Closterocerus brillante, Hansson, 2022

Hansson, Christer, 2022, Eulophidae Of Costa Rica (Hymenoptera: Chalcidoidea), 4 The Genus Closterocerus Westwood S. Str., Taxonomic Monographs on Neotropical Hymenoptera (Oxford, England) 1 (1), pp. 1-137 : 31-32

Closterocerus brillante sp.nov.

( Figs 34, 35)

Diagnosis. Antenna with scape, pedicel and F1–3 dark brown, F4–5 whitish, scape flattened and widest at apex, flagellum not flattened, F5 long and narrow ( Fig. 35); pronotal collar without a carina along anterior margin ( Fig. 34); midlobe of mesoscutum with one pair of strong white setae ( Figs 34, 35); vertex, mesoscutum and mesoscutellum with very weak reticulation, shiny ( Fig. 34); fore wing hyaline with area below stigmal vein infuscate, speculum open below and towards base of wing ( Fig. 35); length of body female 0.9mm.

Female holotype: length of body 0.9mm.

Antenna with scape, pedicel and F1–3 dark brown, F4–5 whitish. Frons below frontofacial suture metallic blue, above suture metallic purple. Vertex golden-green. Mesoscutum with midlobe golden-green with anterior one-third golden-red, sidelobes metallic bluish-purple. Mesoscutellum golden-red with lateral and posterior margins golden-green. Setae on mesoscutum and mesoscutellum white. Dorsellum and propodeum metallic purple. Legs with coxae dark brown; fore and mid femora infuscate, hind femur dark brown; fore and mid tibiae white, hind tibia dark brown with apical one-third white; tarsi white. Fore wing hyaline with area below stigmal vein infuscate; hind wing hyaline. Petiole dark brown. Gaster with Gt 1,6 metallic bluish-purple, remaining tergites golden-purple.

Antenna with scape flattened and widest at apex, pedicel and flagellum not flattened, F5 long and narrow. Frons with strong reticulation; frontofacial suture V-shaped. Vertex with very weak reticulation, shiny. Subtorular sutures present. Occipital margin rounded.

Pronotal collar without a carina along anterior margin. Mesoscutum with very weak reticulation, shiny; notauli distinct in anterior one-third; midlobe with one pair of strong setae. Mesoscutellum with weak reticulation. Dorsellum convex and smooth. Propodeum smooth, without median carina; callus with two setae. Fore wing speculum open below and towards base of wing; with a stigmal hairline, radial cell bare.

Petiole very short, just a narrow band. Gaster ovate; tergites smooth.

Relative measurements: head length dorsal 12; head length frontal 16; head width 24; POL 4.5; OOL 2; lateral ocellus maximum width 2; eye length 13.5; malar space 3.5; mouth width 7; mesosoma length 30; mesosoma width 23; mesoscutellum length 12; mesoscutellum width 14; fore wing length 52; fore wing width 29; marginal vein length 25; postmarginal vein length 2; stigmal vein length 5.5; fore wing marginal fringe length 7.5; gaster length 30; gaster width 21.

Male. Unknown.

Hosts. Unknown.

Distribution. Costa Rica.

Material examined.

Type material. Holotype ♀ “ COSTA RICA: Puntarenas, Estación Altamira , Send. Los Gigantes, 1450m, 9º02’N, 83º00’W, 7.ii-5.iii.2002, C. Hansson & Parataxonomos” ( MZLU)

Etymology. From the Spanish brillante = shining, referring to the appearance of vertex, mesoscutum and mesoscutellum.