| Species | Recipient region | |
|---|
| Acromegalomma claparedei | Italy / Adriatic Sea |  |
| Bispira polyomma | Italy / Adriatic Sea | |
| Branchiomma bairdi | Italy / Central Mediterranean | |
| Chaetozone corona | Italy / Western Mediterranean | |
| Chaetozone corona | Italy / Adriatic Sea | |
| Desdemona ornata | Italy / Adriatic Sea | |
| Desdemona ornata | Italy / Western Mediterranean | |
| Diopatra hupferiana hupferiana | Italy / Central Mediterranean | |
| Dorvillea similis | Italy / Western Mediterranean | |
| Hesionura serrata | Italy / Adriatic Sea | |
| Hesionura serrata | Spain / Western Mediterranean | |
| Hydroides elegans | Italy / Western Mediterranean | |
| Lumbrinerides acutiformis | Italy / Central Mediterranean | |
| Lysidice collaris | Italy / Central Mediterranean | |
| Lysidice collaris | Italy / Western Mediterranean | |
| Naineris setosa | Italy / Central Mediterranean | |
| Nereis jacksoni | Italy / Adriatic Sea | |
| Nereis jacksoni | Italy / Western Mediterranean | |
| Notomastus aberans | Italy / Western Mediterranean | |
| Notomastus aberans | Italy / Adriatic Sea | |
| Novafabricia infratorquata | Italy / Adriatic Sea | |
| Novafabricia infratorquata | Italy / Central Mediterranean | |
| Novafabricia infratorquata | Italy / Western Mediterranean | |
| Pileolaria berkeleyana | Italy / Western Mediterranean | |
| Pileolaria berkeleyana | Italy / Central Mediterranean | |
| Pista unibranchia | Italy / Central Mediterranean | |
| Pista unibranchia | Italy / Western Mediterranean | |
| Polydora cornuta | Italy / Adriatic Sea | |
| Protodorvillea egena | Italy / Central Mediterranean | |
| Pseudopolydora paucibranchiata | Italy / Western Mediterranean | |
| Streblosoma pseudocomatus | Italy / Western Mediterranean | |
| Syllis hyllebergi | Italy / Adriatic Sea | |
| Syllis hyllebergi | Italy / Western Mediterranean | |
| Syllis pectinans | Italy / Adriatic Sea | |
