Marine benthic diatoms of Guam: new records, Dictyoneis apapae sp. nov., and updates to the checklist Author Lobban, Christopher S. Division of Natural Sciences, University of Guam, Mangilao, GU 96923, USA clobban @ triton. uog. edu clobban@triton.uog.edu Author Witkowski, Andrzej University of Szczecin, Institute of Marine and Environmental Sciences Mickiewicza 16 a, PL 70 - 383 Szczecin, Poland text Micronesica 2023 2024-06-06 2023 2 1 75 journal article 299061 10.5281/zenodo.12118784 2b921c3c-8618-439e-96da-1de9c66a90f9 0026-279X 12118784 Schizostauron cf. trachyderma (F.Meister) Górecka & Riaux-Gobin Our species identified as Achnanthes citronella is a species of Schizostauron but we can so far only propose it as Schizostauron cf. trachyderma (F.Meister) Górecka & Riaux-Gobin. The difficulties in deciding whether it is that species, S. kajotkei Dabek, Górecka & Witkowski , or neither was discussed with reference to Chuuk specimens by J.S.Park et al. (2022), and the SEM images we have to date for this species do not resolve the question. See Riaux-Gobin et al. (2015), Davidovich et al. (2017) and Górecka et al. (2021).