1. Species Tenellia acinosa (Risbec, 1928)
2. Species Tenellia adspersa (von Nordmann, 1845)
3. Species Tenellia casha (Gosliner & R. J Griffiths, 1981)
4. Species Tenellia columbiana (O'Donoghue, 1922)
5. Species Tenellia fuscata (A. Gould, 1870)
6. Species Tenellia gotlandica Lundin, Malmberg, Martynov & Korshunova, 2022
7. Species Tenellia ivetteae Gosliner & Bertsch, 2017
8. Species Tenellia kanga (Edmunds, 1970)
9. Species Tenellia melanobrachia (Bergh, 1874)
10. Species Tenellia ornata (Baba, 1937)
11. Species Tenellia albocrusta (MacFarland, 1966) accepted as Trinchesia albocrusta (MacFarland, 1966)
12. Species Tenellia caerulea (Montagu, 1804) accepted as Trinchesia caerulea (Montagu, 1804)
13. Species Tenellia chaetopterana Ekimova, Deart & Schepetov, 2017 accepted as Phestilla chaetopterana (Ekimova, Deart & Schepetov, 2017)
14. Species Tenellia flavovulta (MacFarland, 1966) accepted as Diaphoreolis flavovulta (MacFarland, 1966)
15. Species Tenellia foliata (Forbes & Goodsir, 1839) accepted as Trinchesia foliata (Forbes & Goodsir, 1839)
16. Species Tenellia fulgens (MacFarland, 1966) accepted as Zelentia fulgens (MacFarland, 1966)
17. Species Tenellia genovae (O'Donoghue, 1926) accepted as Trinchesia genovae (O'Donoghue, 1926)
18. Species Tenellia gymnota (Couthouy, 1838) accepted as Catriona gymnota (Couthouy, 1838)
19. Species Tenellia lagunae (O'Donoghue, 1926) accepted as Diaphoreolis lagunae (O'Donoghue, 1926)
20. Species Tenellia lenkae (Martynov, 2002) accepted as Trinchesia lenkae Martynov, 2002
21. Species Tenellia lugubris (Bergh, 1870) accepted as Phestilla lugubris (Bergh, 1870)
22. Species Tenellia maua (Er. Marcus & Ev. Marcus, 1960) accepted as Catriona maua Ev. Marcus & Er. Marcus, 1960
23. Species Tenellia mediterranea A. Costa, 1866 accepted as Tenellia adspersa (von Nordmann, 1845) (synonym)
24. Species Tenellia minor (Rudman, 1981) accepted as Phestilla minor Rudman, 1981
25. Species Tenellia pallida (Alder & Hancock, 1845) accepted as Tenellia adspersa (von Nordmann, 1845) (synonym)
26. Species Tenellia poritophages (Rudman, 1979) accepted as Phestilla poritophages (Rudman, 1979)
27. Species Tenellia punicea (Millen, 1986) accepted as Cuthonella punicea (Millen, 1986)
28. Species Tenellia pustulata (Alder & Hancock, 1854) accepted as Zelentia pustulata (Alder & Hancock, 1854)
29. Species Tenellia sibogae (Bergh, 1905) accepted as Phestilla sibogae Bergh, 1905
30. Species Tenellia speciosa (Macnae, 1954) accepted as Trinchesia speciosa (Macnae, 1954)
31. Species Tenellia viridis (Forbes, 1840) accepted as Diaphoreolis viridis (Forbes, 1840)

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