Aythya americana shine sunan kimiyya ga nau'in agwagwa mai nutsewa wanda akafi sani da ja. Kalmar "Aythya" ta fito ne daga kalmar Helenanci "aithuia," wanda ke nufin wani nau'in tsuntsu na teku, yayin da "americana" yana nufin kewayon yanki a Arewacin Amirka. Saboda haka, ma'anar ƙamus na Aythya americana shine kawai "wani nau'in agwagwa da ake samu a Arewacin Amirka, wanda aka fi sani da ja."