Alternative combination: Poroblattina longinqua
Full reference: S. H. Scudder. 1895. Revision of the American fossil cockroaches with descriptions of new forms. Bulletin of the United States Geological Survey 124:1-176
Sister taxon: Ametroblatta strigosa
Type specimen: Coll Huston 111, a tegmen (fragment). Its type locality is Willis Creek near Steubenville, which is in a Stephanian terrestrial shale in the Conemaugh Formation of Ohio.
Average measurements (in mm): tegmen 22.0 x 8.5