A strain from Tifton (T) GA was resistant to fenvalerate, methyl parathion and permethrin, but susceptible to methomyl in generation one. In generation two the T strain was resistant to fenvalerate, but it was susceptible to methyl parathion, permethrin and methomyl. Results are indicative of a reversion to susceptibility. In generation two reciprocal crosses were made with the T strain and the DOW-Zeneca reference (S) strain. S was susceptible to all four insecticides. LD_´s of all four insecticides for S x T and T were equal. LD_´s of fenvalerate and methomyl for S x T were significantly greater than those for T x S. Linkage for the male of the T strain is shown.