Publication
Hoch H. & Howarth F. G. 1999 - Multiple cave invasions by species of the planthopper genus Oliarus in Hawaii (Hornoptera: Fulgoroidea: Cixiidae. Zoological Journal of the Linnean Society. London 127: 453-475.
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| Oliarus gagnei Hoch & Howarth, 1999 | |||
| Oliarus kalaupapae Hoch & Howarth, 1999 | |||
| Oliarus lorettae Hoch & Howarth, 1999 | |||
| Oliarus makaiki Hoch & Howarth, 1999 | |||
| Oliarus polyphemus Fennah, 1973 | |||
| Oliarus waikau Hoch & Howarth, 1999 | |||