| Placosternus erythropus (Chevrolat, 1835) |
| Placosternus guttatus (Chevrolat, 1860) |
| Plagiohammus Dillon & Dillon, 1941 |
| Plagiohammus brunneus Dillon & Dillon, 1941 |
| Plagiohammus decorus Chemsak & Linsley, 1986 |
| Plagiohammus granulosus (Bates, 1885) |
| Plagiohammus imperator (Thomson, 1868) |
| Plagiohammus inermis (Thomson, 1857) |
| Plagiohammus laceratus (Bates, 1885) |
| Plagiohammus lacordairei (Thomson, 1860) |
| Plagiohammus lunaris (Bates, 1880) |
| Plagiohammus maculosus (Bates, 1880) |
| Plagiohammus mexicanus Breuning, 1950 |
| Plagiohammus niveus (Breuning, 1943) |
| Plagiohammus olivescens Dillon & Dillon, 1941 |
| Plagiohammus ornator (Bates, 1885) |
| Plagiohammus rotundipennis Breuning, 1950 |
| Plagiohammus sallei (Thomson, 1860) |
| Plagiohammus sargi (Bates, 1885) |
| Plagiohammus spinipennis (Thomson, 1860) |