Closterocerus complanatus, 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 : 39-40

Closterocerus complanatus sp.nov.

( Figs 75, 76 , 209 , 219 )

Diagnosis. Antenna flattened, scape widest at apex, all flagellomeres distinctly separated ( Fig. 76 , 219 ); pronotal collar with a rounded edge along anterior margin ( Fig. 75, 76 ); midlobe of mesoscutum with two pairs of setae ( Fig. 75 ); mesoscutum and mesoscutellum flattened ( Fig. 76 ); hind tarsus white ( Fig. 76 ); fore wing truncate and infuscate with two hyaline areas, one just below marginal vein and one band close to apical margin reaching from anterior to posterior margin of wing ( Figs 76 , 209 ); length of body female 1.2–1.4mm.

Female holotype: length of body 1.4mm.

Antenna dark brown. Frons golden-green. Vertex metallic bluish-purple. Mesoscutum and mesoscutellum metallic bluish-purple. Dorsellum and propodeum golden-purple. Coxae, femora and hind tibia dark brown, fore and mid tibiae white; fore tarsus infuscate, mid and hind tarsi white. Fore wing truncate and infuscate with two hyaline areas, one just below marginal vein and one band close to apical margin reaching from anterior to posterior margin of wing; hind wing hyaline. Petiole dark brown. Gt 1–2 metallic purple, remaining tergites dark brown with metallic tinges.

Antenna flattened, scape widest at apex. Frons with strong reticulation (but weaker than on vertex); frontofacial suture V-shaped; with upper border distinct. Vertex with strong reticulation. Subtorular sutures present. Occipital margin rounded.

Pronotal collar with a transverse and rounded edge along anterior margin. Mesoscutum and mesoscutellum with strong reticulation; notauli narrow and complete; midlobe of mesoscutum with two pairs of setae. Dorsellum convex and smooth. Propodeum with weak reticulation, partly smooth, without median carina; callus with two setae. Fore wing truncate; speculum closed; with a stigmal hairline and with radial cell bare.

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

Relative measurements: head length dorsal 15; head length frontal 21; head width 31.5; POL 7; OOL 3.5; lateral ocellus maximum width 2.5; eye length 16.5; malar space 6; mouth width 8; mesosoma length 42; mesosoma width 27; mesoscutellum length 15; mesoscutellum width 16.5; fore wing length 65; fore wing width 41; marginal vein length 38; postmarginal vein length 2; stigmal vein length 5.5; fore wing marginal fringe length 6; gaster length 47; gaster width 29.

Variation in paratype material. Length of body: 1.2–1.4mm. Vertex, mesoscutum and mesoscutellum metallic bluish-purple, or purple.

Male. Unknown.

Hosts. Unknown.

Distribution. Costa Rica.

Material examined.

Type material. Holotype ♀ “ COSTA RICA: San José, Zurqui de Moravia , 1600m, 10˚03’N, 84˚0’W, iii.1995, Hanson & Godoy” ( NHMUK) . Paratype: 1♀ from same locality as holotype but collected vi.1995 ( MZLU) .

Etymology. From the Latin complanatus = flattened, referring to the dorsoventrally flattened body.

Figures

Figs 70–76. Closterocerus spp. C. coffeellae, non-types – (70) habitus dorsal view, ♀; (71) habitus lateral view, ♀; (72) habitus dorsal view, ♂; (73) habitus lateral view, ♂; (74) hind leg, ♀. C. complanatus, holotype ♀ – (75) habitus dorsal view; (76) habitus lateral view.

Figs 205–213. Closterocerus spp., fore wing ♀ – (205) C. alpestris; (206) C. trimaculatus; (207) C. cinctipennis; (208) C. coffeellae; (209) C. complanatus; (210) C. deltoides; (211) C. mirandus; (212) C. nitidulus; (213) C. petiolatus.

Figs 214–223. Closterocerus spp. ♀ – 214–218. Fore wing – (214) C. platycerus; (215) C. scitulus; (216) C. triquetrus; (217) C. woolleyi; (218) C. whartoni. – 219–222.Antenna lateral view – (219) C. complanatus; (220) C. coffeellae; (221) C. deltoides; (222) C. nitidulus. – 223. C. mirandus ♀, head+antenna lateral view.