- an assassin bug, Arilus cristatus, that has a toothed, semicircular crest on the pronotum and preys on other insects.
Origin of wheel bug
An Americanism dating back to 1805–15
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a large predatory North American heteropterous insect, Arilus cristatus, having a semicircular thoracic projection: family Reduviidae (assassin bugs)