''Tetrastemma'' is a genus of
nemerteans
Nemertea is a phylum of animals also known as ribbon worms or proboscis worms, consisting of about 1300 known species. Most ribbon worms are very slim, usually only a few millimeters wide, although a few have relatively short but wide bodies. ...
belonging to the family
Tetrastemmatidae
Tetrastemmatidae is a family of worms belonging to the order Monostilifera
Monostilifera is a suborder of nemertean worms belonging to the class Hoplonemertea (formerly Enopla
Enopla is one of the classes of the worm phylum Nemertea, cha ...
.
The genus has
cosmopolitan distribution
In biogeography, a cosmopolitan distribution is the range of a taxon that extends across most or all of the surface of the Earth, in appropriate habitats; most cosmopolitan species are known to be highly adaptable to a range of climatic and en ...
.
Species
Species:
*''
Tetrastemma aberrans''
*''
Tetrastemma albolineatum''
*''
Tetrastemma albomaculatum''
References
Tetrastemmatidae
Nemertea genera
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