BioStor
 | February 6, 1877 Osbert Salvin (1877) Proceedings of The Zoological Society of London 1877: 42-94 |
 | On the coleopterous insects of Galapagos Islands Martin L Linell (1898) Proceedings of The United States National Museum 21: 249-268 |
 | The Coleoptera of the Galápagos Islands Van Dyke Edwin Cooper (1953) Occasional Papers of the California Academy of Sciences, San Francisco 22: 1-181 |