The nymph crawls above ground, where it unfolds its wings and becomes the winged form capable of spreading the phylloxera above ground.
Plants were kept until surviving nymphs had reached third or fourth instar or adulthood (10-15 days after treatment).
Leaf disks were removed from the ethanol and assessed individually under a dissecting microscope for numbers of eggs and nymphs.
The dance was also a poignant reminder of the difficulties that the young nymph would face on the path to immortality.
Twenty nymphs in the fourth arena were dissected each day for four days consecutively to assess the stages of the competition between the species.
Some of the attacked nymphs died and desiccated during the rearing process and thus could not be dissected for parasitism.
Ninety-seven females, 66 males, 21 nymphs and one larva were identified.
Approximately 12 weeks were spanned from the time that the first nymphs and then first adults were collected.
