The life history parameters of mealybug, Drosicha sp, fed on willow (Salix wilhelmsiana) and apricot (Prunus armeniaca L.) hosts were studied under laboratory conditions at 25 ± 2 °C temperature and 60-65 relative humidity in the Integrated Pest Management Laboratory of Agriculture Directorate Skardu during 2019-2020. The data regarding the life table parametrs viz  the mean generation time (T), finite rate of increase (λ), the intrinsic rate of increase (r) and net reproductive rate (Ro) of Drosicha sp reared on willow and apricot hosts were (60.96 ± 0.357, 62.45 ± 0.422) days, (1.085 ± 0.002, 1.079 ± 0.002) days, (0.081 ± 0.001, 0.076 ± 0.002) days, (147.66 ± 15.97, 120.9 ± 14.47) eggs/female respectively. The results further revealed that significant differences were observed in the developmental times, adult longevity and fecundity of Drosicha sp when reared on willow and apricot hosts. Male longevity was recorded longer on willow (64.46 ± 0.924 days) as compared to apricot (63.5 ± 1.27 days). Similarly, female longevity observed shorter on willow (67.80 ± 0.42) as compared to apricot (69.78 ± 0.48 days). Drosicha sp reared on apricot resulted in significantly decreased oviposition days (5.060 ± 0.113) and fecundity (219.81 ± 5.487 eggs) as compared to Drosicha sp reared on willow. These results revealed that the invasive mealybug, Drosicha sp can be considered as serious threats to willow, apricot and other ornamental plants in forests and fruits orchards. Therefore, understanding of the demographic study Drosicha sp is important for the success of its management program.

Key Words: Apricot, Demographic, Mealybug, Willow, life table