Eriastichus decoris, 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 decoris sp. nov. Figures 3 , 18

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 decoris Hansson" [red printed label], (NHMUK014431026).

Diagnosis

(male). Head black and antenna dark brown; ventral plaque on scape ca. 0.3 × as long as scape (Fig. 18 ), antenna with dorsobasal setae on F1 0.5 × as long as F1; gaster with lateral tufts of pale and flattened setae on Gt5-6.

Description

(male holotype NHMUK014431026). Length of body 2.3 mm. Head black, antenna dark brown, ventral plaque black. Mesoscutum and mesoscutellum black with metallic tinges, dorsellum and propodeum black. Legs with coxae, hind femur and 4th tarsomere on all legs dark brown, fore femur pale brown, trochanters, tibiae, mid femur, and tarsomeres 1-3 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 1.5; MS/HE 0.6; HE/head length in frontal view 0.5; widths head/mesoscutum 1.2. Antenna. Pedicel + flagellum length/mesoscutum width 2.1; pedicel + flagellum length/head width 2.1; lengths scape/ventral plaque 3.1; ventral plaque located below the middle of scape; scape length/width 3.4; lengths scape/head (dorsal view) 0.5; scape length/HE 0.9; length/width F1, F2, F3, F4, clava: 3.7, 4.0, 3.7, 3.7, 7.9; length dorsobasal setae on F1/length F1 0.5. Mesosoma. Length/width 1.6; mesoscutum length/width 0.7; mesoscutellum length/width 0.8; widths SMG/SLG 1.1; enclosed space between SMG length/width 2.5; lengths mesoscutum/mesoscutellum 1.6; lengths mesoscutellum/dorsellum 2.6; lengths mesosoma/gaster 0.7. Wings. CC length/width 18.0; lengths CC/MV 0.9; lengths MV/ST 2.3; lengths MV/PM 3.8; lengths PM/ST 0.6; submarginal vein with nine setae on dorsal surface. Gaster. With lateral tufts of pale and flattened setae on Gt5-6.

Figures

Figures 1 - 6. Eriastichus spp. 1 E. eleagnis, body in lateral view, male paratype 2 E. sp., body in lateral view, female 3 E. decoris, gaster in lateral view, male holotype 4 E. sp., right fore wing, female 5 E. fenestris, body in dorsal view, male holotype 6 E. sp., thoracic dorsum, female.

Figures 18 - 27. Eriastichus spp. head and antenna in lateral view, male holotypes 18 E. decoris 19 E. denotatis 20 E. dotaensis 21 E. derilis 22 E. diadrys 23 E. ebulis 24 E. egrestis 25 E. ellipsis 26 E. drupis 27 E. eleagnis.