Hi Larry; your specimen does not resemble any of the three described species of Pseudoplanodes; at most a weak resemblance to P. xenoceroides (Heller, 1923). (And in fact the wing pattern resembles that of certain Anthribidae)
Photo in Cahiers Magellanes (NS) n° 25, p.18 f. 10 (as Cacia triangularis Breuning, 1980).
Larry, I hadn't seen the post on the Forum ; however I think I can confirm what I had already noticed: a Pseudoplanodes close to Pseudoplanodes xenoceroides (Heller, 1923) but different...