Entomology definition of Facial tubercle September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Facial tubercle Entomology definition of Facial tubercle: Diptera; a median convexity below middle of face. Entomology Facial tubercle definitionFacial tubercle Entomology explanationFacial tubercle Entomology meaningReviews & Comments