Entomology definition of Post-gena September 12, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Post-gena Entomology definition of Post-gena: the sclerite below occiput and behind gena in some Orthoptera. Entomology Post-gena definitionPost-gena Entomology explanationPost-gena Entomology meaningReviews & Comments