You shouldn't have told us it's a work of fiction, it's good to keep the reader in a a suspense.
I really love where the idea of the story is coming from, truly there are decline in bees pollination in some farms even in Nigeria. But don't think engineering another insect for it is the way out.
If scientist can do that, In so many centuries to. Come women will be engineered to produce only baby, some will be engineered to produce milk, the beautiful one will be made for sex.
Just think about it.