| Scientific name | Tribolium confusum |
|---|---|
| Group | Beetles |
| Size | 3–4 mm (up to about 0.16 in) |
| Colors | Brown and Red |
| Legs | 6 legs |
| Wings | Yes |
| Where found | Pantry or stored food and Kitchen |
| Most active | Spring, Summer, Fall and Winter |
| Bites | No |
| Stings | No |
| Risk level | Nuisance |
How to identify it
The confused flour beetle is a tiny member of the beetles group. Hard wing covers that meet in a straight line down the back. Check for these three features:
- Flat, elongated reddish-brown body
- Antennae that thicken gradually toward the tip
- Found in flour and powdery foods rather than whole grains
About this bug
A flat, slender, reddish-brown beetle common in flour, cake mixes, cereals and other milled foods. Heavy infestations leave a grayish tint and a sharp, unpleasant smell.
You'll usually find confused flour beetles in pantries and stored food and in the kitchen. They are most active in spring, summer, fall and winter.
Is it dangerous?
They don't bite or sting; infested flour tastes and smells bad.
Our rating: Nuisance, meaning it is a nuisance pest but not a health threat to most people.
When you'll see confused flour beetles
Confused Flour Beetles are most active in spring, summer, fall and winter. In spring, overwintering adults become active and many species lay their first eggs. Summer heat speeds up development, so populations can grow quickly. In fall, many bugs look for shelter, and some move toward or into buildings. In winter, activity continues mainly indoors in heated spaces.
Typical places to check: pantry or stored food and kitchen.
About beetles
The confused flour beetle is one of the beetles. Beetles go through complete metamorphosis: egg, larva (grub), pupa and adult. The larval stage often does the most feeding and damage, and it can last from a few weeks to several years depending on the species. Adults protect their flight wings under hard wing covers called elytra, which is why most beetles look armored and meet in a neat line down the back.
Look closely at larvae as well as adults. Grubs in soil, fuzzy larvae in closets and small worms in flour are all beetle larvae, and finding them tells you where the problem is centered.
What to do about it
- Discard infested flour and mixes in a sealed outdoor bin
- Vacuum cracks and shelf corners where flour dust collects
- Store milled products in airtight containers and use them within a few months
Read the full guide: how to get rid of confused flour beetles.
Bugs that look similar
Signature feature: Confused Flour Beetles: flat, elongated reddish-brown body. Rice Weevils: long, narrow snout extending from the head.
Signature feature: Confused Flour Beetles: flat, elongated reddish-brown body. Drugstore Beetles: oval, reddish-brown body with lengthwise grooves.
Frequently asked questions
What does a confused flour beetle look like?
Flat, elongated reddish-brown body. Adults measure 3–4 mm (up to about 0.16 in).
Does the confused flour beetle bite or sting?
It does not bite. It does not sting. They don't bite or sting; infested flour tastes and smells bad.
Where do confused flour beetles live?
Confused Flour Beetles live in pantries and stored food and in the kitchen.
When are confused flour beetles most active?
Mostly in spring, summer, fall and winter.