Woodworm is the generic term for all wood boring insects. Some, if found to be active, may require chemical treatment whilst others do not, making correct identification imperative.    

Bark Boring Beetle (Waney Edge Borer) - Ernobius mollis

Common Furniture Beetle - Anobium punctatum

Death Watch Beetle Xestobium rufuvillosum

House Longhorn Beetle - Hylotrupes bajulus

Powder Post Beetle - Lyctus Brunneus

Wood Boring Weevils - Pentarthrum huttoni and Euophryum confine

Woodworm galleries exposed during sanding