- booklouse, book louse, deathwatch, Liposcelis divinatorius - minute wingless psocopterous insects injurious to books and papers
--1 is a kind of psocopterous insect
--1 is a member of Liposcelis, genus Liposcelis
--1 has particulars: common booklouse, Trogium pulsatorium - deathwatch beetle, deathwatch, Xestobium rufovillosum - bores through wood making a ticking sound popularly thought to presage death
--2 is a kind of beetle
--2 is a member of Anobiidae, family Anobiidae