FEMALE LOSS OF LIFE STYLE. “Yet despite the apparent virtues of holometaboly, some insects have minimised or even lost the holometabolous lifestyle, at least from some part of the life cycle. With respect to holometabolous insects that have entirely lost complete metamorphosis, this has only occurred in females, where it has been achieved via the deletion of the pupal and post-metamorphic stage (i.e. the ancestral ‘adult’), via a developmental process known as paedomorphosis.”
http://onlinelibrary.wiley.com/doi/10.1111/een.12313/full