Euplectrus frontalis Howard 1885

Female. Length of body 2.5 mm (estimated as the female examined lacks head). Head missing in holotype female. Mesosoma black and shiny (Fig. 716). Each sidelobe of mesoscutum with 12 setae. Scutellum 1.0× as long as wide; with engraved rather strong reticulation, meshes slightly elongate, posterior margin smooth. Dorsellum anteriorly with a narrow groove, medially 0.3× as long as length of dorsellum, part behind groove with very weak reticulation. Propodeum with very weak reticulation; anteromedially with a very short and wide cup, 0.3× as long as wide; propodeal callus with 14 setae. Legs yellowish-white (Fig. 716). Wings missing holotype female. Gaster yellowish-brown with dark brown lateral margins and with a round dark brown spot posteromedially (Fig. 718). Ratios. TS1/TS2/LT/LT1/LT2/LT3/LT4 = 2.7/1.5/5.7/1.3/1.2/1.0/1.7; LP/WP = 0.5; MM/LG = 1.3. Male. Length of body 2.1 mm. Antenna with scape yellowish-white, expanded apically, sensory area with same colour as remaining scape; pedicel and basal three flagellomeres yellowish-brown, apical three flagellomeres missing in examined male (Fig. 719). Mandibles and palpi yellowish-white. Head dark reddish-brown, lower face yellowish-brown with a narrow dark stripe between pale area and eye margin, dark stripe about as wide as ½ the diameter of one torulus, and with part between antennal scrobes reddish-brown (Fig. 717). Frons close to eyes with two irregular rows of setae. Vertex with very weak reticulation inside ocellar triangle, outside ocellar triangle smooth. Occipital margin rounded. Fore wing: costal cell with two irregular and sparse rows of setae on ventral surface, and margin with five setae close to marginal vein; with 17 admarginal setae, in one row. Gaster with anterior ½ white with dark brown lateral margins and posterior ½ dark brown. Otherwise similar to female. Ratios. HE/MS/WM = 2.9/1.0/1.8; POL/OOL/POO = 6.3/3.0/1.0; OOL/DO = 0.8; WE/WF/WH/HH = 1.0/2.1/4.3/3.0; LC/WS = 3.6; WH/WT = 1.1; PM/ST = 1.4; MM/LG = 1.3.

USA (Virginia) (Howard 1885).