, P.N. Arenal, Send. Pilón, 10º27’N, 84º43’W, 26.ii.2003, J.S. Noyes ”; 1♀ 2♂ “ COSTA RICA: Alajuela, P.N. Arenal, Send. Ceibo, 10º27’N, 84º41’W, 22-23.ii.2016, J.S. Noyes, NHM (Ent) 2016-79”; 15♀, 26♂ “ COSTA RICA: Heredia, E.B. La Selva, 75m, 10º26’N, 84º01’W, 27-28.ii.2003, J.S. Noyes ”; following from same locality as previous but collected 30.iii.2001 (1♀), 30-31.iii.2002 (2♀, 1♂), 23-24.ii.2005 (6♀, 20♂), 28-29.ii.2008 (3♂), 22-24.ii.2012 (1♂); 1♀ “ COSTA RICA: Puntarenas, R.P. Karen Mogensen, 9º52′N 85º03′W, 305m, 11-21.ii.2005, C. Hansson ”; following from same locality as previous but collected 14-15.ii.2005 (10♀, 25♂), 17-18.ii.2011 (4♀, 10♂), 23-24.ii.2013 (2♀), 19-20.ii.2016 (1♀, 1♂), 11-12.ii.2018 (1♀); 1♀, 7♂ “ COSTA RICA: Puntarenas, P.N. Piedras Blancas, Estación El Bonito, 100m, 8˚43’N, 83˚13’W, 13-14.ii.2012, J.S. Noyes, NHM(Ent) 2012-91”. 1♀ “ ECUADOR: Napo, 10km NE Tena, 400m, 19-20.ii.1983, L. Masner ”; 1♂ “ ECUADOR: Pichin, Tinalandia, 850m, 2.ii.1983, Masner & Sharkey”.  
 Etymology. From the Latin angustus = narrow and penna = wing, referring to the narrow fore wing.
description: Published as part of Hansson, Christer, 2022, Eulophidae Of Costa Rica (Hymenoptera: Chalcidoidea), 4 The Genus Closterocerus Westwood S. Str., pp. 1-137 in Taxonomic Monographs on Neotropical Hymenoptera (Oxford, England) (Oxford, England) 1 (1) on pages 21-22, DOI: 10.5281/zenodo.6464279