Studies were carried out to assess biological attributes of arrhenotokous (sexual) and thelytokous (asexual) forms of Trichogramma pretiosum Riley under the laboratory conditions. Selected arrhenotokous and thelytokous T. pretiosum was used in studies of finding the per cent parasitism, per cent desiccation, sex ratio, per cent emergence and per cent male and female emergence on the five selected different sized containers under constant and variable number of host parasitoids release. The mean percent parasitization in arrhenotokous species varied from 24.2 - 47.8% from all five different sized containers under both constant and variable no of releases as compare to 45.3 - 62.2 % in the lytokous species. The mean number of days to adult emergence ranged from 10.05 to 10.3 under both constant and variable number of parasitoid release in both the species of Trichogramma pretiosum. In both forms of T. pretiosum the per cent desiccated eggs increased as the size of three containers increased.