Narcissus bulb flies usually emerge from the soil in May. After mating, females lay one to three eggs between the sheath and stem of the bulb or between the layers of skin enclosing the neck of a bulb. Females lay up to 100 eggs each.
Narcissus bulb flies usually emerge from the soil in May. After mating, females lay one to three eggs between the sheath and stem of the bulb or between the layers of skin enclosing the neck of a bulb. Females lay up to 100 eggs each.