Placosternus difficilis (Chevrolat, 1862)
| XXVII. Notice of a small collection of Coleoptera from Jamaica, with descriptions of new species from the West Indies. By Chas. O. Waterhouse (1878) Transactions of The Royal Entomological Society of London 26: 303-311 | |
| Food-Habits of North American Cerambycidæ William Beutenmuller (1896) Journal of The New York Entomological Society 4: 73-81 | |
| Central Texas Coleoptera W Knaus (1905) The Canadian Entomologist, Ontario 37: 348-352 | |
| Collecting notes on Coleoptera W Knaus (1906) The Canadian Entomologist, Ontario 38: 145-148 | |
| Proceedings of the New York Entomological Society (1912) Journal of The New York Entomological Society 20: 197-223 | |
| Proceedings of the New York Entomological Society (1917) Journal of The New York Entomological Society 25: 240-245 | |
| An annotated list of the Cerambycidæ of California. (Continued from page 177.) R Garnett (1918) The Canadian Entomologist, Ontario 50: 205-213 | |
| Report of Committee on Common Names of Economic Insects in Hawaii P H Timberlake, E M Ehrhorn and O H Swezey (1921) Proceedings of the Hawaiian Entomological Society 4: 607-609 | |
| Notes on Some Longicorns from Subtropical Texas (Coleop.: Cerambycidae) E Linsley (1933) Entomological News, Philadelphia 44: 178-183 |