water louse


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water louse

n
(Animals) an aquatic isopod of the genus Asellus, common in weedy water. Also called: water slater
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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Two kinds of bdelloid were even found living on the body of one animal - a water louse - yet the one living on the louse's legs had evolved separately to the one which lives on the louse's chest.