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

description: Closterocerus clarus sp.nov.   
(Fig. 69)  
 Diagnosis. Antenna flattened, scape widest at apex; pronotal collar with a carina along anterior margin (Fig. 69); midlobe of mesoscutum with one pair of setae, attached in posterior part (Fig. 69); fore wing hyaline with areas below stigmal vein and along apical margin infuscate (Fig. 69); hind tarsus with T1 infuscate, T2–3 white, and T4 dark brown; length of body female 1.3mm.   
Female holotype: length of body 1.3mm.  
Antenna dark brown. Head with frons golden-green; vertex metallic purple. Mesoscutum golden with parts close to notauli metallic bluish-purple. Mesoscutellum with median part golden and lateral parts metallic bluish-purple. Dorsellum golden-green. Propodeum black. Coxae, femora, mid and hind tibiae dark brown, fore tibia pale brown in basal one-half and whitish in apical one-half; fore tarsus infuscate, mid tarsus with T1–3 white and T4 black, hind tarsus with T1 infuscate, T2–3 white and T4 black. Fore wing hyaline with area below stigmal vein and along apical margin infuscate, hind wing hyaline. Petiole black. Gaster dark brown with metallic blue, purple and green tinges.  
Antenna flattened, scape widest at apex. Frons and vertex with strong reticulation. Frontofacial suture V-shaped. Subtorular sutures present. Occipital margin rounded.  
Pronotal collar with a carina along anterior margin. Mesoscutum with strong reticulation on midlobe, sidelobes with weak reticulation and shiny; notauli distinct throughout; midlobe with one pair of setae, attached in posterior part. Mesoscutellum convex, with strong reticulation, except sides and posterior part that have weak reticulation. Dorsellum convex and smooth. Propodeum with strong reticulation and with two irregular median carinae; callus with two setae. Fore wing speculum closed; with a stigmal hairline and with radial cell bare.  
Petiole transverse with strong sculpture on dorsal surface. Gaster ±circular with apex rounded; tergites smooth.  
Relative measurements: head length dorsal 19; head length frontal 23; head width 38; POL 6; OOL 4; lateral ocellus maximum width 3; eye length 21; malar space 3; mouth width 9.5; mesosoma length 43; mesosoma width 32; mesoscutellum length 17.5; mesoscutellum width 20; fore wing length 58; fore wing width 38; marginal vein length 32; postmarginal vein length 1.5; stigmal vein length 6; fore wing marginal fringe length 3; gaster length 42; gaster width 36.  
Male. Unknown.  
 Hosts. Unknown.   
 Distribution. Costa Rica.   
 Material examined.   
Type material. Holotype ♀ “ COSTA RICA: Guanacaste, Estación Pitilla, 700m, v.1994, P. Rios, LN 330200_380200, #3339” (NHMUK).  
 Etymology. From the Latin clarus = brilliant.
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 36-37, DOI: 10.5281/zenodo.6464279