| Species | Recipient region | Date of the first record | |
|---|
| Tricellaria inopinata | Portugal / Madeira | 2011 |  |
| Tricellaria inopinata | Greece / Eastern Mediterranean | 2015 | |
| Tricellaria inopinata | France / North Sea | 2003 | |
| Tricellaria inopinata | Ireland | 2005 | |
| Tricellaria inopinata | United Kingdom (Britain) / Celtic seas | 1998 | |
| Tricellaria inopinata | United Kingdom (Britain) / English Channel | 1998 | |
| Tricellaria inopinata | United Kingdom (Britain) / North Sea / Orkney Islands | From 2014 | |
| Tricellaria inopinata | Belgium | 2000 | |
| Tricellaria inopinata | Netherlands | 2000 | |
| Tricellaria inopinata | Italy / Adriatic Sea | 1982 | |
| Tricellaria inopinata | Italy / Western Mediterranean | 2010 | |
| Tricellaria inopinata | Germany / North Sea | To 2009 | |
| Tricellaria inopinata | Spain / Iberian Coastal | To 2011 | |
| Tricellaria inopinata | Portugal / Iberian Coastal | To 2004 | |
| Tricellaria inopinata | Norway / Norwegian Sea | From 2014 | |
| Tricellaria inopinata | Portugal / Azores | To 2014 | |
| Tricellaria inopinata | France / Biscay Gulf | 2000 | |
| Tricellaria inopinata | France / English Channel | 2003 | |
