VICARIANT

[vi.car.i.ant] adj [trans. of G vikarirend, prp. of vikarieren to act as a substitute, fr. Vikar representative, proxy, fr. MHG vicar, fr. L vicarius substitute] (1952): of, relating to, or being the process of vicariance or organisms that evolved through this process "the possible ~ origin of the Antillean arthropod fauna" -- vicariant n