huh? of all the bugs in the world, ladybugs are among the most popular, the majority of them are harmless and prey on agricultural pests. at least where i come from the association with "ladybug" is "cute".
It's bird though, not bug.
Ladybird is the UK term for what Americans call Ladybugs
Then it is going to be adopted everywhere fine except the UK.
I don't see why it wouldn't. Ladybird Books has been around for 157 years: