Pine tree caterpillar

	Symptomes : 1. The Pine Processionary butterflies come out of earth. The coupling between male and female take place. The male dies one or two days later. 2. The female take off and will lay between 70 and 300 eggs on a branch of Pine. Thereafter the female dies. 3. The caterpillars emerge 30 to 45 days after laying. They feed themselves with he Pine’s needles, and maintain connected by a silk wire. 4. During their development, the caterpillars change their colour and get more and more hairs (up to 1 million). Those by getting loose with the wind can cause health problems to mankind and animals. 5. The caterpillars build a silk shelter in autumn on a branch of Pine where they will spend the winter. They leave the nest during the night to maintain it and to feed themselves. 6. In spring, the colony guided by a female leaves the shelter and moves towards an enlightened zone. It’s called the procession of nymphose : all caterpillars are connected and move in a queue. A queue can count some hundred of caterpillars. After a few days, they stop in a sunny place. Then all of them hide in a hole of 10 to 20 cm deep. 7. Two weeks later, the Processionaries have spinned their individual cocoons and are transformed in chrysalides. They will maintain at this stage during several months (sometimes several years depending of the areas). 8. After several months, each chrysalide will be metamorphosed in butterfly, always underground. Then, during a summer evening, the butterflies come out of earth
	Description : The Pine Processionary Moth (Thaumetopoea pityocampa) attacks pine and cedar forests in all mediterranean countries. The pest was famously studied by a French naturalist by the name of Jean Henri Fabre who became quite intrigued by a species of caterpillar called the "Processionary Caterpillar" which fed on pine needles and moved through the trees in a long procession
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