pustulose

Towards the suture the elytron is raised so as to form a very prominent keel down the back of elytra; the general surface of the elytra is somewhat pustulose, and there are three slightly elevated, longitudinal lines, nearly meeting (but indistinctly) behind on the convex part of each elytron.

Journals of Two Expeditions of Discovery in North-West and Western Australia, Volume 2 George Grey 1855