Closterocerus crinitus, 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 : 42-43

Closterocerus crinitus sp.nov.

( Figs 81, 82 )

Diagnosis. Antenna flattened, scape widest in upper-median part ( Fig. 82 ); pronotal collar without a carina along anterior margin ( Fig. 82 ); midlobe of mesoscutum without setae ( Fig. 82 ); mesoscutellum with weak reticulation ( Fig. 82 ); fore wing narrow, 2.3× as long as wide, with long marginal fringe ( Fig. 81 ); wings weakly infuscate ±throughout ( Fig. 81 ); legs yellowish-white with hind coxa predominantly dark brown ( Figs 81, 82 ); length of body female 0.9–1.0mm.

Female holotype: length of body 0.9mm.

Antenna dark brown. Frons golden with area above frontofacial suture metallic purple. Vertex metallic bluish-green with metallic purple tinges. Mesoscutum with midlobe metallic bluish-green, sidelobes metallic purple. Mesoscutellum metallic bluish-green with medio-anterior one-half golden-red. Dorsellum and propodeum metallic bluish-purple. Legs yellowish-white, except hind coxa that is predominantly dark brown. Wings weakly infuscate throughout. Petiole black with metallic tinges. Gaster with Gt 1 metallic bluish-purple, remaining tergites golden-purple.

Antenna flattened, scape widest in upper-median part. Frons with strong reticulation. Vertex with very weak reticulation and shiny. Frontofacial suture V-shaped. Subtorular sutures present. Occipital margin rounded.

Pronotal collar without a carina along anterior margin. Mesoscutum with rather strong reticulation on midlobe, sidelobes with weak reticulation; notauli distinct in anterior one-third; midlobe without setae. Mesoscutellum convex with weak reticulation. Dorsellum flat and smooth. Propodeum smooth and shiny; callus with two setae. Fore wing narrow with long marginal fringe, speculum closed; with a stigmal hairline and with radial cell bare.

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

Relative measurements: head length dorsal 11.5; head length frontal 16.5; head width 22; POL 4; OOL 2.5; lateral ocellus maximum width 2; eye length 13; malar space 3; mouth width 6; mesosoma length 27; mesosoma width 21; mesoscutellum length 12; mesoscutellum width 12; fore wing length 54; fore wing width 23.5; marginal vein length 28; postmarginal vein length 2; stigmal vein length 4; fore wing marginal fringe length 11; gaster length 28; gaster width 16.

Variation in paratype material. Length of body: 0.9–1.0mm. Midlobe of mesoscutum metallic bluish-green or golden-green. Mesoscutellum metallic bluish-green with medio-anterior one-half golden-red or golden-green. Wings weakly infuscate throughout or hyaline without infuscation.

Male. Unknown.

Hosts. Unknown.

Distribution. Costa Rica.

Material examined.

Type material. Holotype ♀ “ COSTA RICA: Cartago, P.N. Tapanti, 9º45′N, 83º47′W, 1200-1550m, 20.iii- 10.iv.2000, C. Hansson & D. Rubí ” ( MZLU) . Paratypes: 10♀ with same label data as holotype ( MZLU, MZUCR, NHMUK) .

Etymology. From the Latin crinitus = fringed, referring to the long marginal fringe in fore wing.

Figures

Figs 77–82. Closterocerus spp. C. concinnus – (77) habitus dorsal view, holotype ♀; (78) habitus lateral view, paratype ♀. C. crassicornis, holotype ♀ – (79) habitus dorsal view; (80) habitus lateral view. C. crinitus, holotype ♀ – (81) habitus dorsal view; (82) habitus lateral view.