Entomology definition of Tylus September 14, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Tylus Entomology definition of Tylus: the anterior central lobe of the head in Hemiptera. Entomology Tylus definitionTylus Entomology explanationTylus Entomology meaningReviews & Comments