Sirex noctilio

Female: body black with dark blue or purple metallic reflections; head, thorax, antennae, and coxae black with dark blue metallic reflections. Genae with small pits about 3.0–9.0 pit diameters apart; vertex and postocellar area with pits 1.0–8.0 pit diameters apart, each pit diameter about 0.1–0.2 times lateral ocelli. Mesoscutum with large, shallow pits in median area, pits with more or less tooth-like process behind, teeth rarely fused transversally, without distinct transverse ridges. Metatibia 3.8–4.2 times as long as maximum width; basal part of metatibia with yellowish brown area about 2.0–3.0 times as long as minimum width of tibia. Metatarsomere 2 in lateral view 2.9–3.5 times as long as height, length about 1.1–1.4 times tarsomeres 3+4; tarsal pad of metatarsomere 2 0.3–0.4 times as long as ventral length of tarsomere. Abdomen: terga I–II and VIII (including sternum IX) blackish, III–VII light yellowish brown (tergum III sometimes black with dark purple metallic reflections). Median basin of tergum IX with basal width 0.9–1.1 times median length, maximum width about 1.1–1.3 times median length, median length 0.5–0.7 times cornus length. Cornus in dorsal view short, edges straight in basal half and slightly curved apically, median length about 1.0–1.2 times maximum width of abdomen at junction of terga IX and X.

Literature