Saglam, N. and Shain, D.H. 2025. Correction of the specific epithet in Helobdella serendipitous Saglam et al. 2018 (Annelida: Hirudinea) as Helobdella serendipitosa, in accordance with Latin grammar. Zootaxa. 5647, 5 (Jun. 2025), 499–500. DOI:https://doi.org/10.11646/zootaxa.5647.5.9.