Thomas's langur (<i>Presbytis thomasi</i>) at Bukit Lawang, Langkat, North Sumatra
<a href="//www.flickr.com/people/49222642@N03" class="extiw" title="flickruser:49222642@N03">Madeleine Holland</a>
CC BY 2.0
<a href="//commons.wikimedia.org/wiki/Flickr" class="mw-redirect" title="Flickr">Flickr</a>: <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/49222642@N03/8605481905">One of the adult Thomas Leaf Monkeys</a>