Gall Fly Emergence Cage Set Up and Larvae Pictures
Students randomly select 100 seed heads and place them in insect cage. If, for instance, the class average is 5.25 galls/seed head than, we will expect 525 gall flies to emerge from these 100 seed heads.
Above: The larvae are small but quite observable. 7th graders squish quite a few but enjoy the challenge of removing them from their galls to observe them.
Below: 4 larvae. Note the dark heads on two of them.
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