Bug Bite Types: A Visual Identification Chart
Educational only. This chart helps you compare bug bite types — it is not medical advice. See a professional for severe or worsening reactions.
Different bugs leave different marks. This visual chart compares the 12 most common bug bite types side by side — by how they look, the pattern they form, where they appear, and how they feel — so you can narrow down what bit you at a glance.
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| Bug | Appearance | Pattern | Common location | Sensation |
|---|---|---|---|---|
| Mosquito | Puffy round welt, pale center | Single, scattered | Exposed skin | Itchy quickly |
| Bed bug | Small red bumps | Line / zigzag of 3+ | Arms, shoulders, neck | Itchy, noticed on waking |
| Flea | Tiny red dots with halo | Cluster | Ankles, lower legs | Very itchy |
| Chigger | Small red welts | Cluster | Waistband, sock line | Intensely itchy |
| Tick | May still be attached; possible bullseye | Single | Scalp, groin, behind knees | Often painless |
| Spider | Two tiny marks; may blister | One or two | Anywhere | Pain or itch |
| Fire ant | Red bump → white pustule | Cluster | Feet, legs | Burning, then itch |
| Bee / wasp | Swollen red welt | Single sting | Anywhere | Sharp pain instantly |
| Horsefly | Large painful red welt | Single | Exposed skin outdoors | Painful bite |
| Mite | Small red bumps / rash | Cluster | Skin folds | Itchy, often at night |
| Sandfly / midge | Small itchy red dots | Cluster | Ankles, exposed skin | Itchy |
| Kissing bug | Red bumps, often near the mouth/eyes | Cluster near face | Face | Mild itch |
Reading the pattern: a line usually means bed bugs · a tight cluster low on the legs often means fleas or chiggers · a single painful sting points to a bee, wasp, or ant.
How to use this chart
Start with the pattern (it's the most distinctive clue), then confirm with appearance and location. For the full walkthrough and pictures of each bite, see our complete bug bite identification guide.
Save or share this bug bite chart
Bookmark this page or save the chart below — handy for the next time you're not sure what bit you. Pin it, print it, or share it.
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