Euplectrus roysnellingi Hansson

Female. Length of body 2.3 mm. Antenna with scape yellowish-white in basal ½ and yellowish-brown in apical ½, pedicel yellowish-brown, flagellomeres 1–4 dark brown with ventral part yellowish-brown, 5–6 dark brown (Fig. 335). Mandibles and palpi white. Head black and shiny, lower face with median part yellowish-brown, pale part reaching slightly outside of level of outer lateral margin of toruli, with parts between pale area and eyes black (Fig. 333). Frons close to eyes with one irregular row of setae (Fig. 339). Vertex with very weak reticulation (Fig. 340). Occipital margin with a weak carina behind ocellar triangle (Fig. 340). Mesosoma black and shiny (Fig. 332). Each sidelobe of mesoscutum with 12 setae. Scutellum 0.8× as long as wide; with very weak reticulation, meshes slightly elongate (Fig. 341). Dorsellum without a groove or foveae along anterior margin (Fig. 782). Propodeum smooth (Fig. 782); anteromedially with a strongly transverse triangular cup that is 0.3× as long as wide; propodeal callus with nine setae. Legs (Fig. 332): fore and mid coxa yellowish-white, remaining parts of fore and mid legs and entire hind leg yellowish-brown. Fore wing: costal cell with two irregular and sparse rows of setae on ventral surface, and margin with three setae close to marginal vein; with 21 admarginal setae, partly in two rows. Gaster dark brown, anterior ½ with a large yellowish-white spot (Fig. 334), and with tergites 5–6 reddish-brown posteromedially. Ratios. HE/MS/WM = 2.6/1.0/1.4; POL/OOL/POO = 5.0/3.0/1.0; OOL/DO = 1.4; WE/WF/WH/HH = 1.0/2.0/3.7/2.8; WH/WT = 1.0; PM/ST = 1.9; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 4.4/2.2/8.0/2.4/1.9/1.0/1.9; LP/WP = 1.0; MM/LG = 1.3. Male. Unknown.

Costa Rica (Guanacaste Province).