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Pine
Processionary Caterpillar

Do not touch,
keep clear!
These
caterpillars to move over the ground in long head-to-tail processions
and sting with urticating hairs anyone who attempts to molest them.
It is also one of the most destructive of forest insects, capable
of defoliating vast tracts of pines during its episodic population
surges.
The
insect is active only during the colder times of the year, spending
the warm summer months as a pupa buried in the ground. The moths
begin to emerge from the soil in August and shortly thereafter mate
and seek out pine trees where they place their eggs. Each female
produces a single egg mass which it fastens to a needle of a suitable
host trees. Egg masses contain up to 300 or so eggs and the caterpillars
typically eclose from them four or more weeks after they are laid.
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