Eliurus petteri
... that the Malagasy rodent Eliurus petteri is the only tufted-tailed rat with completely white underparts?
... that the <a href="./Fauna_of_Madagascar" id="mwBoM" rel="mw:WikiLink" title="Fauna of Madagascar">Malagasy</a> rodent <i id="mwBoQ"><b id="mwBoU"><a class="mw-redirect" href="./Eliurus_petteri" id="mwBoY" rel="mw:WikiLink" title="Eliurus petteri">Eliurus petteri</a></b></i> is the only <a href="./Eliurus" id="mwBoc" rel="mw:WikiLink" title="Eliurus">tufted-tailed rat</a> with completely white underparts?