4b4845dc_imber_Surveys___Causes_of_Damp__Tunnels
[Common Name] Bark borer, Waney edge borer [Latin Name] Ernobius Mollis [Type] Small insect [Wood Targeted] Softwood, must have bark present [Spreads] Flight [Damage to wood] Mainly to the bark, some shallow holes in wood [Frass (bore dust)] Gritting bun shaped pellets, light (sap) and dark (bark) colours [Emergence holes] 2mm [Tunnels] 
Round mostly in bark
Aquarius Timber Preservation | Damp Timber Surveys | Causes of Damp
Tunnels