Abstract: The hatching, larval, protonymphal, deutonymphal and reproductive periods, fecundity and longevity of Tetranychus cinnabarinus infesting Solanum melongena were studied in different seasons under laboratory condition. Except fecundity the highest values of these parameters were obtained during winter. Negative impact of temperature was observed on hatching, larval, protonymphal, deutonymphal and reproductive period whereas temperature affected directly the fecundity of T. cinnabarinus. Relative humidity was found to have no significant effect on development stages well as any aspect.