Closterocerus tischeriae, 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 : 76-77

Closterocerus tischeriae sp.nov.

( Figs 167–169 , 174 )

Diagnosis. Antenna flattened with all flagellomeres distinctly separated, scape widest at apex ( Fig. 174 ); frons with upper border distinct; pronotal collar with a carina along anterior margin ( Fig. 168 ); midlobe of mesoscutum with one pair of strong setae ( Fig. 168 ); fore wing hyaline with three infuscate bands, one along apical margin, one below stigmal vein and one below marginal vein

( Figs 167, 168 ); hind tarsus with T1&4 black, T2&3 white; length of body female 1.1–1.7mm, male 0.8–1.1mm.

Female holotype: length of body 1.5mm.

Antenna dark brown. Frons black with golden-green tinges. Vertex black with metallic purple tinges. Mesoscutum with midlobe golden and sidelobes metallic bluish-purple. Mesoscutellum golden with lateral and posterior margins metallic bluish-purple. Dorsellum golden with blue tinges. Propodeum black with metallic purple tinges, median part golden-green. Coxae, femora, mid and hind tibiae dark brown; fore tibia white with base brown; fore tarsus pale brown, mid and hind tarsi with T1&4 dark brown, T2&3 white. Fore wing hyaline with three infuscate bands, one along apical margin, one below stigmal vein and one below marginal vein; hind wing hyaline. Petiole dark brown. Gaster metallic purple.

Antenna flattened, scape widest at apex. Frons with strong reticulation; frontofacial suture Vshaped; frons with upper border distinct. Vertex with strong reticulation in anterior one-half, with very weak reticulation to smooth in posterior one-half. Subtorular sutures present. Occipital margin rounded.

Pronotal collar with a carina along anterior margin. Mesoscutum with strong reticulation; notauli distinct in anterior one-half; midlobe with one pair of strong setae attached in posterior part. Mesoscutellum convex, with weak reticulation. Dorsellum convex with weak reticulation. Propodeum smooth, without median carina; callus with two setae. Fore wing speculum closed; with a stigmal hairline and with radial cell bare.

Petiole very short, just a narrow band. Gaster ovate-elongate; Gt 1-2 smooth, remaining tergites with weak reticulation.

Relative measurements: head length dorsal 19; head length frontal 23; head width 40; POL 7; OOL 5; lateral ocellus maximum width 2.5; eye length 19; malar space 5.5; mouth width 10; mesosoma length 47; mesosoma width 33; mesoscutellum length 18.5; mesoscutellum width 20; fore wing length 65; fore wing width 36; marginal vein length 40; postmarginal vein length 2; stigmal vein length 4.5; fore wing marginal fringe length 5; gaster length 55; gaster width 35.

Variation in paratype material. Length of body: 1.1–1.7mm. Vertex with posterior one-half metallic purple, anterior one-half golden-green. Midlobe of mesoscutum golden-purple. Mesoscutellum golden-purple. Gaster golden-purple.

Male ( Figs 167, 169 ). Length of body: 0.8–1.1mm. Vertex black with metallic purple tinges or golden-green; with strong reticulation in anterior one-half, with very weak reticulation to smooth in posterior one-half or with very weak reticulation throughout. Mesoscutum with midlobe golden and sidelobes metallic bluish-purple, or entirely golden-purple. Mesoscutellum golden with lateral and posterior margins metallic bluish-purple, or entirely golden-purple.

Hosts. Reared from Tischeria sp. ( Lepidoptera : Tischeriidae ) on Cecropia insignis ( Cecropiaceae ).

Distribution. Costa Rica.

Material examined.

Type material. Holotype ♀ “ COSTA RICA: Heredia, E.B. La Selva, 50-150m, 10º25’N, 84º01’W, 8.xi.1998; L.M. LaPierre, #98.180, ex Tischeria sp. on Cecropia insignis ” ( NHMUK) . Paratypes (23♀ 7♂, CNC, MZLU, MZUCR, NHMUK) : 4♀ 1♂ with same label data as holotype; following from same locality and host as holotype but collected 21.ii.1998 (5♀ 1♂), ii.2000 (7♀ 3♂) ; 7♀ 1♂ “ COSTA RICA: Alajuela, vic. Boca Tapada de San Carlos , 250m, 10º40’N, 84º12’W, 20.iii.1999, L.M. LaPierre, #99.121, ex Tischeria sp. on Cecropia insignis ” ; 1♂ from same locality and host as previous but collected 20.iv.1999 .

Etymology. Named after host.

Figures

Figs 164–170. Closterocerus spp. C. tapantibius, ♀ – (164) habitus dorsal view, holotype; (165) habitus lateral view, paratype; (166) vertex, holotype. C. tischeriae – (167) habitus lateral view, paratype ♂; (168) habitus dorsal view, paratype ♀; (169) habitus dorsal view, paratype ♂. C. triquetrus, paratype ♂ – (170) habitus dorsal view.

Figs 171–177. Closterocerus spp. C. trimaculatus – (171) habitus dorsal view, paratype ♀; (172) habitus lateral view, paratype ♀; (173) habitus lateral view, paratype ♂. C. tischeriae, holotype ♀ – (174) habitus lateral view. C. triquetrus – (175) habitus dorsal view, holotype ♀; (176) habitus lateral view, holotype ♀; (177) head frontal view, paratype ♂.