Closterocerus lineatus, 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 : 58-59

Closterocerus lineatus sp.nov.

( Figs 117–120 )

Diagnosis. Antenna not flattened, scape narrow with dorsal and ventral margins ±parallel-sided ( Fig. 118 ); scape dark brown with upper one-third whitish, border between dark brown and white sharp ( Figs 118, 120 ); pedicel and F1–3 dark brown, F4–5 whitish ( Figs 118, 120 ); vertex, mesoscutum and mesoscutellum with same colour, metallic blue to purple, with very strong and dense reticulation ( Fig. 117 ); pronotal collar without a carina along anterior margin ( Fig. 117 ); midlobe of mesoscutum with two pairs of short setae and with strongly curved notauli ( Fig. 117 ); fore wing hyaline with area below stigmal vein infuscate ( Fig. 120 ); legs predominantly white ( Figs 118, 120 ); length of body female 0.7–1.1mm, male 0.8–0.9mm.

Female holotype: length of body 0.9mm.

Antenna with scape dark brown with upper one-third white and with border between dark brown and white sharp, pedicel and F1–3 dark brown, F4–5 whitish. Frons metallic bluish-green. Vertex metallic purple. Mesoscutum, mesoscutellum and dorsellum metallic bluish-purple. Propodeum metallic purple. Legs with fore coxa dark brown with metallic tinges on outer part and white on inner part, mid coxa white with base dark brown, hind coxa metallic bluish-green; fore and mid femora, tibiae and tarsi white; hind femur white upper-basal one-half brownish, hind tibia white with basal one-third brownish, hind tarsus white. Fore wing hyaline with area just below stigmal vein infuscate, hind wing hyaline. Petiole black with metallic tinges. Gaster metallic bluish-purple with a large dark brown median spot.

Antenna not flattened, scape narrow with dorsal and ventral margins ±parallel-sided. Frons with strong reticulation. 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 one-half; midlobe with two pairs of short setae. Mesoscutellum convex, with strong reticulation. Dorsellum convex with strong reticulation. Propodeum with very weak reticulation and shiny; 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; all tergites with strong reticulation.

Relative measurements: head length dorsal 14; head length frontal 16; head width 17.5; POL 4; OOL 2.5; lateral ocellus maximum width 2.5; eye length 15; malar space 2; mouth width 6; mesosoma length 27; mesosoma width 21; mesoscutellum length 10.5; mesoscutellum width 12; fore wing length 40; fore wing width 23.5; marginal vein length 16; postmarginal vein length 1.4; stigmal vein length 4; fore wing marginal fringe length 3; gaster length 29; gaster width 20.

Variation in paratype material. Length of body: 0.7–1.1mm. Mesoscutum and mesoscutellum metallic bluish-purple or purple; mesoscutellum with slightly different colour than vertex and mesoscutum in a few paratype specimens.

Male ( Figs 119, 120 ). Length of body: 0.8–0.9mm. Vertex metallic bluish-purple. Mesoscutum

with midlobe metallic blue, sidelobes metallic bluish-purple. Mesoscutellum metallic blue with medio-anterior one-half blackish with golden tinges. Dorsellum and propodeum metallic purple. Sculpture as in female.

Hosts. Reared from Brachys sp. ( Coleoptera : Buprestidae ) on an unidentified Zingiberaceae ( Costa Rica); Pachyscelus sp. ( Coleoptera : Buprestidae ) on Terminalia catappa ( Combretaceae ) ( Costa Rica), Leucoptera coffeella ( Lepidoptera : Lyonetiidae ) ( Nicaragua).

Distribution. Costa Rica, Honduras, Nicaragua.

Material examined.

