Aulacus douglasi Jennings, Austin & Stevens, 2004

Jennings, John T., Parslow, Ben A. & Austin, Andrew D., 2018, Systematics of the parasitoid wasp genus Aulacus Jurine (Hymenoptera: Evanioidea: Aulacidae) from Australia, Zootaxa 4538 (1), pp. 1-113 : 37

Aulacus douglasi Jennings, Austin & Stevens, 2004

Aulacus douglasi Jennings et al. 2004a: 116 ; Jennings 2010 [on-line checklist].

This species from Wubin, Western Australia, was described recently by Jennings et al. (2004a). In addition to the description in Jennings et al. (2004a), the ovipositor guide is medial and oblique.

Aulacus douglasi keys out in a group together with A. pallidus and A. tiernyi , all of which have a medial and oblique ovipositor guide. Aulacus douglasi is a large species, length 16.5 mm, excluding ovipositor, whereas the other two species are much smaller— A. pallidus length 6.8 mm, excluding ovipositor and A. tiernyi length 7.6 (6.5–8.25) mm, excluding ovipositor. There are also colouration differences (see key).