There IS an almighty designer (this can NOT be from evolution). God.
I’m sure some atheist can come up with a convoluted theory..................
AI Overview
The evolution of Steinernema carpocapsae is characterized by a co-evolutionary relationship with its symbiotic bacteria, Xenorhabdus nematophila, which has led to the development of an efficient insect-killing mechanism. This symbiosis allows the nematode to overcome host immunity and quickly kill the insect, which provides a food source for the nematode. Key aspects of its evolution include the development of a genomic toolset for parasitism, such as expanded genes for proteases, and the adaptation of its lifecycle, including “ambushing” host-finding behaviors like “nictation” and “jumping”.
https://www.google.com/search?q=Steinernema+carpocapsae+evolution