Closterocerus whartoni, 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 : 83-84

Closterocerus whartoni sp.nov.

( Figs 187, 188, 218)

Diagnosis. Antenna flattened, scape widest at apex ( Fig. 188); pronotal collar with a weak carina along anterior margin ( Fig. 187); midlobe of mesoscutum with four pairs of weak setae ( Fig. 187); fore wing dark infuscate with a hyaline band close to apical margin ( Figs 188, 218); hind tarsus with T1–3 white, T4 dark brown ( Fig. 188); length of body female 1.6mm.

Female holotype: length of body 1.6mm.

Antenna dark brown. Frons golden-green. Vertex metallic bluish-purple. Mesoscutum, mesoscutellum and dorsellum metallic bluish-purple. Propodeum metallic purple. Coxae, femora, mid and hind tibiae dark brown, fore tibia whitish with base brown; tarsi with T1–3 white, T4 dark brown. Fore wing dark infuscate with a hyaline band close to apical margin; hind wing hyaline. Petiole dark brown. Gaster metallic bluish-purple.

Antenna flattened, scape widest at apex. Frons with strong reticulation; frontofacial suture V-shaped. Vertex with strong reticulation. Subtorular sutures present. Occipital margin rounded.

Pronotal collar with a weak carina along anterior margin. Mesoscutum and mesoscutellum with strong reticulation; notauli distinct in anterior one-half; midlobe of mesoscutum with four pairs of weak 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-elongate; Gt 1-2 smooth, remaining tergites with weak reticulation.

Relative measurements: head length dorsal 20; head length frontal 21; head width 38; POL 8; OOL 3.5; lateral ocellus maximum width 3; eye length 16; malar space 6.5; mouth width 10; mesosoma length 49; mesosoma width 36; mesoscutellum length 19; mesoscutellum width 21; fore wing length 84; fore wing width 52; marginal vein length 43; postmarginal vein length 3; stigmal vein length 8; fore wing marginal fringe length 4; gaster length 53; gaster width 34.

Male. Unknown.

Hosts. Unknown.

Distribution. Mexico.

Material examined.

Type material. Holotype ♀ “ MEXICO: Oaxaca, Llano de las Flores , 17.vii.1987, 8900’ [2713m], R. Wharton ” ( TAMU).

Etymology. Named after Robert Wharton (TAMU), collector of the holotype.