There were 2 illustrations found for P. von Knorring
2 960902 Sonerila anaimudica Lundin & B. Nord.Novon, vol. 19 : p. 77, fig. 1 (2009) [P. von Knorring]
2 960909 Sonerila coriacea Lundin & B. Nord.Novon, vol. 19 : p. 78, fig. 2 (2009) [P. von Knorring]