1. Species Monalysidium aciculare (Batsch, 1791)
2. Species Monalysidium acicularis (Batsch, 1791) accepted as Monalysidium aciculare (Batsch, 1791) (unaccepted > incorrect grammatical agreement of specific epithet, Genus is neuter)

marine, brackish, fresh, terrestrial

neuter

(of ) Chapman, F. (1900). On some new and interesting Foraminifera from the Funafuti atoll, Ellice Islands. <em>Journal of the Linnean Society (Zoology).</em> 28 (179): 1-27., available online at https://www.biodiversitylibrary.org/page/31880329
page(s): p. 3 [details] 

Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2021). World Foraminifera Database. Monalysidium Chapman, 1900. Accessed through: Rius, M.; Ahyong, S.; Costello, M. J.; Galil, B. S.; Gollasch, S.; Hutchings, P.; Katsanevakis, S.; Lejeusne, C.; Marchini, A.; Occhipinti, A.; Pagad, S.; Poore, G. C. B; Robinson, T. B.; Sterrer, W.; Turon, X.; Willan, R. C.; Zhan, A. (2021) World Register of Introduced Marine Species (WRiMS) at: https://www.marinespecies.org/introduced/aphia.php?p=taxdetails&id=415652 on 2025-04-04

Costello, M. J.; Ahyong, S.; Bieler, R.; Boudouresque, C.; Desiderato, A.; Downey, R.; Galil, B. S.; Gollasch, S.; Hutchings, P.; Kamburska, L.; Katsanevakis, S.; Kupriyanova, E.; Lejeusne, C.; Ma, K. C. K.; Marchini, A.; Occhipinti, A.; Pagad, S.; Pino, L.; Poore, G. C. B.; Rewicz, T.; Rius, M.; Robinson, T. B.; Sobczyk, R.; Stępień, A.; Turon, X.; Valls Domedel, G.; Verleye, T.; Vieira, L. M.; Willan, R. C.; Zhan, A. (2025). World Register of Introduced Marine Species (WRiMS). Monalysidium Chapman, 1900. Accessed at: https://marinespecies.org/introduced%20/aphia.php?p=taxdetails&id=415652 on 2025-04-04

[taxonomic tree]