The use of native plant species, Millettia ferruginea (Hochst) Baker known locally asrnbirbira, its deterrent/toxicity was assayed in relation to oviposition, ovicidal andrnfeeding (larval settlement) responses of PTM. M. ferruginea seed powder extractsrnobtained using solvents of varying polarities (water, acetic acid, acetone, chloroform,rntoluene and hexane) at eight serial diluents (w/v: 0.0, 0.2, 0.4, 0.6, 0.8, 1.0, 1.2 andrn1.4mg birbira seed powder/ml of water) were prepared. The PTM eggs for ovicidal andrnthe host plant parts: potato tubers for oviposition, larvae feeding and adult emergence,rnleaves for oviposition and neonate larvae settlement (settled, deterred and died)rnresponses were treated with seed powder extracts of birbira at each rate ofrnapplication. From the five replicates, observation were taken on the number of eggsrnlaid, active and terminated galleries, settled, deterred and died neonate larvae,rnemerged healthy and deformed adults and number of eggs hatched and unhatched.rnFinally, the mean number of eggs laid on treated and away treated substrates, activernand terminated galleries, mean number of successfully settled, rejected and diedrnneonate larvae and % of egg hatchability was analyzed. The LC50 values of birbirarnseed powder extracts for PTM eggs and neonates were also determined, too. Resultsrnrevealed that the number of eggs laid on tubers and leaves, the number of active andrnterminated galleries carved by PTM larvae, percentage of unhatched eggs, wererninversely proportional to the increase in rates of the extracts, whereas the number ofrneggs laid on cages and chambers inner surfaces increase with the increase in the raternof application of the extracts. Adult emergence did not show clear pattern as was therncase for most of the cases with the larvae and extracts has no impact in deformity ofrnadult except in acetic acid and chloroform. All birbira seed powder extracts applied onrnhost plant leaf inhibit settling of PTM neonate larvae and its lethal effect to neonatesrnincrease with increased rates of application and hours of exposure. The results in thisrnstudy confirmed that M. ferruginea is a potential natural insecticide of many insectrnpests.