1) Jawbones 1) Lower jaws 
Jaws of insect.
Appendages in Crustacea, in Insecta; primarily used for feeding (biting or chewing).
a pair of mouthparts used for biting or cutting in Arthropods.
first pair of jaws in insects
the first pair of jaws in insects. The mandibles are laterally positioned behind the labrum. They vary in size, shape and are highly modified in form. Mandible shape is strongly influenced by function, for example, in chewing insects the mandibles are stout and tooth-like, while in piercing/sucking insects they are needle- or sword-shaped. Mandib...
jaws; mouthparts in insects used for capturing prey and biting