Silkweed of box tree moth (Cydalima perspectalis), France. An invading lepidopteran native to Asia, consuming box leaves and whose incredible outbreak has caused the death of 99% of the Bugey and Sud Jura bauxeries. In summer, the caterpillars produce these immense silk threads at the end of which they form their cocoon and metamorphose into butterflies.
Jean-Philippe Delobelle / Biosphoto
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