Flour Beetle

Flour beetles are adapted to survive in very dry environments.
Flour Beetle Scientific Classification
Flour Beetle Physical Characteristics
Brown, Dark Brown
Found in silos, warehouses, food storage facilties, pantries and cupboards
3 years (36 months)
Flour Beetle Distribition

Flour beetles are adjusted to make it through in extremely completely dry atmospheres.


Flour beetles are darkling beetles in the category Tribolium or Tenebrio. These beetles are well- understood insects of kept grains such as wheat and various other grains. Both most typical kinds are; the baffled flour beetles and red flour beetles. Although they’re extremely respected insects of kept grain items, these beetles are scavengers. They just feed upon grains that insects have actually harmed. Researchers frequently make use of these beetles as research laboratory animals since they are very easy to maintain.

Species, Kind, and Scientific Name

The name Flour beetles put on insects in the category Tribolium or Tenebrio. Both category of insects come from the family Tenebrionidae, generally referred to as darkling beetles. There are greater than 20,000 species of darkling beetles. Insects in this family often tend to choose dark areas and are much more energetic in the evening than throughout the day.

The baffled flour beetle (Tribolium confusum) and the red flour beetle (Tribolium castaneum) are 2 of one of the most typical selections Various other well- recognized species consist of:

  • Aphanotus brevicornis– North American flour beetle
  • Tribolium destructor– harmful flour beetle
  • Tenebrio molitor– yellow mealworm beetle
  • Tenebrio obscurus– dark mealworm beetle

They are located worldwide. They’re taken into consideration significant insects in the farming sector that mostly strike kept foodstuff. Their success en masse is mostly an outcome of their capability to make it through in extreme atmospheres. They’re extremely immune to pesticides, can make it through in very completely dry problems, and are much more immune to radiation than roaches.

Appearance: Exactly How to Recognize Flour Beetle

The name Flour beetles put on insects in the category Tribolium or Tenebrio.iStock.com/ Tomasz Klejdysz

Several species of this beetle appearance fairly similar. As a matter of fact, the baffled flour beetle obtained its name since it is frequently “perplexed” with the red selection. They are usually tiny, typically around 3 – 6 mm( 1/8 – 1/4 inch) in size. Many species are red brownish. Nonetheless, the much less typical Tribolium destructor is usually darker in appearance.

One method to compare the various species is the form of their antenna. The baffled flour beetle has an antenna with 4 clubs, which has a tendency to expand significantly in dimension. The antenna of the red flour beetle has just 3 clubs. The latter can fly brief ranges, while baffled flour beetles can not fly. Like various other darkling bugs, the bodies of flour beetles are squashed. This adjustment makes it much easier for them to creep right into little gaps. The larvae of all species look fairly similar. Larvae. They’re usually white or yellow-colored, with slim and round bodies.

Environment: Where to locate flour beetles

Flour beetles are located worldwide as insects of kept foodstuff. They infest grain- based items, and they’re one of the most typical beetles in kept foodstuff. You might locate them in silos, food stockrooms, galleries, making centers, and food store. They can additionally be located in residences in kitchens and food cupboards. Their squashed body makes it much easier for them to get involved in limited gaps and prosper in dark edges.

Diet: What do flour beetles eat?

Both the grown-up and larvae types of flour beetles feed mainly on kept foodstuff. Nonetheless, they can feed upon both machine made and stuffed items. They have eating mouthparts and can eat flour, grains, and various other items such as dried out beans, peppers, fruits, shelled nuts, peas, and delicious chocolate. They might also get involved in gallery samplings and have actually been located in some medications.

Their larvae can not pass through entire and intact grain, so they mainly target entire grains harmed by various other insects or currently refined right into flour. Additionally, their feeding tasks create damages to food since it alters the taste of the items they infest. They additionally leave their fecal pellets, cadavers, and nasty- scenting secretions in plagued items.

What Consumes Flour Beetles?

Due to the fact that these beetles are much more generally located inside, they’re not usually impacted bypredators Theoretically, any type of insectivorous animal can feed upon these little bugs. This consists of birds, tiny rodents, lizards, and frogs. They do not have any type of all-natural defenses, and the majority of species can not fly.

Avoidance: Exactly How to Eliminate Flour Beetles

To manage kitchen insects such as this, the primary step is to recognize the resource of the invasion and eliminate any type of plagued products. Nonetheless, recognizing all plagued items is typically hard. You ought to look very closely at the earliest items on the rack as they’re most likely to be the resource of the invasion. Next off, inspect the container for indicators of damages. Normally, you ought to make use of or eliminate dried out foodstuff within 2 to 4 months of their acquisition. You ought to additionally save foodstuff in impermeable containers.

When you recognize plagued items, you ought to discard them immediately. Keeping great hygiene can assist protect against problems. Constantly vacuum cleaner kitchen locations occasionally. These beetles can not make it through temperature level extremes, so warm or chilly therapy can assist remove this parasite. Cool for 7 to 2 week or warm in the stove at 130 levels F for regarding 1 hr.

You can utilize chemical control on unusual events. The pesticide spray can be related to feasible hiding areas such as gaps around kitchens, cabinets, and cabinets. Pesticide to make use of ought to be identified for usage in food- storage space locations. Products such as this consist of energetic components like pyrethrins, allethrin, and tetramethrin. They’re brief- lived and fairly risk-free contrasted to normal pesticides.


  1. Wikipedia, Available here: https://en.wikipedia.org/wiki/Confused_flour_beetle
  2. Nature.com / Michael D. Pointer, Matthew Gage, Lewis Spurgin, Available here: https://www.nature.com/articles/s41437-021-00420-1
  3. Wikipedia, Available here: https://en.wikipedia.org/wiki/Red_flour_beetle
  4. Texas A&M Extension / Mike Merchant, Bradleigh S. Vinson, Wizzie Brown, Available here: https://extensionentomology.tamu.edu/insects/flour-beetle/

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