Closterocerus platycerus, 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 : 68-69

publication ID	https://doi.org/ 10.5281/zenodo.6464279
publication LSID	lsid:zoobank.org:pub:FE033A11-ACCB-4C6D-B185-63420F8CA79B
DOI	https://doi.org/10.5281/zenodo.10165092
persistent identifier	https://treatment.plazi.org/id/83A34431-F7E3-464A-87C9-07D38CAD08AB
taxon LSID	lsid:zoobank.org:act:83A34431-F7E3-464A-87C9-07D38CAD08AB
treatment provided by	Felipe
scientific name	Closterocerus platycerus
status	sp.nov.

Treatment

Closterocerus platycerus sp.nov.

( Figs 135 View Figs 130–136 , 141, 142 View Figs 137–142 , 214 View Figs 214–223 , 225 View Figs 224–232 , 235 View Figs 233–238 )

Diagnosis. Antenna flattened, scape widest at apex ( Figs 142 View Figs 137–142 , 225 View Figs 224–232 ); upper frons with an edge separating it from vertex ( Fig. 235 View Figs 233–238 ); pronotal collar with a carina along anterior margin ( Fig. 141 View Figs 137–142 ); mesoscutum and mesoscutellum with very weak reticulation and shiny ( Fig. 141 View Figs 137–142 ); midlobe of mesoscutum without setae ( Fig. 141 View Figs 137–142 ); fore wing infuscate with basal one-half and two subapical spots hyaline, speculum open below ( Figs 142 View Figs 137–142 , 214 View Figs 214–223 ); hind tarsus with T1 infuscate, T2–4 white ( Fig. 142 View Figs 137–142 ); petiole as long as wide; gaster circular ( Fig. 141 View Figs 137–142 ); length of body female 1.4–1.7mm, male 1.1mm.

Female holotype: length of body 1.6mm.

Antenna dark brown to black. Frons golden-green. Vertex metallic bluish-purple. Mesoscutum metallic bluish-green with posterior one-half of midlobe golden-red. Mesoscutellum metallic blue with anteromedian one-half golden-red. Dorsellum metallic bluish-purple. Propodeum metallic purple. Coxae, femora and hind tibia dark brown; fore and mid tibiae infuscate; fore tarsus infuscate, mid tarsus white, hind tarsus with T1 infuscate, T2–4 white. Fore wing infuscate with basal one-half and two spots close to apical margin hyaline; hind wing hyaline. Petiole black. Gaster with Gt 1-2 metallic bluish-purple, remaining tergites dark brown.

Antenna flattened, scape widest at apex. Frons with strong reticulation; frontofacial suture Vshaped; part above suture with distinct margin separating it from vertex. Vertex with strong reticulation in anterior one-half, posterior one-half with very weak reticulation, partly smooth. Subtorular sutures missing. Occipital margin with an edge behind ocellar triangle.

Pronotal collar with a carina along anterior margin. Mesoscutum and mesoscutellum with very weak reticulation and shiny; notauli distinct in anterior one-half; midlobe of mesoscutum without setae. Dorsellum convex and smooth. Propodeum with a median carina in posterior two-thirds, otherwise smooth; callus with two setae. Fore wing speculum open below; with a stigmal hairline and with radial cell bare.

Petiole as long as wide, with strong sculpture on dorsal surface. Gaster circular.

Relative measurements: head length dorsal 21; head length frontal 24; head width 40; POL 6; OOL 4,4; lateral ocellus maximum width 3; eye length 19.5; malar space 6.5; mouth width 11; mesosoma length 52; mesosoma width 34; mesoscutellum length 20; mesoscutellum width 20; fore wing length 80; fore wing width 42; marginal vein length 50; postmarginal vein length 2; stigmal vein length 5; fore wing marginal fringe length 6; gaster length 47; gaster width 40.

Variation in paratype material. Length of body: 1.4–1.7mm. Vertex metallic bluish-purple, golden-green, or with anterior one-half metallic purple and posterior one-half metallic bluish-green.

Male ( Fig. 135 View Figs 130–136 ). Length of body 1.1mm. Entire vertex with very weak reticulation and metallic purple. Otherwise as in female.

Hosts. Unknown.

Distribution. Costa Rica.

Material examined.

Type material. Holotype ♀ “ COSTA RICA: Alajuela, Peñas Blancas , 700m, 18.viii.1986, L. Masner ” ( CNC) . Paratypes (2♀ 1♂, MZLU. NHMUK) : 1♂ “ COSTA RICA: Alajuela, P.N. Arenal, La Peninsula, 10˚27’N, 84˚45’W, 600m, 25.ii.2003, J.S. Noyes ” ; 1♀ “ COSTA RICA: Alajuela, P.N. Arenal, 10˚28’N, 84˚45’W, 617m, 21-28.ii.2005, C. Hansson ” ; 1♀ “ COSTA RICA: Alajuela, San Carlos, Sendero Pilón , 650m, 6-14.xi.2000, G. Carballo, LN 458050_269200, #60086” .

Etymology. From the Greek platys = broad, flat and keras = horn, antenna, referring to the flattened antenna.