the queen lays eggs and the facehugger deliver them into human when fully grown and exposed from their eggs

@mariosargac (View Post)
yes its an official name given to them by the director FaceHuggers are named that because they appear to be hugging your face

First FaceHugger Born (tall about 500+ lb when full grown) :

Evolved FaceHugger (about 10 to 15 lb when full grown at most) : http://www.facehugger.info/facehugger.jpg