see legend below
original author of picture: <a href="//commons.wikimedia.org/wiki/User:Siga" title="User:Siga">User:Siga</a>, included legend by <a href="//commons.wikimedia.org/w/index.php?title=User:Giancarlodessi&amp;action=edit&amp;redlink=1" class="new" title="User:Giancarlodessi (page does not exist)">Giancarlodessi</a>
2008-01
self-made (derived from <a href="//commons.wikimedia.org/wiki/File:Procerus_middle_leg.jpg" title="File:Procerus middle leg.jpg">Image:Procerus middle leg.jpg</a>)