Eriastichus hilaris, Hansson, 2021

Hansson, Christer, 2021, The genus Eriastichus La Salle (Hymenoptera, Eulophidae, Tetrastichinae) in the Neotropical region, introducing 48 new species, ZooKeys 1019, pp. 35-91 : 35

Eriastichus hilaris sp. nov. Figure 35

Type locality.

Costa Rica, San José, San Gerardo de Dota, 9°33'N, 83°47'W, 20-21.ii.2013, J.S. Noyes leg.

Type specimen.

Holotype male dried and glued to a paper card. Original labels: "Costa Rica, San José, San Gerardo de Dota, 20-21.ii.2013, J.S. Noyes, NHM (Ent) 2012-91", "HOLOTYPE Eriastichus hilaris Hansson" [red printed label], (NHMUK014431049).

Diagnosis

(male). Head black with part below antennal toruli pale brown, scape yellowish brown, pedicel pale brown, flagellum dark brown; ventral plaque on scape ca. 0.5 × as long as scape (Fig. 35 ), antenna with dorsobasal setae on F1 0.4 × as long as F1; gaster with lateral tufts of pale and flattened setae on Gt5-6.

Description

(male holotype NHMUK014431049). Length of body 1.7 mm. Head black with part below antennal toruli pale brown, scape yellowish brown, pedicel pale brown, flagellum dark brown, ventral plaque dark brown. Mesoscutum and mesoscutellum black with metallic tinges, dorsellum dark brown, propodeum black. Legs with hind coxa with basal ½ dark brown and apical ½ yellowish brown, remaining parts of legs yellowish brown. Gaster dark brown.

Head. Length/width in frontal view 0.8; width/length in dorsal view 2.0; POL/OOL 2.0; WM/MS 1.4; MS/HE 0.6; HE/head length in frontal view 0.5; widths head/mesoscutum 1.2. Antenna. Pedicel + flagellum length/mesoscutum width 1.9; pedicel + flagellum length/head width 1.7; lengths scape/ventral plaque 2.2; ventral plaque located above the middle of scape; scape length/width 2.9; lengths scape/head (dorsal view) 0.5; scape length/HE 0.9; length/width F1, F2, F3, F4, clava: 2.3, 2.4, 2.1, 2.2, 4.9; length dorsobasal setae on F1/length F1 0.4. Mesosoma. Length/width 1.6; mesoscutum length/width 0.5; mesoscutellum length/width 0.8; widths SMG/SLG 1.0; enclosed space between SMG length/width 2.4; lengths mesoscutum/mesoscutellum 1.2; lengths mesoscutellum/dorsellum 2.9; lengths mesosoma/gaster 0.8. Wings. CC length/width 17.3; lengths CC/MV 1.0; lengths MV/ST 2.2; lengths MV/PM 4.5; lengths PM/ST 0.5; submarginal vein with nine setae on dorsal surface. Gaster. With lateral tufts of pale and flattened setae on Gt5-6.

Figures

Figures 35 - 40. Eriastichus spp. head and antenna in lateral view, male holotypes 35 E. hilaris 36 E. maniatis 37 E. johnlasallei 38 E. nebulis 39 E. neonis 40 E. johnnoyesi.