none Bracon hebetor; REPRODUCTIVE-PRODUCTIVITY; LEPIDOPTERAN-HOSTS; Galleria mellonella; Superparasitism effects on progeny production & sex ratio; POPULATION-SEX-RATIO; Progeny, superparasitism effects Bracon hebetor (Say) is a gregarious larval ectoparasitoid which was reared under laboratory conditions of 26 +- 2 degree C and 55-60% RH on the Greater Wax Moth, Galleria mellonella L., larvae. Three different groups of experiments were done to determine the effects of superparasitism on fecundity and sex-ratio of the parasitoid. In the first group, each host was exposed to only one female parasitoid. In the second and third groups, however, each host was exposed to five or ten females, respectively. Average adult numbers obtained per host were 16.5, 28.3 and 21.2 in the first, second and third groups, respectively. Superparasitism increased the mean number of parasitoid adults reared per attached larvae of the host, but it decreased the average progeny production of the female parasitoid. Superparasitism also reduced the percentage of females in the total progeny in favor of males.