Kaburakia excelsa Bock, 1925
Common name(s) Giant flatworm, Giant leaf worm
|Kaburakia excelsa, about 9 cm long. Found under a rock on Sares Head, Rosario Bay|
|(Photo by: Dave Cowles, June 2003|
How to Distinguish from Similar Species: This species if far larger than any other species in this area, and is one of the largest in the world. Most other flatworms in this area are up to only about 3 cm long. Polyclads are the only group of flatworms in our area that get larger than microscopic size.
Geographical Range: Sitka, Alaska to Newport Harbor, CA
Depth Range: Mid-intertidal to subtidal.
Habitat: Among mussels and under rocks, sometimes on pilings or on boat bottoms among fouling organisms.
Biology/Natural History: The tentacles are just in front of the brain and can be retracted. This animal is negatively phototactic. The margins of the body wrinkle as the animal moves (see photo above). Will eat mussel tissue in the laboratory. In Washington, gravid individuals can be found in March. 150-160 golden yellow eggs are laid individually in capsules, in a tight-packed monolayer or bilayer on rocks.
|Main Page||Alphabetic Index||Systematic Index||Glossary|
O'Clair and O'Clair, 1998
Morris et al., 1980