The antennae are usually long and narrow. The legs are long and not modified for jumping or running. Stick insects have chewing mouthparts. Lice Lice are small insects with oval or elongated, flattened bodies. They are pale, yellow to brown or bluish, with dark brown or black spots or bands.
All lice are wingless.
The antennae and eyes are small and the legs are short with strong claws. There are two main groups of lice, recognized by differences in their mouthparts. Sucking lice have specialized sucking mouthparts while chewing lice have chewing mouthparts. They have four membranous wings which are usually gray or pale brown. The front wings are elongate and narrow and the hind wings are slightly shorter.