Sirex juvencus

Female. Body length not given. Head, thorax, coxae, and abdomen black with dark blue metallic reflections; abdominal segments II–VIII with dark purple metallic reflections. Antennae with basal half yellowish. Genae with pits 0.1–5.0 pit diameters apart; vertex with pits less than 3.0 pit diameters apart, each pit diameter 0.11–0.32 times lateral ocellus diameter. Mesoscutum with coarse, net-like pits in median area, transverse or longitudinal ridge indistinct or absent. Metatibia about 3.9–4.0 times as long as maximum width. Metatarsomere 2 in lateral view 2.0–2.5 times as long as height, length about 1.1–1.3 times length of tarsomeres 3+4; tarsal pad of metatarsomere 2 about 0.7 times as long as ventral length of tarsomere. Abdomen: median basin of tergum IX with basal width 0.8–0.9 times median length, maximum width 1.0–1.2 times median length, median length 0.7–0.8 times cornus length. Cornus in dorsal view long and thick, with edges straight and curved apically, clearly angled at about 1/6 of basal junction, its median length 1.2–1.3 times maximum width of abdomen at junction of terga IX and X.

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