During the middle of the mating season of the desert horned lizard Phrynosoma platyrhinos, the female worm is already filled with the greatest number of eggs it can contain in itself.
S. phrynosoma takes advantage of these active periods of the two hosts' life cycle and spread their offspring successfully.
[2] The fully developed S. phrynosoma lives inside the stomach of P. platyrhinos and mating occurs there as well.
Another unique aspect of the life cycle of S. phrynosoma is that it does not just lay eggs that are cast out of the lizard and left alone exposed to other elements.
The ant finds the dead body filled with eggs and use it to feed its brood of growing larvae.