Abstract
The eggshell ultrastructure of the exophytic riverine dragonfly Onychogomphus forcipatus unguiculatus (Odonata: Gomphidae) is presented using transmission electron microscopy. A homogeneous vitelline envelope is surrounded by a thick, many-layered endochorion and a relatively thick, homogeneous exochorion. The micropylar projection is covered by a jelly-layer. The structure of the shell is intermediate between known endophytic and exophytic eggshells in the order. A possible evolution of jelly-covered exophytic eggs from endophytic riverine ancestors is discussed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International Journal of Insect Morphology and Embryology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
