Find YOUR local branch
Stored Product Pests covers a large variety of insects, including beetles and moths.
Learn more below about common species of Stored Product Insects (SPIs) found in the U.S.
The Almond Moth goes by the nicknames “Cocoa Moth” and “Tropical Warehouse Moth”. The almond moth infests stored products and the adults can fly.
A sign of infestation in the product is contamination with silk webbing, frass, cast skins, pupal cases and adult remains.
Covered in brown and golden hairs, the Australian spider beetle has a spider-life appearance and adults grow to an approximate 2.4 – 4mm in length.
Australian spider beetles live for up to 3 – 4 months at 20 - 25°C.
Larvae are often found feeding on miscellaneous debris, and the Australia spider beetle possesses the ability to bore into various inedible materials prior to pupation. Active in dark, damp places, the Australian spider beetle is often associated with bird nests.
(Various species - Liposcelis bostrychophila, Lepinotus patruelis)
An approximate 3.5 – 4.5mm in length, male broadhorned beetles have two enlarged mandibles on the head, giving the appearance of horns and thus their name. Females are very similar in appearance to the confused flour beetle.
With temperature limits of 60-90°F, broadhorned flour beetles cannot complete their life cycle below 50°F.
Feeds on flour, dough, semolina etc. Moth eggs and larvae may supplement the broadhorned flour beetle diet.
Cheese mites have soft, hairy cream white bodies with 8 hairless legs and adults grow up to an approximate 0.5mm in length.
The cheese mite favors warm, moist conditions and eggs mature in 10 days at room temperatures. Females can lay up to 900 eggs in a lifetime at a rate of 20 – 30 a day. Adult cheese mites can live for up to 60 – 70 days.
With a preference for old cheese to young cheese, these mites also feed on nuts, dried eggs, fruit, flour and tobacco. Cheese mites are capable of contaminating foods to cause skin or gut irritation.
The Cigarette beetle is a very common commercial pest.
The confused flour beetle was named because of the confusion over its identity. It is a very common commercial and pantry pest.
The drugstore beetle (also known as the Biscuit Beetle) gained its name because it was frequently found feeding on drugs in pharmacies many years ago. Now, they are customarily found infesting all types of dry stored food products, spices, seeds, grains and dried plant material.
The Granary Weevil is among the most destructive of all stored grain insects. The larvae develop inside kernels of whole grain in storage. This makes an infestation difficult to remove in the milling process.
This beetle lives and feeds in warehouses and stores, especially feed and health food stores.
Also known as the Greater Rice Weevil. Maize Weevils are frequently regarded as primary pests of grain since they are able to infest otherwise undamaged grain.
They have also been seen to infest buckwheat, peas, acorns, chestnuts and cottonseed.
The Mediterranean flour moth larva is a very common commercial and pantry pest. It is a pest of mills and warehouses as it can clog machinery with its webs.
Rice weevils are pests of stored grain and seeds.
Is a very common commercial pest infesting a variety of grain and food materials. The rust-red flour beetle is frequently found in stored products in the U.S.
The saw-toothed grain beetle is one of the most common insects in stored grain and cereal products
Find YOUR local branchPlease try again...