Oak Eggar Lasiocampa quercus

Here's a delightful name-based deception: this common European moth is called the oak eggar because its cocoon resembles an acorn, not because caterpillars feast on oak (they actually eat many plant species). In colder northern regions, development stretches to two years instead of one, earning the nickname 'northern eggar.' The name reveals how early naturalists named species through poetic observation rather than strict biology, adding character to centuries-old taxonomy.