The Giant Water Bug is yellow after a few hours of birth then to their browny black colour.Eggs are layed on placed on a tree or on the ground.The eggs are glued on the males back by the females.Eggs hatch in one to two weeks, with total development time ranging from one to
two months. Adults may overwinter in the mud.
this information was looked up on http://edis.ifas.ufl.edu/in578