blue-gray taildropper

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Prophysaon coeruleum, (the blue-grey taildropper), is a species of slug belonging to the genus Prophysaon, a genus known for the autotomy of its tail. It is native to western North America, from southwestern British Columbia to northwestern California, with a more isolated population in Idaho. There are conservation efforts in place to protect the blue-grey taildropper, and it is on multiple lists of species at risk.

Prophysaon es un género de babosas terrestres que respiran aire. Son moluscos gasterópodos pulmonados terrestres de la familia Arionidae. Estas babosas pueden autoamputar (autotomía) una porción de su cola como forma de protección ante un ataque al permitirle huir.