Anglesea - Point Roadknight;31 - Nemertea;BQDAC0020;MRG931-05;Tetrastemma sp. SMSA013;SMSA013;SP02566;AN022379;NMVF290396;PID0247643
Species ID
OC-SP-0002962
Discovered
Phylum
Nemertea
Species ID
OC-SP-0002962
Provisional Species Name
Tetrastemma sp_SMSA013
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
20/01/2026
Taxonomic Remarks
There are several cryptic nearly colorless species of Tetrastemma in southeast Australia which are difficult to differentiate morphologically. Tetrastemma sp. SMSA013 can be distinguished from similar local species (e.g. Tetrastemma sp. SMSA017) by having colorless rather than pink cerebral ganglia, and from others by body color and the skirt-shaped stylet basis with a relatively short stylet, as well as by COI sequence data.
Received All Minimal Data for Discovery
08/04/2026
Description of Material
Body 12 – 14 mm long, 0.9 mm wide, cream colored, semitranslucent, without patterning. Cephalic lobe slightly wider than neck, diamond shaped, one third longer than it is wide, separated from body by conspicuous neck furrow. Prominent oblique cerebral organ furrows visible dorsally and ventrally. Two pairs of ocelli. Posterior tip rounded or bluntly pointed. Rhynchocoel extends to near posterior tip. Stylet basis skirt shaped, widest at its distal truncated end. S/B = 0.4. Two accessory stylet sacs with 2 – 3 stylets in each.
Ecology
Found in various seaweeds on rocky reefs in the intertidal zone.
Distribution
Point Roadknight, Victoria, Australia
Scientific Name Authorship
Maslakova, Svetlana
Anglesea - Point Roadknight;31 - Nemertea;BQDAC0020;MRG931-05;Tetrastemma sp. SMSA013;SMSA013;SP02566;AN022379;NMVF290396;PID0247643
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