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Pest Information

Silken Fungus Beetles

Silken Fungus Beetles

  • Latin Name: Cryptophagidae
  • Common Name: Silken Fungus Beetles
  • Other Names: N/A

Pest Details

Silken Fungus Beetles
Silken Fungus Beetles
Silken Fungus Beetles

Origin:

Many native species are found in North America, and likely some introduced species are associated with infestations of food products.

Biology:

This is a family of about 150 species in North America. Almost all species are very small adult beetles that are usually associated with fungus of some kind. They may also occur in old bird or rodent nests as well as occasionally infesting foods that are in poor condition. Their presence in a structure may be an indication that an excessive moisture condition is present with growth of molds or decay fungi. They may also be in grain-based foods that have been stored too long or in damp condition, and around 2 dozen species have been identified as pests of stored foods.

Identification:

Most species are tiny, from 1 to 5 mm long and yellow-orange to brown in color. Under high magnification you will be able to see short silky hairs covering much of the upper sides of the elytra and thorax.

Characteristicts Important to Control:

Since they are associated with conditions or foods that are not wanted in a structure the source of the infestation needs to be discovered and corrected. Insecticide applications may not be necessary and will be of little help until the source is found.

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