Flatworms of Madog River

drawings by Brenna Lorenz
Drawing of the large-mouthed orange flatworm, possibly carrying an egg.  This is a portrait of one of our larger flatworms. The dark brown object is probably an egg. The large, round thing below the eyespots is the pharynx.

Sketch of the bumpy-skinned flatworm with the distinctive scowling appearance and hand-like tail, not to be confused with the annelid, Dero.  This little flatworm, with its bean-shaped eye-spots, huge mouth and bumpy skin, probably belongs to the same genus as the larger orange flatworm above.

Sketch of the common tan double worm.  This flatworm has no obvious eyespots. The "eyes" in the picture are colorless, and are probably some sort of sensory pits. Although it is less obvious with this individual than with others I have seen, this worm probably consists of two individuals that have not separated from each other after asexual division. Something seemed to be sticking out of its side on the left, as shown in the picture.
Sketch of a more clearly-defined double-worm. This individual is probably the same species as the one shown above, but in this case, the distinctiveness of the two segments was more pronounced. I could see two sets of sensory pits and two mouths. This is one of our smaller flatworms.

Sketch of the large, plain brown flatworm.  Here is the companionable flatworm, that never strayed far from the company of another of its species in the slide. It has no eyespots. The cilia on this one were particularly easy to see. Some of these get very large.

Sketch of a rhabdocoel, showing its eyespots, round body and long cilia.  This beautiful, shaggy, slow-moving flatworm is uncommon in our sample; we have only seen two of them. I think it's a rhabdocoel, meaning that it has a simple, undivided sack-like gut. It has attractive eye-spots.


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