Coconut Rhinoceros Beetle (Oryctes rhinoceros) Life Cycle Stages and Timing : 1. Egg Stage : (7-10 days) Female lays 50-100 eggs in decaying organic matter Eggs are oval, white, and 2-3 mm long 2. Larval Stage : (2-6 months) Larvae (grubs) hatch and feed on decaying organic matter Three instars, shedding skin between each instar Larvae grow up to 6 cm long and 1.5 cm wide 3. Pupal Stage : (2-4 weeks) Larvae transform into pupae, non-feeding and immobile Pupae are usually white, 3-4 cm long, and