Synonyms for Deathwatch (same or very similar meaning)
WordNet sense 1 (minute wingless psocopterous insects injurious to books and papers):
booklouse, Liposcelis divinatoriusWordNet sense 2 (bores through wood making a ticking sound popularly thought to presage death):
deathwatch beetle, Xestobium rufovillosumFrom the ODE community, based on WordNetadd/edit