Closterocerus apiculus, 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 : 22-23

Closterocerus apiculus sp.nov.

( Figs 36–39 )

Diagnosis. Antenna dark brown to black with F5 white, scape widest at apex, F1–3 flattened, F4 moderately flattened, F5 not flattened and long and narrow ( Fig. 37 ); pronotal collar without a carina along anterior margin ( Figs 36, 38 ); midlobe of mesoscutum with two pairs of ±strong setae ( Fig. 36 ); fore wing hyaline with apical margin and parts below stigmal vein weakly infuscate ( Figs 36, 37 ); hind tarsus white to yellowish ( Figs 37, 39 ); length of body female 0.8–1.2mm, male 0.7–0.9mm.

Female holotype: length of body 0.9mm.

Antenna dark brown with F5 white. Frons with lower one-half dark brown, upper one-half metallic pale blue. Vertex metallic bluish-purple. Mesoscutum metallic bluish-purple; mesoscutellum golden-green with lateral and posterior margins metallic purple; dorsellum and propodeum metallic purple. Legs with coxae dark brown; fore femur infuscate, mid and hind femora dark brown; fore and mid tibiae white, hind tibia dark brown; tarsi white to yellowish. Fore wing hyaline with apical margin and parts below stigmal vein weakly infuscate; hind wing hyaline. Petiole dark brown with metallic purple tinges. Gaster metallic bluish-purple with a large dark brown spot medially.Antenna predominantly flattened, except F5 that is narrow, scape widest at apex. Frons and vertex with strong reticulation. Frontofacial suture V-shaped. Subtorular sutures present. Occipital margin rounded.

Pronotal collar without a carina along anterior margin. Mesoscutum with strong reticulation; notauli distinct in anterior two-thirds; midlobe with two pairs of ±strong setae. Mesoscutellum with strong reticulation. Dorsellum convex and predominantly smooth. Propodeum smooth and shiny; propodeal 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 short ovate; Gt 1-3 smooth medially and with strong reticulation laterally, remaining tergites with strong reticulation.

Relative measurements: head length dorsal 12.5; head length frontal 17; head width 26.5; POL 4; OOL 2; lateral ocellus maximum width 2; eye length 14; malar space 2.5; mouth width 7.5; mesosoma length 28; mesosoma width 27; mesoscutellum length 11; mesoscutellum width 12.5; fore wing length 44; fore wing width 26; marginal vein length 21.5; postmarginal vein length 1.5; stigmal vein length 5; fore wing marginal fringe length 5; gaster length 31; gaster width 22.

Variation in paratype material. Length of body: 0.8–1.2mm. Vertex completely metallic purple or metallic purple in anterior one-half and metallic blue in posterior one-half. Mesoscutum metallic bluish-purple, or midlobe golden-green and sidelobes metallic purple. Mesoscutellum golden with lateral and posterior margins metallic blue, or golden-green with lateral and posterior margins metallic purple.

Male ( Figs 38, 39 ). Length of body: 0.7–0.9mm. Scape not expanded at apex, dorsal and ventral margins ±parallel. Mesoscutum with midlobe golden-green or metallic bluish-green, sidelobes metallic bluish-purple. Mesoscutellum golden. Hind femur and hind tibia dark brown with apical one-third white. Otherwise as in female.

Hosts. Unknown.

Distribution. Costa Rica, Mexico, Venezuela.

Material examined.

Type material. Holotype ♀ “ COSTA RICA: Puntarenas, San Vito, Las Cruces , 8º46’N, 82º57’W, 1300m, 15-16.ii.2006, J.S. Noyes ” ( NHMUK) . Paratypes (97♀ 27♂, CNC, MZLU, MZUCR, NHMUK, TAMU) : 1♀ with same label data as holotype ; 1♀ “ COSTA RICA: Puntarenas, R.P. Karen Mogensen , 9º52′N 85º03′W, 305m, 11-21.ii.2005, C. Hansson ”; following from same locality as previous but collected 14-15.ii.2005 (9♀), 17-18.ii.2011 (8♀ 3♂), 23-24.ii.2013 (3♀), 19-20.ii.2016 (13♀ 4♂), 11-12.ii.2018 (11♀ 6♂) ; 8♀ 3♂ “ COSTA RICA: Puntarenas, P.N. Corcovado, Sirena , 8º29’N, 83º35’W, 5m, 19-20.ii.2004, J.S. Noyes ” ; 14♀ 7♂ “ COSTA RICA: Puntarenas, P.N. Piedras Blancas , 100m, 8˚43’N, 83˚13’W, 13-14.ii.2012, J.S. Noyes, NHM (Ent) 2012- 91” ; 3♀ “ COSTA RICA: Alajuela, P.N. Arenal, Send. Ceibo , 10º27’N, 84º41’W, 22-23.ii.2016, J.S. Noyes, NHM (Ent) 2016-79” ; 2♀ “ COSTA RICA: Heredia, E.B. La Selva , 75m, 10º26’N, 84º01’W, 27-28.ii.2003, J.S. Noyes ” ; 4♀ from same locality as previous but collected 22-24.ii.2012 ; 2♀ 1♂ “ COSTA RICA: Limón, R.B. Hitoy-Cerere , 100m, 9˚40’N, 83˚02’W, 20-22.ii.2006, J.S. Noyes ” ; 12♀ 3♂ “ COSTA RICA: Turrialba, CATIE, Reventazon , 4.ix.1986, L. Masner ” ; 1♀ “ COSTA RICA: Manuel Antonio N.P. 23-28.viii.1986, L. Masner ” . 1♀ “ MEXICO, Chiapas, 6mi N Berriozabal , 4000´[1219m], 8-9.viii.1990, J.B. Woolley, 90/056” . 4♀ “ VENEZUELA: Araqua, Rancho Grande , 3650’ [1113m], 28.v.1990, J.B. Woolley, 90/003” .

Etymology. From the Latin apiculus = apex, apical, referring to the white apical flagellomere.

Figures

Figs 36–40. Closterocerus spp. C. apiculus – (36) habitus dorsal view, paratype ♀; (37) habitus lateral view, holotype ♀; (38) habitus dorsal view, paratype ♂; (39) habitus lateral view, paratype ♂. C. atrifasciatus, holotype ♀ – (40) habitus dorsal view.