Species ID
OC-SP-0002630
Discovered
Phylum
Platyhelminthes
Species ID
OC-SP-0002630
Provisional Species Name
Gyratrix sp_IRLBB_00916
Lowest Valid Taxon Name in WoRMS
Gyratrix
Lowest Known Rank
Genus
Status
Discovered
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Embargo
No
Kingdom
Animalia
Phylum
Platyhelminthes
Order
Rhabdocoela
Family
Polycystididae
Genus
Gyratrix
Taxonomic Remarks
Gyratrix sp.2, like the previously described species, lacks eyes. However, it differs in the morphology of the prostate stylet type III, which exhibits a well-developed proximal portion that constitutes most of its length. This combination of characters also distinguishes Gyratrix sp.2 from the nominal species G. hermaphroditus. In addition, the position of the testis in Gyratrix sp.2, located anterior to the pharynx, further differentiates it from Gyratrix sp.1, in which the testis is situated posterior to the pharynx.
Received All Minimal Data for Discovery
01/04/2026
Description of Material
Species of Gyratrix without eyes. Single testis anterior to the pharynx. Prostate stylet type II needle shaped but robust, 167–179 µm long (x¯ = 173 µm; n = 2), showing a proximal funnel and tapering to a distal sharp tip. Prostate stylet type III is 93–99 µm long (x¯ = 96 µm; n = 2); its proximal part is 71–77 µm long (x¯ = 74 µm; n = 2); distal end without spine.
Ecology
Medium-coarse and well-sorted sand, intertidal, salinity 35 ‰.
Distribution
United States of America, Florida, Sebastian, Spoil Island, 27.815210; -80.457830. United States of America, Florida, Wabasso, Wabasso Island, 27.756471; -80.422658.
Scientific Name Authorship
Diez, Yander L.
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