Assassin bug identification (Reduviidae (wheel bug and kin))


Insect identifier · Indoor insects

How to identify a Assassin bug

Reduviidae (wheel bug and kin)
· Also called wheel bug, kissing bug look-alike, reduviidae

Assassin bug identification photo

People searching “what does a assassin bug look like” or “assassin bug bite” want a field ID, not a scare. Assassin bug (Reduviidae (wheel bug and kin)) is a indoor pests in this guide. Also called wheel bug, kissing bug look-alike, reduviidae.

A gray bug with a cog on its back in the tomato plants is a wheel bug, not a kissing bug.

What does a assassin bug look like?

Assassin bug is Medium to large, 15–35 mm. Colors people notice: gray, brown, black. Field marks: Long beak tucked under the head; Wheel bug has a semicircular crest; Slow, on plants.

Assassin bug is Medium to large, 15–35 mm. Colors people notice: gray, brown, black. Field marks: Long beak tucked under the head; Wheel bug has a semicircular crest; Slow, on plants. If the marks fail, open the look-alike pages before forcing this name.

Identification marks

  • Long beak tucked under the head
  • Wheel bug has a semicircular crest
  • Slow, on plants

Size: Medium to large, 15–35 mm
Colors: gray, brown, black
Where: outdoor

What a typical assassin bug bite looks like

Typical assassin bug bite or sting
A typical pattern. Reactions vary. This is a guide photo, not a diagnosis.

One very painful bite if handled. Not a night face-feeder like a kissing bug. Do not pick it up Wash and ice

One very painful bite if handled. Not a night face-feeder like a kissing bug. Fever, spreading redness, or trouble breathing needs a clinician.

If you were bitten

  1. Do not pick it up
  2. Wash and ice
  3. Seek care if swelling spreads or you cannot confirm it was not a kissing bug

Assassin bug vs Kissing bug

Wheel bug: crest on the back, garden, day. Kissing bug: cone head, night, porch light, no crest.

Range and season

Assassin bug is active summer and fall. Typical places: garden, woods, yard. Predatory true bugs. Wheel bug is the big one with a cog on its back. A defensive bite is very painful. Not the same as a kissing bug, though they are relatives.

Gardens and woodland edges across North America.

Predatory true bugs. Wheel bug is the big one with a cog on its back. A defensive bite is very painful. Not the same as a kissing bug, though they are relatives.

Summer and fall

Common questions

Wheel bug vs kissing bug?

Wheel bugs are daytime garden predators with a cog-like crest. Kissing bugs are night feeders, often near lights and kennels.

Do assassin bugs bite people?

Only in defense. The bite hurts more than it looks.

Related identification pages