This Review paper is an effort to study the relative variations in respect of rearing and reeling performances of three mutant strains viz; Daba–blue, Daba–yellow and Daba–almond of tasar silk worm, A. mylitta D. This paper will also discuss the impacts of zonal differences on the productivity and qualities of tasar cocoons of mutant strains of Antheraea mylitta D. The three mutant strains of Tasar Silk Worm differ among themselves in respect of their rearing and reeling performances. The performances of Daba–blue in respect of rearing and reeling performances as well as productivity and qualities of tasar cocoons have been found evidently better than the Daba–yellow and Daba–almond. This is due to genetic variability among the three mutant strains of A. mylitta D. on account of relative differences in their physio–genetic makeup The relative rearing performances of all the three mutant strains of Antheraea mylitta along with its control are by and large better during the commercial crop season than the seed crop season which reveals the significant impacts of seasonal differences on the rearing performances of mutant strains along with its control. Further, the productivity and quality of tasar cocoons of Jharkhand and Madhya Pradesh zones are relatively better and superior to Orissa, West Bengal and Bihar Zones of tasar producing states. This suggests that the zonal differences influence the relative performances of mutant strains of Antheraea mylitta D in respect of productivity and quality of tasar cocoons.