Terrestrial Flatworms, an invasive species to the United States, have been shown to secrete which toxin to subdue their prey?
Tetrodotoxin
Stokes, Amber N et al. “Confirmation and distribution of tetrodotoxin for the first time in terrestrial invertebrates: two terrestrial flatworm species (Bipalium adventitium and Bipalium kewense).” PloS one vol. 9,6 e100718. 25 Jun. 2014, doi:10.1371/journal.pone.0100718
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