Silvanidae

Definition

A family of small beetles (Coleoptera: Cucujoidea) commonly called silvan flat bark beetles, characterized by dorsoventrally flattened bodies adapted for living under bark or in stored products. The family comprises approximately 500 described species in 68 genera, with highest diversity in Old World tropical forests and significant economic importance as pests of stored grain, dried fruit, and timber.

Etymology

From Latin silva (forest, wood), referring to their typical woodland habitat under bark.

Example

The sawtoothed grain beetle (Oryzaephilus surinamensis), a cosmopolitan pest of stored cereals and packaged foods, is among the most frequently intercepted silvanids in quarantine inspections worldwide.

Synonyms

• silvan flat bark beetles

Related Terms

• Cucujoidea
• Coleoptera
• stored product entomology
• flat bark beetle
• Oryzaephilus
• grain pest
• sap beetle

Usage Notes

Specialists distinguish Silvanidae from closely related families Cucujidae (cucujid flat bark beetles) and Passandridae by subtle characters of antennal club structure and mandibular dentition. The common name 'flat bark beetle' is shared with Cucujidae, so context or scientific name is often needed for precision. Several genera (e.g., Oryzaephilus, Silvanus, Ahasverus) are major pests requiring fumigation or controlled atmosphere treatments in grain storage and food processing facilities.