Eriastichus scalaris, 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 scalaris sp. nov. Figure 52

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 scalaris Hansson" [red printed label], (NHMUK014431067).

Diagnosis

(male). Head dark brown with part below antennaltoruli pale brown, scape pale brown, pedicel and flagellum brown; ventral plaque on scape ca. 0.4 × as long as scape (Fig. 52 ), antenna with dorsobasal setae on F1 1.0 × as long as F1; gaster with lateral tufts of pale and flattened setae on Gt5-6.

Description

(male holotype NHMUK014431067). Length of body 1.5 mm. Head dark brown with part below antennaltoruli pale brown, scape pale brown, pedicel and flagellum brown, ventral plaque dark brown. Mesoscutum, mesoscutellum and propodeum dark brown, dorsellum pale brown. Legs with fore and mid coxae pale brown, hind coxa and hind femur dark brown, remaining parts of legs yellowish brown. Gaster dark brown.

Head. Length/width in frontal view 0.8; width/length in dorsal view 2.1; POL/OOL 2.0; WM/MS 1.4; MS/HE 0.7; HE/head length in frontal view 0.5; widths head/mesoscutum 1.1. Antenna. Pedicel + flagellum length/mesoscutum width 2.0; pedicel + flagellum length/head width 1.7; lengths scape/ventral plaque 2.5; ventral plaque located in the middle of scape; scape length/width 3.1; lengths scape/head (dorsal view) 0.5; scape length/HE 1.0; length/width F1, F2, F3, F4, clava: 2.5, 2.3, 2.5, 2.5, 5.8; length dorsobasal setae on F1/length F1 1.0. Mesosoma. Length/width 1.6; mesoscutum length/width 0.7; mesoscutellum length/width 0.5; widths SMG/SLG 0.9; enclosed space between SMG length/width 2.4; lengths mesoscutum/mesoscutellum 1.5; lengths mesoscutellum/dorsellum 3.0; lengths mesosoma/gaster 0.8. Wings. CC length/width 16.0; lengths CC/MV 1.0; lengths MV/ST 2.2; lengths MV/PM 7.1; lengths PM/ST 0.3; submarginal vein with seven setae on dorsal surface. Gaster. With lateral tufts of pale and flattened setae on Gt5-6.

Figures

Figures 51 - 56. Eriastichus spp. head and antenna in lateral view, male holotypes 51 E. sannionis 52 E. scalaris 53 E. taraxis 54 E. renodis 55 E. tendrilis 56 E. velaminis.