potato bug

Short definition from Wiktionary

Noun

1. 1
   A Jerusalem cricket, any of various insects of the genus Stenopelmatus.
2. 2
   A woodlouse, any of various terrestrial crustaceans of suborder Oniscidea.
3. 3
   Any of various insects that feed on or harm potato plants.
4. 4
   Any of various insects that feed on or harm potato plants: A striped blister beetle or old-fashioned potato bug (Epicauta vittata).
5. 5
   Any of various insects that feed on or harm potato plants: A Colorado beetle or Colorado potato bug (Leptinotarsa decemlineata).