Closterocerus tumidus, 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 : 80-81

Closterocerus tumidus sp.nov.

( Figs 178–181 )

Diagnosis. Female antenna with scape slightly flattened, widest medially, pedicel and flagellum not flattened ( Fig. 179 ); male scape strongly inflated ( Fig.181 ), ca 2× as long as wide; pronotal collar without a carina along anterior margin ( Figs 178, 180 ); midlobe of mesoscutum with three pairs of short setae ( Fig. 178 ); mesoscutum and mesoscutellum metallic purple with strong and dense reticulation ( Fig. 178 ); fore wing hyaline with apical margin and part below stigmal vein infuscate ( Fig. 179 ); hind tarsus with T1–3 white, T4 pale brown ( Fig. 179 ); length of body female 1.1–1.2mm, male 0.8–1.3mm.

Female holotype: length of body 1.2mm.

Antenna with scape, pedicel and F1 dark brown, F2–5 pale brown. Frons golden-green. Vertex metallic purple. Mesoscutum, mesoscutellum and dorsellum metallic purple. Propodeum dark brown with golden-green tinges. Coxae and femora dark brown; fore and mid tibiae infuscate with base darker, hind tibia dark brown with apex white; fore tarsus pale brown, mid and hind tarsi with T1–3 white and T4 pale brown. Fore wing hyaline with apical margin and part below stigmal vein infuscate; hind wing hyaline. Petiole dark brown. Gaster dark brown with metallic tinges.

Antenna with scape slightly flattened, widest medially, pedicel and flagellum not flattened. Frons with strong reticulation; frontofacial suture V-shaped. Vertex with strong reticulation. Subtorular sutures missing. Occipital margin rounded.

Pronotal collar without a carina along anterior margin. Mesoscutum and mesoscutellum with strong reticulation; notauli distinct in anterior one-half; midlobe of mesoscutum with three pairs of short setae. Dorsellum convex with weak reticulation. Propodeum smooth, without median carina; callus with two setae. Fore wing speculum closed; without a stigmal hairline and with radial cell ±hairy.

Petiole very short, just a narrow band. Gaster oval-shaped; Gt 1 smooth, remaining tergites with very weak reticulation.

Relative measurements: head length dorsal 15.5; head length frontal 24; head width 32; POL 7; OOL 3.5; lateral ocellus maximum width 2; eye length 16; malar space 6.5; mouth width not measurable; mesosoma length 41; mesosoma width 31; mesoscutellum length 17; mesoscutellum width 18.5; fore wing length 69; fore wing width 39; marginal vein length 33.5; postmarginal vein length 2; stigmal vein length 5; fore wing marginal fringe length 5; gaster length 45; gaster width 30.

Variation in paratype material. Length of body 1.1–1.2mm. The paratype is similar to the holotype.

Male ( Figs 180, 181 ). Length of body 0.8–1.3mm. Scape strongly inflated, pale brown with dorsal part dark brown. Vertex metallic purple, or with anterior one-half metallic blue and posterior one-half metallic purple. Mesoscutum metallic bluish-green, or metallic purple. Mesoscutellum golden, or golden-red. Propodeum metallic purple. Otherwise as in female.

Hosts. Unknown.

Distribution. Peru.

Material examined.

Type material. Holotype ♀ “ PERU: Cusco, Ollantaytambo , 19.xii.1983, L. Huggert ” ( MZLU) . Paratypes 1♀ 9♂ with same label data as holotype ( MZLU) .

Etymology. From the Latin tumidus = swollen, referring to the inflated male scape.

Figures

Figs 178–183. Closterocerus spp. C. tumidus – (178) habitus dorsal view, holotype ♀; (179) habitus lateral view, holotype ♀; (180) habitus dorsal view, paratype ♂; (181) habitus lateral view, paratype ♂. C. variotinctus – (182) habitus lateral view, paratype ♀; (183) habitus lateral view, paratype ♂.