Technical Abstract: Development, survival and reproduction of the papaya mealybug (Paracoccus marginatus Williams and Granara de Willink) on three ornamental plants (Hibiscus rosa-sinensis L., Acalypha sp. and Plumeria sp.) and one weed species (Parthenium hysterophorus L.) were investigated. Papaya mealybug was able to complete its life cycle on all four plants. The mean developmental time from egg to adult male and female was 28-30 d, and 24-26 d respectively with 83 ± 0.3% of the eggs hatched and first instars emerged. Survival of first and second-instar nymphs and the cumulative adult survival were lower on plumeria. Longevity of adult male and female were 2.31 ± 0.02 and 21.15 ± 0.06 d respectively. Overall, 53-59% of the adult population was female. No egg production occurred in virgin females. Pre-reproductive and reproductive period of the females were 6.29 ± 0.02 and 11.16 ± 0.02 d, respectively. Mean fecundity by female ranged from '186-244 and was lower on plumeria than on the other three plant species. The ability of papaya mealybug to develop, survive and reproduce on acalypha, plumeria and parthenium, helps it to survive and maintain its population in the absence of favorite hosts such as papaya and hibiscus.