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

description: 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.
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 82-83, DOI: 10.5281/zenodo.6464279