Type material. Holotype ♀ “ COSTA RICA: Guanacaste, R.V.S. Bosque Diriá, 10º10’N, 85º36’W 700m, 14-15.ii.2011, J.S. Noyes, NHM (Ent) 2011-93” ( NHMUK) . Paratypes (181♀, 4♂, CNC, MZLU, MZUCR, NHMUK) : 25♀ with same label data as holotype ; 10♀ “ COSTA RICA: Guanacaste, P.N. Santa Rosa, Bosque Humedo , 10°51’N, 85°37’W, 300m, 23.ii.2009, J.S.Noyes ” ; 2♀ “ COSTA RICA: Guanacaste, Santa Rosa N.P., 300m, 2-23.iii.1986, D.H. Janzen, & I.D. Gauld ” ; 4♀ “ COSTA RICA: Guanacaste, Estación Maritza, ( ACG), 10˚58’N, 85˚29’W, 700m, 21.ii.2005, J.S. Noyes ” ; 2♀ “ COSTA RICA: Guanacaste, Z.P. Nosara, Sendero La Ceiba , LN221100/ 382950, 600m, 20.iii.2002, I. Jimenez ” ; 1♀ “ COSTA RICA: Guanacaste, Bagaces, P.N.Palo Verde, Sct. PaloVerde, Extremo E Campo Aterrizaje, LN388400/250050, 10m, 10.i-9.ii.2001, I Jimenez” ; 7♀ 4♂ “ COSTA RICA: Alajuela, P.N. Arenal, Send. Ceibo , 10º27’N, 84º41’W, 22-23.ii.2016, J.S. Noyes, NHM (Ent) 2016-79” ; 1♀ “ COSTA RICA: Alajuela, P.N. Arenal, 10˚28’N, 84˚45’W, 617m, 21-28.ii.2005, C. Hansson ” ; 2♀ “ COSTA RICA: Alajuela, Estación Pilón, 10º43’N, 85º59’W, 12-18.ii.2004, C. Hansson & J.A. Azofeifa ” ; 1♀ from same locality as previous but collected 15.iii-5.iv.2001 ; 1♀ “ COSTA RICA: Alajuela, 7km N Boca Tapada, Laguna Lagarto Lodge , 55m, 10˚41’N, 84˚11’W, 18-19.ii.2018, J.S. Noyes, NHM (Ent) 2018-87” ; 1♀ “ COSTA RICA: Alajuela, vicinity of Boca Tapada de San Carlos , 250m, 10º40’N, 84º12’W, 9.iv.1999, L.M. La Pierre, #99.279, ex Brachys sp. on Zingiberaceae ” ; 1♀ “ COSTA RICA: Cartago, Turrialba, P.N. Barbilla , 3km SE de Estacion, LN217200/598500, 500-600m, 19.viii-20.ix.2000, E. Rojas ” ; 1♀ “ COSTA RICA: Cartago, Turrialba, CATIE, Reventazon , 4.ix.1986, L. Masner ” ; 2♀ “ COSTA RICA: Heredia, La Selva , 10º26’N, 84º01’W, 75m, 28-29.ii.2008, J.S. Noyes ”; following from same locality as previous but collected ii.1991 (1♀), 23-24.ii.2005 (1♀), 22-24.ii.2012 (1♀) ; 1♀ ” COSTA RICA: Heredia, Santo Domingo , INBio-Parque, 13.ii.2016, J.S. Noyes ” ; 2♀ “ COSTA RICA: Limón, R.B. Hitoy-Cerere, 100m, 9˚40’N, 83˚02’W, 24-25.ii.2004, J.S. Noyes ”; following from same locality as previous but collected 20-22.ii.2006 (3♀), 24-26. ii.2008 (1♀) ; 14♀ “ 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 (28♀), 17-18.ii.2011 (11♀), 23-24.ii.2013 (5♀), 19-20.ii.2016 (10♀), 11-12.ii.2018 (14♀) ; 2♀ “ COSTA RICA: Puntarenas, P.N. Corcovado, Sirena , 8º29’N, 83º35’W, 5m, 19-20.ii.2004, J.S. Noyes ” ; 1♀ “ COSTA RICA: Puntarenas, P.N. Corcovado, Estación Leona, Sendero Toma de Agua , 4m, 18.ii.2002, S. Madrigal ” ; 10♀ “ COSTA RICA: Puntarenas, San Vito, Las Cruces , 8º47’N, 82º58’W, 1000-1300m, 7-19.ii.2007, C. Hansson ”; following from same locality as holotype but collected 15-16.ii.2006 (3♀), 19-29.ii.2008 (1♀), 15-16.ii.2012 (1♀) ; 1♀ “ COSTA RICA: Puntarenas, Estación Altamira, Send. Los Gigantes, 1450m, 9º02’N, 83º00’W, 7.ii-5.iii.2002, C. Hansson & Parataxonomos” ; 1♀ ” COSTA RICA: Puntarenas, Estación Altamira, Send. a Casa Coca , 1450-1700m, 9º02’N, 83º00’W, 7.ii-5.iii.2002, C. Hansson & Parataxonomos” ; 2♀ ” COSTA RICA: Puntarenas, E.B. San Miguel , 9º34’N, 85º08’W, 2.xii.1998, L.M. LaPierre, #98.225, Pachyscelus sp. on Terminalia catappa ” ; 3♀ “ COSTA RICA: Puntarenas, Manuel Antonio N.P. 23-28.viii.1986, L. Masner ” . 2♀ ” HONDURAS: Cortés, P.N. Cusuco, 5km N Buenos Aires , 15º29’N, 83º13’W, 8.iii.1997, C. Hansson ” . 1♀ “ NICARAGUA: Carazo, San Marcos , 11.iii.1998, A de la Llana, ex. Leucoptera coffeella ” .

Etymology. From the Latin linea = line, referring to the white dorsal line on antennal scape.

Figures

Figs 117–122. Closterocerus spp. C. lineatus – (117) habitus dorsal view, holotype ♀; (118) habitus lateral view, holotype ♀; (119) habitus dorsal view, paratype ♂; (120) habitus lateral view, paratype ♂. C. latiscapus, holotype ♀ – (121) habitus lateral view. C. masneri, paratype ♀ – (122) habitus lateral view.