Species ID
OC-SP-0002644
Discovered
Phylum
Platyhelminthes
Species ID
OC-SP-0002644
Provisional Species Name
Promesostoma sp_S_1843
Lowest Valid Taxon Name in WoRMS
Promesostoma
Lowest Known Rank
Genus
Status
Discovered
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Embargo
No
Kingdom
Animalia
Phylum
Platyhelminthes
Order
Rhabdocoela
Family
Promesostomidae
Genus
Promesostoma
Taxonomic Remarks
The general morphology of Promesostoma sp.2 highly resembles that of P. bilobatum, a species described from the North Wester Atlantic (Canada). However, the stylet of Promesostoma sp.2 (155 µm) is much shorter than that of P. bilobatum (210 µm). The distal part of the stylet of Promesostoma sp.2 is distinctly broad, spoon shaped, whereas it shows one wing-shaped structure on each side in P. bilobatum.
Received All Minimal Data for Discovery
01/04/2026
Description of Material
Species of Promesostoma with eyes. Male copulatory bursa present. Almost straight stylet situated beside the pharynx, 151–159 µm long (x¯ = 155 µm; n = 3), with the proximal funnel bent ~90°. Tubular part 9–10 µm wide; distal aperture expanded, 24–27 µm wide (x¯ = 26 µm; n = 3). The prostate and the single seminal vesicles are oriented backwards; prostate vesicle situated beside the pharynx and the seminal one latero-posteriorly. Distally, the male atrium contains a bundle of glands. Common genital atrium very broad and muscular.
Ecology
Fine-grained, silty sand, 0.5 m deep, salinity 35 ‰.
Distribution
United States of America, Florida, Fort Pierce, Old Ford Park, 27.437535; -80.319533.
Scientific Name Authorship
Diez, Yander L.
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