<< At a spring in South Oklahoma, I used to collect Dugesia dorotocephala, a
beautiful jet black planarian (once thought to be the largest in North
America). It occurred on all submersed surfaces including open patches of
gravel. Large numbers co-existed with orangethroat darters Etheostoma
spectabile and I never saw a fish go after one. I would use dorotocephala
as a comparison species for the planaria we used in Introductory Zoology
labs (D. tigrinum) to demonstrate differences in photonegativity.
/- >>
What would be the largest flat worm in North America? Does anyone know?
Moon
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