Entomology definition of Subcostal fold or furrow September 13, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Subcostal fold or furrow Entomology definition of Subcostal fold or furrow: lies between costa and radius. Entomology Subcostal fold or furrow definitionSubcostal fold or furrow Entomology explanationSubcostal fold or furrow Entomology meaningReviews & Comments