Where does “Simulium” come from?

Simulium (Translingual) comes from Latin simulo, from Latin similis, from Proto-Italic semalis, from Proto-Indo-European sem- — together, one.

Ancestry of “Simulium”, step by step

Step	Language	Word	Meaning
1	Latin	simulo	I make like, simulate, imitate, copy, represent;...
2	Latin	similis	similar
3	Proto-Italic	semalis	—
4	Proto-Indo-European	sem-	together, one

Simulium — Etymology, Origin & Word History | Etymology Explorer