Definition

Noun: 1. A large predatory North American insect: The wheel bug is a specific type of true bug (order Hemiptera) known for its size and predatory nature. 2. An insect that sucks the blood of other insects: It is characterized by its specialized mouthpart (a rostrum) used to pierce its prey and consume bodily fluids. A distinguishing physical feature is a prominent, cog-like crest on its thorax.

Usage Examples

• Noun:
  • The wheel bug is considered a beneficial insect in gardens because it preys on pests.
  • I carefully observed the wheel bug as it stalked a caterpillar on the tomato plant.
  • While fascinating, you should avoid handling a wheel bug as it can deliver a painful bite if threatened.

Advanced Usage

• As a biological control agent: In entomology and agriculture, the term is used to discuss natural pest management.
  • The presence of wheel bugs can reduce the need for chemical pesticides.

Variants and Related Words

• Assassin bug (Family Reduviidae): The wheel bug () is a member of the assassin bug family. This is a broader category.
• Predatory insect: A general descriptive term for insects that hunt other organisms for food.

Synonyms

• Assassin bug (specific to its family)
• Predatory bug (general description)

Notes on Meaning

The term 'wheel bug' refers exclusively to the specific species Arilus cristatus. It is not a general term for any large bug. Its name derives from the distinctive, wheel-shaped crest on its back. While it preys on other insects, its bite is defensively painful to humans, similar to a bee sting.

Noun

1. large predatory North American bug that sucks the blood of other insects