Coypu described by Juan Ignacio Molina in 1782 as "Mus coypus", a member of the mouse genus. The genus "Myocastor" was assigned in 1792 by Robert Kerr. Geoffroy Saint-Hilaire, independently of Kerr, named the species "Myopotamus coypus", and it is occasionally referred to by this name. Four subspecies are generally recognized: "M. c. bonariensis", the subspecies present in the northernmost (subtropical) part of the coypu's range, is believed to be the type of coypu most commonly introduced to other continents. Comparison of DNA and protein sequences showed that the genus "Myocastor" is the sister group to the genus "Callistomys" (painted tree-rats).
Louie (given name) Louie (given name) Louie is a moderately common given name, related to the more common name Louis. It originated in the United Kingdom (where "Louis" is pronounced ) as a more regularly-spelled version without a silent ⟨s⟩. In 2011, it was the 74th most common forename for births in England and Wales, with Louis only slightly more common at 68th. In the United States, "Louis" (there pronounced ) is far more common. The name is unisex; it is usually considered a masculine given name, as a derivation of Louis, but is occasionally given to girls as a diminutive of Louise.