Response Of Latheticus oryzae (Coleoptera: Tenebrionidae) To Three Pyrethroid Insecticides

Laboratory experiments were carried out to evaluate the response of 4 and 6 larval instars and 1week old adults Latheticus oryzae by exposure for 24, 48, and 72 hour to wheat treated with different concentrations of the three pyrethroids: ALPHACHEM® (5 EC), TRUST® (25 WP) and DECIS® (20 EC). Based on the Lc50 values of the three insecticides the result showed that 4 instar larvae were much susceptible to the insecticides than the 6 instar larvae and adults. The toxicities of insecticides increased (the values of Lc50 decreased ) as the exposure period increased from 24 to 72 hour. Also th study showed that, ALPHACEM and DECIS were more effective than TRUST. Response Of Latheticus oryzae (Coleoptera: Tenebrionidae) Response Of Latheticus oryzae (Coleoptera: Tenebrionidae) ...