Male and female larv similar, apterous, naked or covered, active.
Why it is, in the Insecta, that islands should predispose to an apterous state more than continents, it is not easy to speculate.
Those which resemble the perfect insect, except that they are apterous, or not yet furnished with organs of flight.
Fleas are apterous, walk but little, but leap to a height equal to two hundred times that of their own body.
In apterous beetles the elytra are often connate, or have both sutures as it were soldered together.
Whereas the former is merely an apterous creeping grub, the latter is an insect provided with wings.
It is an apterous genus, and of eminently sluggish habits; and what is the consequence?
In the autumn, however, the eggs which are laid give rise in part to winged forms and in part to apterous forms.
From this egg in the spring emerges an apterous female who makes a gall in the new leaf and lays therein a large number of eggs.
It appears to be apterous, and is said in scent and colour to resemble the bed-bug.