Entomology definition of Haustellate September 9, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Haustellate Entomology definition of Haustellate: formed for sucking: applied chiefly to mouth structures. Entomology Haustellate definitionHaustellate Entomology explanationHaustellate Entomology meaningReviews & Comments