invasion of caterpillars of the unpaired silkworm

animal armyworm blue brown butterfly caterpillar caterpillars countries creepy crop dangerous dispar eat entomology fauna forest garden gingerbread gipsy gipsymoth gypsy hair hairy herbivorous insect insecta insecticideresistant invasion jersey larva larvae lepidoptera lymantria lymantriidae mass moth ocneria omnivore outbreaks pest pests plant procession processionary quarantine reproduction silkworm spines track tread unpaired wildlife worm