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 Olifantiella mascarenica Riaux-Gobin & Compère Figs 79, 80 Ref. illus.: Riaux-Gobin & Compère 2009 , figs 6–22; Riaux-Gobin 2015, figs 24, 25 Sample: GU52G-A Dimensions: Valve 9.3 µm long x 2.3 µm wide; striae 50 in 10 µm. Diagnostics: This species differs from O. pilosella Riaux-Gobin in the shape of the buciniportula, which here is a single trumpet. Comments: Olifantiella spp. are barely discernable in LM, and the details are at the limit even of the desktop SEM . These images were taken at U. Texas on a full-sized SEM .