Hermit crabs (Crustacea: Decapoda: Anomura: Paguroidea) of the Northern Marianas, including new records and an updated checklist Author Celia, Maria Marine Biodiversity and Evolution Lab, Division of Biological Miag-ao, Iloilo, Philippines Orcid ID: https: // orcid. org / 0000 - 0003 mdmalay @ up. edu. mdmalay@up.edu Author Malay, D. of Biological Sciences, University of the Philippines Visayas, Iloilo, Philippines .. org / 0000 - 0003 - 0219 - 4788 mdmalay @ up. edu. ph mdmalay@up.edu.ph Author Miller, Allison K. Anatomy Department, University of Otago, Dunedin, Otago, New Zealand. Orcid ID: https: // orcid. org / 0000 - 0002 - 5334 - 2771 Author Komai, Tomoyuki Natural History Museum and Institute, Chiba, 955 - 2 Aoba-cho, Chuo-ku, Chiba, 260 - 8682 Japan. Orcid ID: https: // orcid. org / 0000 - 0003 - 0892 - 2555 text Micronesica 2021 2021-12-20 2021 1 1 29 journal article 299030 10.5281/zenodo.12118323 eaabd3c9-32aa-4916-8eda-25302e59d1f3 0026-279X 12118323 Pagurixus sp. 1 ( P. anceps species group) Material . 1 female (SIO-BIC C14514), Guguan Island , station AKM-GUG-02 . Remarks . The sole female specimen is referred to a species of the Pagurixus anceps ( Forest 1957 ) group, but still differs from known species of the group in the mesial margin of the right cheliped dactylus bordered with a distinct, denticulated ridge. The lack of dorsomesial spines on the right cheliped carpus (except for a tubercle at dorsomesial distal angle) and the possession of paired gonopores are also characteristic. It is likely that the present specimen represents an undescribed species, but we feel hesitation to formally describe a new species based only on a single, incomplete female specimen. Formal description of a new species is deferred in the hope that additional specimens become available for study.