Pristaulacus watanabei Turrisi & Smith 2011
This treatment diagnoses Pristaulacus watanabei from a female holotype collected in Phu Ruea National Park, Loei. The wasp is about 10 mm long, predominantly black with reddish-orange parts, and has a clear wing with a substigmal spot, a U-shaped occipital groove, a four-toothed tarsal claw, a slender petiole and an ovipositor 1.5 times the forewing length. It is placed in the P. comptipennis group; its host is unknown.