What is the most common species of bee?

Answer 1

In the United States, they are must commonly called ladybugs. In other English-speaking countries, they are more commonly called ladybirds. A more accurate name for them is lady beetle or ladybird beetles, since they are not technically "bugs."

Answer 2

The red ladybird with black spots is the most common species of ladybirds

Answer 3

In Europe, USA, Canada, Australia and New Zealand, the most common species of bee is probably Apis Mellifera. In the rest of the world it is probably Apis Ceranae.