Tetrastichus splendens, Hansson & Schmidt, 2020

Hansson, Christer & Schmidt, Stefan, 2020, A revision of European species of the genus Tetrastichus Haliday (Hymenoptera: Eulophidae) using integrative taxonomy, Biodiversity Data Journal 8, pp. 59177-59177 : 59177

Tetrastichus splendens sp. n.

Description

FEMALE holotype (Fig. 35). Body length 2.3 mm. Head. Width/length in dorsal view 2.3, width/length in frontal view 1.2, POL/OOL 2.1, widths head/mesosoma 1.0, mouth width/malar space 1.0, malar space/eye height 0.9. Antenna. Scape length/eye height 1.1, pedicel+flagellum length/mesosoma width 1.1, length/width F1, F2, F3 1.7, 1.6, 1.3, clava length/width 2.5, lengths pedicel/F1 0.7, lengths F1/F2 1.1, F1/F3 1.3, lengths F1, F2, F3/clava 0.5, 0.5, 0.4, width F1/pedicel (dorsal view) 1.2, lengths antennal spicule/C3 0.1. Mesosoma. Length/width 1.5, mesoscutal mid-lobe length/width 0.9 (width measured in anterior part), mid-lobe with a weak median groove that is missing in anterior ¼, with four adnotaular setae on each side, lengths mesoscutum/mesoscutellum (measured medially) 1.3, mesoscutellum length/width 1.1, length/width of enclosed space between submedian grooves 3.5, distance between SMG/distance between SMG and SLG 1.1, lengths dorsellum/propodeum 0.5, propodeum with strong reticulation, propodeal callus with five setae. Fore wing. Costal cell length/width 8.8, lengths costal cell/marginal vein 1.2, lengths marginal/stigmal veins 2.2. Gaster. Semicircular, length/width 1.2, lengths gaster/mesosoma 1.0, Gt7 length/width 0.5, lengths longest cercal seta/next longest seta 1.3, longest cercal seta straight, ovipositor sheaths not reaching apex of Gt7.

Colour. Body golden-green, scape yellow, pedicel yellowish-brown, flagellum dark brown, tegulae black with metallic tinges, wings hyaline, wing venation yellowish-white, coxae concolorous with body, trochanters dark brown, femora dark brown with golden-green tinges and with apex yellowish-brown, fore tarsus dark yellowish-brown, mid and hind tarsi yellowish-brown with T4 dark brown.

MALE. Unknown.

Diagnosis

Flagellum short and stout, length/width F1, F2, F2, clava: 1.7, 1.6, 1.3, 2.5; malar space 0.9 × eye height; mesoscutellum with ratio length/width of enclosed space between submedian grooves 3.5.

Etymology

Named for the shiny appearance, from the Latin Tetrastichus splendens = shiny.

Distribution

Sweden.

Host

Unknown.

Material examined

Holotype ♀ "SWEDEN, Skåne, Lund V., RN 1334/6176, 24.vi.1983, C. Hansson" (MZLU).