What is unique about the clustering behavior of Great White caterpillars?
Answer
They are noted to be found in clusters until near maturity.
When comparing the larval stages, a distinct behavioral difference exists between the Small White and the Great White caterpillars. The larvae of P. rapae are typically found singly as they develop. In contrast, the Great White caterpillar is specifically noted for its gregarious nature during this phase; they tend to be found clustered together, often in groups, until they are very close to reaching their final maturity stage before pupation. This difference in aggregation behavior can be a significant indicator when observing caterpillars in the field.

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