Omicron acapulcense- Omicron aequale
- Omicron aurantiopictum
- Omicron aviculum
- Omicron belti
- Omicron conclamatum
- Omicron criticum
- Omicron deplanatum
- Omicron elephas
- Omicron flavonigrum
- Omicron foxi
- Omicron furiosum
- Omicron globicolle
- Omicron gondwanianum
- Omicron graculum
- Omicron gribodoide
- Omicron histrionicum
- Omicron laevis
- Omicron lubricum
- Omicron nanum
- Omicron nymphale
- Omicron opifex
- Omicron paranymphum
- Omicron paraspegazzinii
- Omicron reguloide
- Omicron regulum
- Omicron rubellulum
- Omicron ruficolle
- Omicron tegulare
- Omicron thoracicum
- Omicron totonacum
- Omicron tuberculatum
- Omicron ypsilon