<i>Cethosia luzonica</i> or the “Luzon lacewing butterfly” and <i>Pachliopta aristolochiae</i> or the “common rose butterfly”
Philippine Postal Corporation
<a rel="nofollow" class="external autonumber" href="https://colnect.com/en/stamps/stamp/864753-50th_Anniversary_of_Relations_Philippines_Singapore-Philippines-Singapore_Joint_Issue_2019_-_Butterflies-Philippines">[1]</a> <a rel="nofollow" class="external autonumber" href="https://pia.gov.ph/news/articles/1022251">[2]</a>