Adult of T. confusum were laboratory reared on wheat flour at
27.5 ± 1.5 ◦C and 70% ± 5% (R.H.) according to the method of Frederic et al. [23] with some modifications. adult was topically treated with 10 m of each
compound according to the protocol described by Delobel et al.
[24] as follows: thirty insects divided on three replicates (10
adult/replicate) were topically and mortality was then monitored
after 24 h. Thirty adults of control experiment were used in three
replicates without treatment. The adult mortality was estimated
according to Abbot Method [25]. Estimation of LD50 values was
made using probity analysis as given by Finney [26].