The current study focused on how lac insect Kerria maduraiensis grown on four different host plants: Flemingia semialata, Flemingia macrophylla, Butea monosperma, and Amherstia nobilis. Each host plant received five replicas of the broodlac insect (5 gram each). Lac insect productivity-related metrics such as first density of settlement, early death, male percentage, and mass at crop development were calculated for each group and compared. The performance of K. maduraiensis was better on B. monosperma compared to other hosts. At crop maturity, B. monosperma had the uppermost mean number of female lac insects (8.40±1.14) and the highest mean number of female cell density. On the host plant, B. monosperma, the mean number of mortalities was (5.84±4.63), which was found to be low. Also, the mean number of male cells was calculated and found to be significantly lower in the B. monosperma plant than in the other groups. According to the results of the current study, B. monosperma is observed to be a good host plant of K. maduraiensis and thus identified that B. monosperma trees can be used as a host plant tree for the lac insect cultivation in the state of Kerala. The study also identified Hyblaea puera Cramer (Teak defoliator) as a new pest sucking insect on Flemingia species (F. semialata and F. macrophylla).