Lygyromorphus = Diploa
| Nom valide | Diploa |
| Citation | Lygyromorphus |
| Auteur, année | Arrow, 1901 |
| Bibliographie | On a new genus and two new species of african cetonids. |
| Référence | The Annals and Magazine of natural History, including Zoology, Botany and Geology, London, 7 (8) : 257-259. |
| Génotype | Lygyromorphus rufiventris Arrow, 1901 |
| Page | 257 |
| Désignation | Désignation originale |