<i><a href="//commons.wikimedia.org/wiki/Alouatta_pigra" title="Alouatta pigra">Alouatta pigra</a></i>. Photo taken in Belize. Note that the source page calls this a "Mexican black howler monkey" but <i>A. pigra</i> is the <a href="https://en.wikipedia.org/wiki/Guatemalan_Black_Howler" class="extiw" title="w:Guatemalan Black Howler">Guatemalan Black Howler</a>. The <a href="https://en.wikipedia.org/wiki/Mexican_Howler_Monkey" class="extiw" title="w:Mexican Howler Monkey">Mexican Howler Monkey</a> is <i>A. palliata mexicana</i>.
John J. Mosesso, NBII
2003-03
<a rel="nofollow" class="external free" href="http://images.nbii.gov/details.php?id=19580&amp;cat=Mammals">http://images.nbii.gov/details.php?id=19580&amp;cat=Mammals</a>