Closterocerus verticillus, 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 : 82-83

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.

Figures

Figs 184–188. Closterocerus spp. C. variotinctus, paratype ♀ – (184) habitus dorsal view. C. verticillus, ♀ – (185) habitus dorsal view, paratype; (186) habitus lateral view, holotype. C. whartoni, ♀ – (187) habitus dorsal view, holotype; (188) habitus lateral view, holotype.