So I've noticed this for quite some time now, and never said anything cause I figured it'd be noticed by someone by now. Long story short, the Green variant of the Butt Bug/Hilinara Parasite doesn't use the proper mechanics. The codex entry states that it will "continuously lays full-sized eggs", and that it will continue to do so until fertilized. To my knowledge and understanding (and from how it used to work before the javascript rewrite), it is not supposed to force the player to lay the unfertilized clutches, and only lay fertilized ones.
TL: DR: Green Hilinara lays unfertilized eggs from player before fertilization, like the Biege Hilinara.
Perhaps the mechanics simply changed and this is intended, but if not then I would like to see a return to the whole "grow gravid with as many eggs as you want" thing the green variant has going for it. I've attached my save file and a screenshot.
TL: DR: Green Hilinara lays unfertilized eggs from player before fertilization, like the Biege Hilinara.
Perhaps the mechanics simply changed and this is intended, but if not then I would like to see a return to the whole "grow gravid with as many eggs as you want" thing the green variant has going for it. I've attached my save file and a screenshot.