Closterocerus brevipes, 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 : 30-31

Closterocerus brevipes sp.nov.

( Figs 53–57 )

Diagnosis. Antenna flattened, scape widest at apex in female ( Fig. 54 ), slightly below apex in male ( Fig. 56 ); flagellum dark brown ( Figs 54, 56 ); pronotal collar with a sharp carina along anterior margin ( Figs 53, 55 ); midlobe of mesoscutum with three pairs of short setae; fore wing infuscate with an unbroken subapical hyaline band and with a bare area below marginal vein hyaline ( Fig. 54 ); legs predominantly dark brown, mid and hind tarsi with T1&4 dark brown, T2&3 white ( Figs 54, 56 ); hind leg with tibia stout, 4.5× as long as wide, and tarsus with T1–3 very short so that T4 is as long as T1–3 combined ( Fig. 57 ); length of body female 1.2–1.9mm, male 0.9–1.5mm. Similar to C. coffeellae but with hind tibia and tarsus shorter, and male with reticulation on mesoscutum and mesoscutellum weaker.

Female holotype: length of body 1.6mm.

Antenna dark brown. Frons and vertex black with metallic tinges. Mesoscutum golden-purple. Mesoscutellum golden-purple with lateral and posterior margins metallic purple. Dorsellum and propodeum golden-purple. Coxae, femora, mid and hind tibiae dark brown; fore tibia whitish with base dark brown; fore tarsus infuscate, mid and hind tarsi with T1&4 dark brown, T2&3 white. Fore wing infuscate with an unbroken subhyaline band and with a bare area below marginal vein hyaline, hind wing hyaline. Petiole black. Gaster golden-purple with sides of Gt 1-2 with metallic purple tinges.

Antenna flattened. Frons with strong reticulation. Frontofacial suture V-shaped. Subtorular sutures present. Vertex with strong reticulation in anterior one-half, with very weak reticulation in posterior one-half. Occipital margin rounded.

Pronotal collar with carina along anterior margin. Mesoscutum with strong reticulation; notauli distinct and complete; midlobe of mesoscutum with three pairs of very short setae. Mesoscutellum with strong reticulation, lateral and posterior margins with weak reticulation. Dorsellum convex and smooth. Propodeum with some irregular sculpture on median part, otherwise smooth; 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 1,2,6,7 smooth and shiny, Gt 3-5 with weak reticulation.

Relative measurements: head length dorsal 19.5; head length frontal 26; head width 41.5; POL 7; OOL 4.5; lateral ocellus maximum width 3; eye length 21; malar space 5; mouth width 11; mesosoma length 48; mesosoma width 36; mesoscutellum length 20; mesoscutellum width 22; fore wing length 65; fore wing width 40; marginal vein length 37; postmarginal vein length 4; stigmal vein length 5; fore wing marginal fringe length 5; gaster length 51; gaster width 41.

Variation in paratype material. Length of body: 1.2–1.9mm. Vertex with strong reticulation in anterior one-half and very weak reticulation in posterior one-half, or completely with strong reticulation. Notauli metallic or white. Mesoscutum golden-purple or metallic purple. Mesoscutellum golden-purple with lateral and posterior margins metallic purple, or metallic purple.

Male ( Figs 55, 56 ). Length of body: 0.9–1.5mm. Scape less wide at apex. Vertex black with golden-green tinges, with very weak reticulation. Midlobe of mesoscutum golden-purple, with weak reticulation, sidelobes metallic bluish-purple with strong reticulation. Mesoscutellum golden-purple with lateral margins golden-green, with weak reticulation. Dorsellum metallic purple. Propodeum golden-purple. Otherwise as in female.

Hosts. Reared from leafminers on Cecropia insignis & C. obtusifolia ( Cecropiaceae ): unidentified species of Pachyscelus ( Coleoptera : Buprestidae ) and Tischeria ( Lepidoptera : Tischeriidae ); Phyllocnistis sp. ( Lepidoptera : Gracillariidae ) on Trichilia havanensis ( Meliaceae ); Tachygonus sp. ( Coleoptera : Curculionidae ) on Lonchocarpus costaricensis (Leguminosae) .

Distribution. Costa Rica.

Material examined.

Type material. Holotype ♀ “ COSTA RICA: Heredia, E.B. La Selva, 50-150m, 10º26’N, 84º01’W, xi.1999, #99.831, L.M. LaPierre ”, “Ex Pachyscelus sp. on Cecropia insignis ” ( NHMUK) . Paratypes (12♀ 12♂, CNC, MZLU, MZUCR, NHMUK) : 2♀ with same label data as holotype ; 2♀ 3♂ “ COSTA RICA: Heredia, E.B. La Selva, 50-150m, 10º26’N, 84º01’W, xi.1999, #99.842, L.M. LaPierre ”, “Ex Tischeria sp. on Cecropia insignis ” ; 2♀ from same locality and host as previous but collected ii.2000 ; 1♀ 2♂ “ COSTA RICA: Alajuela, vicinity of Boca Tapada de San Carlos , 250m, 10º40’N, 84º12’W, 21-22.iii.1999, L.M. La Pierre, #99.249, ex Tischeria sp. on Cecropia insignis ” ; 1♂ “ COSTA RICA: Alajuela, Cabro Muco , 10º43’N, 85º09’W, 1100m, 13.ii.2004, C. Hansson & J.A. Azofeifa ” ; 1♀ “ COSTA RICA: Cartago, Turrialba , CATIE, 600m, 09º54’N, 83º38’W, 3.ii.1998, L.M. La Pierre, #CR98.33, ex Buprestidae leafminer on Cecropia insignis ” ; 1♀ “ COSTA RICA: Cartago, San Ramon 3 Rios, 1500m, 2.vi.90, P. Hanson ” ; 1♀ “ COSTA RICA: Heredia, 6km ENE Vara Blanca , 10˚11’N, 84˚07’W, 2000m, ii.2002, 20/TN/ALL, INBio, OET, ALAS” ; 1♂ “ COSTA RICA: Puntarenas, upper San Luis Valley , 100m, 10º15’N, 84º45’W, 23.ix.1999, #99.468, L.M. LaPierre, ex Pachyscelus sp. on Cecropia obtusifolia ” ; 1♂ “ COSTA RICA: Puntarenas, E.B. San Miguel, 0-50m, 09º34’N, 85º08’W, 2.xii.1998, #98.226, L.M. LaPierre, ex Tachygonus sp. on Lonchocarpus costaricensis ”; 1♀ Puntarenas, San Luis de Monteverde & vicinity, 50-150m, 10º17’N, 84º49’W, viii.1997, L.M. LaPierre”, “ Coleoptera leafminer on Cecropia obtusifolia ” ; 1♀ “ COSTA RICA: San José, San Pedro, UCR Campus , 1100m, 4.v.2000, K. Nishida, ex Phyllocnistis sp. on Trichilia havanensis ” .

Etymology. From the Latin brevis = short and pes = foot, referring to the short hind tarsus.

Figures

Figs 53–58. Closterocerus spp. C. brevipes – (53) habitus dorsal view, holotype ♀; (54) habitus lateral view, holotype ♀; (55) habitus dorsal view, paratype ♂; (56) habitus lateral view, paratype ♂; (57) hind leg, holotype ♀. C. barbatus, holotype ♀ – (58) head frontal view.