Entomology definition of Nigricans September 11, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Nigricans Entomology definition of Nigricans: black, tinged with gray. Entomology Nigricans definitionNigricans Entomology explanationNigricans Entomology meaningReviews & Comments