<ul><li>Hypolais pallida = <a href="//commons.wikimedia.org/wiki/Category:Iduna_pallida" title="Category:Iduna pallida">Category:Iduna pallida</a></li>
<li>Hypolais philomena = <a href="//commons.wikimedia.org/wiki/Category:Hippolais_icterina" title="Category:Hippolais icterina">category:Hippolais icterina</a></li>
<li>Hypolais polyglotta = <a href="//commons.wikimedia.org/wiki/Category:Hippolais_polyglotta" title="Category:Hippolais polyglotta">category:Hippolais polyglotta</a></li>
<li>Hypolais olivetorum = <a href="//commons.wikimedia.org/wiki/Category:Hippolais_olivetorum" title="Category:Hippolais olivetorum">category:Hippolais olivetorum</a></li></ul>
<bdi><a href="https://en.wikipedia.org/wiki/en:John_Gerrard_Keulemans" class="extiw" title="w:en:John Gerrard Keulemans"><span title="Dutch bird artist (1842-1912)">John Gerrard Keulemans</span></a>
</bdi>
NAUMANN, NATURGESCHICHTE DER VÖGEL MITTELEUROPAS: Band II, Tafel 4 - Gera, 1897  <a rel="nofollow" class="external free" href="http://www.biologie.uni-hamburg.de/b-online/birds/2181_32.htm">http://www.biologie.uni-hamburg.de/b-online/birds/2181_32.htm</a>