The nymphs undergo a series of molts before they reach their adulthood after 6 to 8 weeks (FAO, 2014). The number of molts in normal development has been reported variously from 6 to 12.
Patton (1978) reports that the amount of instars were 10, after photographing the nymphs for 45 days. Whereas Clifford (1990) report that the amount of instars are 8 – 9, and Nix and Bass (1973)concluded that there are 6 instars.