Why is the earwig so called?

Because of its supposed predilection for entering the human ear. Whether or not they ever did enter the human ear is doubtful, - that they might endeavour to do so, under the influence of fear, is more than probable ; and this, perhaps, has been the origin of their name, and the universal prejudice against them. As it is said that anatomists deny the possibility of their deep or dangerous entrance into the ear, it is a pity that this is not generally known, as it might defend the constitutionally timid from unnecessary alarm. - Brande's Journal.

Earwigs, spiders, bees, and wood-lice, are amongst the few of the insect tribes which pay attention either to their eggs or offspring.