Pachyprotasis erraticus F. Smith, 1874, lectotype

Thorax : two longitudinal oblique lines on the mesothorax, the tegulæ, scutellum and two minute spots behind it, testaceous ; wings hyaline and iridescent, the nervures black ; the legs with a black line above, the pectus with two ovate spots, and a longitudinal line beneath the wings (which unites with two perpendicular lines), testaceous. Abdomen : a triangular spot on the first segment, and a short transverse line in the middle of the apical margins of the third and fourth segments, white.

Hab. —Hakodadi. This species is extremely like the European P. simulans." Smith, F. 1874: Descriptions of new species of Tenthredinidae, Ichneumonidae, Chrysididae, Formicidae &c. of Japan. - Transactions of the Entomological Society of London for the Year 1874, (3): 373-409, p. 377. Redescription: Kirby, W. F. 1882: List of Hymenoptera with Descriptions and Figures of the Typical Specimens in the British Museum. 1.

Tenthredinidae and Siricidae. - London, by order of the Trustees 1: 1-450, p. 278, Plate X. fig. 16.