Closterocerus albicrus, 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 : 16-17

Closterocerus albicrus sp.nov.

( Figs 197, 198 )

Diagnosis. Antenna dark brown with F5 pale brown, scape widest at apex, F1–3 flattened, F4 moderately flattened, F5 not flattened and long and narrow ( Figs 197, 198 ); pronotal collar without a carina along anterior margin ( Fig. 197 ); midlobe of mesoscutum with one pair of ±strong setae ( Fig. 197 ); fore wing weakly infuscate ( Fig. 198 ); legs predominantly white with hind coxa dark brown at base ( Fig. 198 ); length of body female 0.9–1.1mm.

Female holotype: length of body 0.9mm.

Antenna dark brown with F5 pale brown. Frons below frontofacial suture golden-green, above suture metallic purple. Vertex metallic bluish-green. Mesoscutum golden-green; mesoscutellum golden-green with median part golden-red; dorsellum and propodeum golden-green. Legs white with fore tarsus infuscate and hind coxa dark brown in basal one-half. Fore wing weakly infuscate; hind wing hyaline. Petiole dark brown with metallic tinges. Gaster metallic bluish-green with median part golden-red.

Antenna predominantly flattened, except F5 which is narrow, scape widest just below apex. Frons with strong reticulation. Vertex with very weak reticulation, partly smooth. Frontofacial suture ±straight. Subtorular sutures present. Occipital margin rounded.

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

Petiole transverse and smooth. Gaster ovate; Gt 1-3 smooth medially and with strong reticulation laterally, remaining tergites with strong reticulation.

Relative measurements: head length dorsal 11; head length frontal 15; head width 23; POL 4.5; OOL 2.5; lateral ocellus maximum width 2; eye length 12; malar space 2.5; mouth width 5.5; mesosoma length 27; mesosoma width 18; mesoscutellum length 10; mesoscutellum width 10.5; fore wing length 48.5; fore wing width 23; marginal vein length 22.5; postmarginal vein length 2.5; stigmal vein length 4; fore wing marginal fringe length 7; gaster length 33; gaster width 17.

Variation in paratype material. Length of body: 1.1mm. The paratype is similar to the holotype.

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) . Paratype 1♀ with same label data as holotype ( MZLU) .

Etymology. From the Latin albus = white and crus = leg.

Figures

Figs 195–199. Closterocerus spp. C. byrrus, holotype ♀ – (195) habitus dorsal view; (196) habitus lateral view. C. albicrus, holotype ♀ – (197) habitus dorsal view; (198) habitus lateral view. C. purpureus, holotype ♀ – (199) habitus dorsal view (excluding head). The image of C. purpureus (type no. 5.1299) are ©The Trustees of the Natural History Museum, London, and made available to you under Creative Commons License 4.0 (https://creativecommons.org/licenses/by/4.0/).