Annals of Plant Protection Sciences

Duration of development, longevity and life table statistics of Anaphothrips sudanensis was studied on Phragmites karka under the rearing conditions of 18 ± 2°C and 26 ± 1.5°C; 72 ± 5% RH. The fecundity based on larval emergence was 37 ± 6.7 eggs. Egg incubation period, growth duration of larva I and II were 9.5 ± 1.57, 1.5 ± 0.44 and 3 ± 0.8 days, respectively. Duration of prepupa, pupa and adult longevity was 1 ± 0.28, 2 ± 0.44 and 8 to11 days, respectively. Net reproductive rate (Ro) of A. sudanensis was 33.25 eggs. True generation time (T), population doubling time and rate of weekly multiplication of the population (λ⁷) were 21.36, 4.22 days and 3.15 times, respectively, along with the intrinsic rate of increase in number (r_m) being 0.1640. Periodical sampling of A.sudanensis revealed that its population ranged from 10 to 35 individuals/10 sweeps/m² i.e., minimum during rainy and winter seasons and maximum in spring and autumn. This species occurs in three different forms such as macropterous and brachypterous females and apterous males.