Closterocerus sulcatus, 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 : 75

Closterocerus sulcatus sp.nov.

( Figs 160–162 )

Diagnosis. Antenna with scape, pedicel and F1 dark brown, F2–5 pale brown, scape narrow, pedicel slightly flattened, scape and flagellum not flattened ( Figs 161, 162 ); eyes large, 8.3× as long as malar space ( Fig. 162 ); vertex, mesoscutum and mesoscutellum with very strong reticulation ( Fig. 160 ); pronotal collar without a carina along anterior margin ( Fig. 160 ); notauli as deep grooves, almost complete ( Fig. 160 ); midlobe of mesoscutum without setae ( Fig. 160 ); fore wing hyaline with area below stigmal vein infuscate ( Fig. 161 ); length of body female 0.9mm.

Female holotype: length of body 0.9mm.

Antenna with scape, pedicel and F1 dark brown, F2–5 pale brown. Frons metallic bluish-green. Vertex black with purple tinges. Mesoscutum black with metallic greenish-purple tinges. Mesoscutellum and dorsellum black with metallic purple tinges. Propodeum golden-purple. Legs with coxae dark brown; fore and mid femora infuscate, hind femur dark brown with apex white; fore and mid tibiae white with base infuscate, hind tibia with basal one-half dark brown and apical one-half white; tarsi white. Fore wing hyaline with area below stigmal vein infuscate; hind wing hyaline. Petiole dark brown. Gaster golden-purple.

Antenna with pedicel slightly flattened, scape and flagellum not flattened, scape thus narrow. Frons with strong reticulation; frontofacial suture V-shaped. Vertex with very strong reticulation, with a groove in medio-posterior part. Subtorular sutures present. Occipital margin rounded.

Pronotal collar without a carina along anterior margin. Mesoscutum with very strong reticulation; notauli as distinct and deep grooves, missing in very posterior part; midlobe without setae. Mesoscutellum with very strong reticulation. Dorsellum convex with very strong reticulation. Propodeum with weak reticulation, without median carina; callus with two setae. Fore wing speculum closed; with a stigmal hairline, radial cell bare.

Petiole very short, just a narrow band. Gaster almost circular; tergites with strong reticulation.

Relative measurements: head length dorsal 13; head length frontal 20; head width 26; POL 4.5; OOL 3; lateral ocellus maximum width 2.5; eye length 17; malar space 2; mouth width 6; mesosoma length 28; mesosoma width 21.5; mesoscutellum length 12; mesoscutellum width 12.5; fore wing length 40; fore wing width 24; marginal vein length 20; postmarginal vein length 2; stigmal vein length 4.5; fore wing marginal fringe length 3; gaster length 26; gaster width 21.

Male. Unknown.

Hosts. Unknown.

Distribution. Costa Rica.

Material examined.

Type material. Holotype ♀ “ COSTA RICA: Guanacaste, Bagaces, P.N. Palo Verde, Estación Palo Verde , 10m, 10.x-10.xi.2000, I. Jiménez, LN 259050/388400, #60220” ( NHMUK).

Etymology. From the Latin sulcus = furrow, referring to the deep notauli.

Figures

Figs 158–163. Closterocerus spp. C. stigmalis – (158) habitus dorsal view, paratype ♀; (159) habitus lateral view, holotype ♀. C. sulcatus, holotype ♀ – (160) habitus dorsal view; (161) habitus lateral view; (162) head lateral view. C. arenalensis, holotype ♀ – (163) habitus lateral view.