Example of male adaptations associated with sphragis production: a parasagittal section of Euryades corethrus male showing deep pockets where sphragis wings are molded and other features associated with sphragis production b The finished sphragis in situ on the female abdomen.

 
 
  Part of: Carvalho APS, Orr AG, Kawahara AY (2017) A review of the occurrence and diversity of the sphragis in butterflies (Lepidoptera, Papilionoidea). ZooKeys 694: 41-70. https://doi.org/10.3897/zookeys.694.13097