The genus was introduced by the Australian ornithologist Gregory Mathews in 1912 with the pale-yellow robin (Tregellasia capito) as the type species.[2] The genus name was chosen to honour the Australian field ornithologist Thomas Henry Tregellas (1864-1938).[3]
^Jobling, J.A. (2019). del Hoyo, J.; Elliott, A.; Sargatal, J.; Christie, D.A.; de Juana, E. (eds.). "Tregellasia". Handbook of the Birds of the World Alive: Key to Scientific Names in Ornithology. Lynx Edicions. Retrieved 17 June 2019.