Willowsia nigromaculata - Springtail (<a href="https://en.wikipedia.org/wiki/Willowsia_nigromaculata" class="extiw" title="w:Willowsia nigromaculata"><i>Willowsia nigromaculata</i></a>) in a bathroom in <a href="https://en.wikipedia.org/wiki/Portage,_Michigan" class="extiw" title="w:Portage, Michigan">Portage</a>, <a href="https://en.wikipedia.org/wiki/Michigan" class="extiw" title="w:Michigan">MI</a>. © Cody Hough - CC BY-SA 3.0 - Wikimedia Commons