| Name | Protothelenella sphinctrinoidella (Nylander) H. Mayrhofer & Poelt |
| Authorship | (Nylander) H. Mayrhofer & Poelt |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Protothelenella Räsänen |
| Citation | 1985 Herzogia 7(1-2): 47 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Protothelenella sphinctrinoidella (Nylander) H. Mayrhofer & Poelt |
| Identification made in | [no date] (1) |