Euplectrus platyhypenae Howard 1885

Female. Length of body 2.1 mm. Antenna with scape yellowish-white in basal ½ and yellowish-brown in apical ½, pedicel yellowish-brown, flagellomeres yellowish-brown ventrally and dark brown dorsally (Fig. 641). Mandibles and palpi yellowish-white. Head including lower face black and shiny (Fig. 637). Frons close to eyes with two irregular rows of setae (Fig. 492). Vertex with very weak reticulation, smooth lateral to posterior ocelli (Fig. 493). Occipital margin rounded (Fig. 493). Mesosoma black and shiny (Fig. 636). Each sidelobe of mesoscutum with eight setae. Scutellum 0.9× as long as wide; with weak reticulation (Fig. 494). Dorsellum along anterior margin with a very narrow groove that is divided by longitudinal carinae (Fig. 796), groove medially 0.1× as long as length of dorsellum. Propodeum with very weak reticulation (Fig. 796); anteromedially with a triangular cup; propodeal callus with 15 setae. Legs yellowish-brown (Fig. 636). Fore wing: costal cell with one complete row of setae on ventral surface, and margin with three setae close to marginal vein; with 18 admarginal setae mainly in one row, in apical ⅓ in two rows. Gaster yellowish-brown with lateral margins black (Fig. 639). Ratios. HE/MS/WM = 1.5/1.0/1.0; POL/OOL/POO = 6.1/3.6/1.0; OOL/DO = 1.5; WE/WF/WH/HH = 1.0/2.8/4.6/3.4; WH/WT = 1.1; PM/ST = 1.4; TS1/TS2/LT/LT1/LT2/LT3/LT4 = 4.7/2.4/7.8/3.1/1.6/1.0/1.9; LP/WP = 0.6; MM/LG = 1.0. Male. Length of body 1.7 mm. Scape yellowish-white, slightly expanded and widest in the middle (Fig. 643), sensory pores confined to apicoventral ⅔. Similar to female except gaster shorter and black with a large yellowish-white spot in apical ½ (Fig. 640). Ratios. LC/WS = 3.1; MM/LG = 1.3.

USA (D.C.) (Howard 1885), Costa Rica (Guanacaste Province) (new record).