Closterocerus tumidus Hansson 2022, sp.nov.
Creators: name: Hansson, Christer
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Eulophidae
Closterocerus
Closterocerus tumidus

description: 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.
description: Published as part of Hansson, Christer, 2022, Eulophidae Of Costa Rica (Hymenoptera: Chalcidoidea), 4 The Genus Closterocerus Westwood S. Str., pp. 1-137 in Taxonomic Monographs on Neotropical Hymenoptera (Oxford, England) (Oxford, England) 1 (1) on pages 80-81, DOI: 10.5281/zenodo.6464279