Closterocerus cymatilis, 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 : 44-45

Closterocerus cymatilis sp.nov.

( Figs 85–87 )

Diagnosis. Antenna dark brown with flagellum and scape narrow, pedicel flattened with a sharp edge along dorsal and ventral margins ( Fig. 87 ); pronotal collar without a carina along anterior margin ( Figs 85, 86 ); midlobe of mesoscutum with three pairs of setae ( Fig. 85 ); fore wing hyaline with area below stigmal vein and along apical margin infuscate ( Fig. 85 ); hind tarsus white ( Figs 85, 86 ); length of body female 1.0– 1.2mm, male 0.8–1.1mm.

Female holotype: length of body 1.2mm.

Antenna dark brown. Frons golden-green. Vertex metallic purple. Mesoscutum metallic blue, anterior one-half metallic purple. Mesoscutellum metallic blue with purple tinges in posterior part. Dorsellum metallic purple. Propodeum metallic blue. Legs with coxae and femora dark brown; fore and mid tibiae dark brown in basal one-half and white in apical one-half, hind tibia dark brown with apical one-third white; fore tarsus infuscate, mid and hind tarsi white. Fore wing hyaline with area below stigmal vein and along apical margin infuscate; hind wing hyaline. Petiole dark brown. Gaster with Gt 1 metallic blue, Gt 2,3.5 metallic blue laterally and dark brown medially, Gt 4,6,7 dark brown.

Antenna with flagellum and scape narrow, pedicel flattened with a sharp edge along dorsal and ventral margins. 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 three pairs of short setae. Mesoscutellum with strong reticulation, with weak reticulation along posterior margin. Dorsellum convex with very weak reticulation, partly smooth. Propodeum with very weak reticulation, without median carina; callus with two setae. Fore wing speculum closed; with a stigmal hairline and with radial cell bare.

Petiole very short, just a transverse strip. Gaster ovate; tergites with weak reticulation.

Relative measurements: head length dorsal 13; head length frontal 26; head width 32.5; POL 7; OOL 2.5; lateral ocellus maximum width 2.5; eye length 17.5; malar space 6.5; mouth width 8.5; mesosoma length 38.5; mesosoma width 26; mesoscutellum length 15.5; mesoscutellum width 16; fore wing length 60; fore wing width 36; marginal vein length 32; postmarginal vein length 2; stigmal vein length 6; fore wing marginal fringe length 3.5; gaster length 42; gaster width 30.

Variation in paratype material. Length of body: 1.0– 1.2mm. Mesoscutum metallic blue with anterior one-half metallic purple, or entirely metallic blue. Gt 1 metallic blue or purple.

Male ( Fig. 86 ). Length of body 0.8–1.1mm. Vertex, mesoscutum and mesoscutellum golden-green; dorsellum metallic blue. Otherwise similar to female.

Hosts. Unknown.

Distribution. Mexico.

Material examined.

Type material. Holotype ♀ “ MEXICO: Puebla, 4.7mi. SW La Cumbre , 5100’ [1555m], 23.vii.1987, J.B. Woolley, 87/055” ( TAMU) . Paratypes (2♀ 3♂, MZLU, TAMU) : 1♀ 1♂ with same label data as holotype ; 1♀ “ MEXICO: Michoacan, 10mi. S Uruapan , 6.vii.1985, J.B. Woolley, 85/032” ; 2♂ “ MEXICO: Guerrero, 4.5mi. NW El Ocotito , 2800’ [853m], 7.vii.1987, J.B. Woolley, 87/018” .

Etymology. From the Latin cymatilis = sea-coloured, blue, referring to colour on thoracic dorsum.

Comments. The holotype has the head detached from the body and glued separately on the same card, and also lacks left wing pair.

Figures

Figs 83–87. Closterocerus spp. C. cuspidis, holotype ♀ – (83) habitus dorsal view; (84) habitus lateral view. C. cymatilis – (85) habitus dorsal view, holotype ♀; (86) habitus dorsal view, paratype ♂; (87) head frontal view, holotype ♀.