Marengo - Cape - and Hayley Pt;31 - Nemertea;BQDAC0050;MRG872-14;Tetrastemma sp. SMSA029;SMSA029;SP03408;AN019575;NMVF290248;PID0165584
Species ID
OC-SP-0002970
Discovered
Phylum
Nemertea
Species ID
OC-SP-0002970
Provisional Species Name
Tetrastemma sp_SMSA029
Lowest Valid Taxon Name in WoRMS
Tetrastemma
Lowest Known Rank
Genus
Status
Discovered
Does the taxonomist(s) intend to work on this material further?
3. I/We are not sure yet. This is of course no problem, we will display your species info (if not embargoed) while you work out your species description plan.
Embargo
No
Kingdom
Animalia
Phylum
Nemertea
Class
Hoplonemertea
Order
Monostilifera
Family
Tetrastemmatidae
Genus
Tetrastemma
Date Identified
23/01/2026
Taxonomic Remarks
There are several cryptic nearly colorless species of Tetrastemma in southeast Australia which are difficult to separate. Tetrastemma sp. SMSA029 is easily recognized by its relatively long stylet compared to basis, a narrow pear-shaped basis, and by the COI sequence data.
Received All Minimal Data for Discovery
08/04/2026
Description of Material
Body 20 mm long, 0.6 mm wide, uniformly white, semi-translucent. Cephalic lobe slightly wider than neck, diamond shaped, 1.6 times longer than wide, separated from body by an indistinct neck furrow. Oblique cerebral organ furrows visible dorsally and ventrally. Two pairs of ocelli. Posterior tip bluntly pointed. Rhynchocoel extends to near posterior tip. Stylet basis an elongate pear shape, slightly wider at its distal rounded tip. S/B = 1.4. Two accessory stylet sacs with 4 or 5 stylets in each.
Ecology
Found on coralline algae growing around Caulerpa seaweeds in the intertidal zone.
Distribution
Marengo, Victoria, Australia.
Scientific Name Authorship
Maslakova, Svetlana
Marengo - Cape - and Hayley Pt;31 - Nemertea;BQDAC0050;MRG872-14;Tetrastemma sp. SMSA029;SMSA029;SP03408;AN019575;NMVF290248;PID0165584
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