Plausible Xenomorph-like Life Cycle

I have a species that I wish to create whose life cycle is similar to a Xenomorph from the Alien series. By this, I mean to create a species wherein:

• A Xenomorph, or Species A, the base creature, by some method (egg-laying, birth, etc.), produces a Species B, a Facehugger
• The Facehugger, by some other method, (parasitism in the movies), breeds the true baby stage of a Xenomorph, Species A. In the movies, the Facehugger implants a chestburster into a host that cocoons into a Xenomorph.

My question is, is there any plausible way for a lifeform like this to be forced to evolve this way? I am fine with an advanced civilization engineering the ecosystem to push pressure into this kind of species, but I am wondering what factors might lead to such a species evolving, and if there are any close real life parallels.

The end result being:

Lifeform A giving birth to Lifeform B which then gives birth to Lifeform A's infant stage.

posted about 5 years ago

Maverick Alpha‭

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