Ambitiosior stultitia is highly sexually dimorphic, like all the organisms in its ecosystem. It has trilateral symmetry and three sexes, (male, female, and neuter), again very similarly to the norm in its ecosystem.
The male Ambitiosior stultitia is a hemolymph drinker, with a sharp proboscis for that purpose and wings. The female, also winged, uses a similar proboscis to take milksap from sedentary pseudotrees. The wingless neuter is a photovore, feeding on sunlight.
But the true distinction of Ambitiosior stultitia is the final stage of its life cycle. Rather than mating, the three sexes spin a cocoon together and emerge after a pupal period as the mated form, which utilizes the nutrients gathered by all three progenitors.
This form, which is wildly dissimilar from the others, was initially classed as a different species. It has wings, is heavily armored, and emerges pregnant from its chrysalis. With no working mouthparts, its only purpose is to find and kill a suitable host in which to lay its eggs, after which it dies.