Boris Büche det., who writes "It is, insofar known, the first North American observation of an Australian native." Additional ID notes are here. Photographed on Spotted Gum, Corymbia (formerly Eucalyptus) maculata, a commonly planted Australian tree in so. CA. According to this paper (translated from spanish), the larvae bore into developing seeds on Eucalyptus.

Needs new species, genus, tribe, and subfamily pages within the Ptinidae