Apparently the female seminal receptacle is also very long. In fact, the increasing length of this receptacle is one of the explanations for the extreme sperm length.
Drosophila females have evolved to fertilize their eggs with particularly long sperm. Only large, healthy males are able to produce large quantities of gigantic sperm, and if a female reproduces with healthy males, her offspring will have genes that make them healthy, too.
The sperm cell of the drysophila fruit fly is 6 times longer than its own body
Is it wrong to want to see an image of that out of morbid curiosity
I mean, how does that even work
But also I'm going to need a source for that just incase its bullshit
https://blogs.iu.edu/sciu/2023/05/06/the-longest-sperm-on-earth/
Apparently the female seminal receptacle is also very long. In fact, the increasing length of this receptacle is one of the explanations for the extreme sperm length.