Martesia striata (Linnaeus, 1758)

A dead shell found in rotten timber. This pest species is a borer of wood, with only the siphons
protruding from the entrance. Live animals are rarely seen. Boring is carried out mechanically, so
this species is also able to bore into plastic and lead, making it destructive of cables and pipes
used in mills and power plants that take water from the sea for cooling.

Above..the accessory shell plate, the mesoplax

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