Closterocerus cincinnatus Girault, 1916

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 : 34-35

Closterocerus cincinnatus Girault

( Figs 61–64 )

Closterocerus utahensis cincinnatus Girault, 1916:47 . Holotype male, type locality: U.S.A., Ohio, Cincinnati , in USNM, examined.

Closterocerus cincinnatus Girault ; Hansson (1994:4).

Diagnosis. Antenna flattened, scape widest at apex ( Fig. 62 ); pronotum very short, pronotal collar without a carina along anterior margin ( Fig. 61 ); mesoscutum and mesoscutellum with very weak reticulation ( Figs 61, 63 ); fore wing with three infuscate bands ( Figs 61–63 ): one along apical margin, one below stigmal vein, one below marginal vein; legs with coxae, femora, mid and hind tibiae dark brown, fore tibia with basal one-half dark brown and apical one-half infuscate; fore tarsus infuscate, mid and hind tarsi white; body compact with a large head ( Fig. 61 ); length of body female 0.7–1.0mm, male 0.7mm.

Description (Mexican specimens, non-types). Length of body: 0.7–1.0mm.

Antenna dark brown. Frons dark brown with metallic green tinges. Vertex metallic purple. Mesoscutum, mesoscutellum, dorsellum and propodeum dark brown, anterior part of midlobe of mesoscutum and lateral parts of mesoscutellum metallic purple; mesoscutum and mesoscutellum golden-purple in some specimens. Legs with coxae, femora, mid and hind tibiae dark brown, fore tibia with basal one-half dark brown and apical one-half infuscate; fore tarsus infuscate, mid and hind tarsi white. Fore wing hyaline with three infuscate bands: one along apical margin, one below stigmal vein and one below median part of marginal vein, hind wing hyaline. Petiole dark brown. Gaster dark brown, tergites with metallic purple tinges.

Antenna flattened, scape widest in apical part. Frons with strong reticulation. Vertex with very strong mall-meshed reticulation. Frontofacial suture V-shaped. Subtorular sutures present. Occipital margin rounded.

Mesosoma: Pronotum very short, pronotal collar without a carina along anterior margin. Mesoscutum and mesoscutellum with very weak reticulation; mesoscutum with notauli distinct in anterior one-third, midlobe with two pairs of rather thick setae. Dorsellum convex with very weak reticulation. Propodeum smooth and shiny; callus with two setae. Fore wing with speculum closed; with a stigmal hairline and with radial cell bare.

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

Relative measurements: head length dorsal 12.5; head length frontal 17; head width 28; POL 6; OOL 3; lateral ocellus maximum width 1.5; eye length 14.5; malar space 2; mouth width 7; mesosoma length 25.5; mesosoma width 25; mesoscutellum length 14; mesoscutellum width 15.5; fore wing length 41; fore wing width 26; marginal vein length 23; postmarginal vein length 1.5; stigmal vein length 4; fore wing marginal fringe length 4.5; gaster length 30; gaster width 27.

Male ( Figs 63, 64 ). Length of body 0.7mm. Vertex, anterior part of mesoscutum and sides of mesoscutellum metallic green. Otherwise similar to female.

Hosts. Reared from cynipid galls ( Hymenoptera : Cynipidae ) on Quercus sp. ( Fagaceae ) ( Hansson 1994).

Distribution. Canada ( Hansson 1994), USA ( Girault 1916). New records: Guatemala, Mexico.

Material examined.

Type material. Holotype ♂ of Closterocerus utahensis cincinnatus ( USNM No. 19606) . Non-type material ( CNC, MZLU, TAMU). GUATEMALA: 1♀, Departamento Zacapa, 5km NW San Lorenzo , 12.vii.1986 (L. LeSage). MEXICO : 10♀, Michoacan, 10mi S Uruapan , 6.vii.1985 (J.B. Woolley) ; 1♀, Guerrero, 5.6mi NW El Ocotito , 3100’ [945m], 7.vii.1987 (J.B. Woolley) ; 1♂, Guerrero, 2mi E Ocotito , 11.vii.1985 (J.B. Woolley) ; 1♀, Guerrero, 17mi E Tixtla , 11.vii.1985 (Woolley & Zolnerowich) ; 1♀, Oaxaca, 3mi SE Matatlan, Micro-ondas Rd , 6650’, 17.vii.1987 (Woolley & Zolnerowich) ; 1♀, Oaxaca, 3.2mi SW La Cumbre , 8.vii.1985 (J.B. Woolley) ; 1♀, Oaxaca, 8mi NE El Punto , 18.vii.1985 (Woolley & Zolnerowich) .

Figures

Figs 59–64. Closterocerus spp. C. caelatus, holotype ♀ – (59) habitus dorsal view; (60) habitus lateral view. C. cincinnatus, non-types – (61) habitus dorsal view, ♀; (62) habitus lateral view, ♀; (63) habitus dorsal view, ♂; (64) habitus lateral view, ♂.