Wasps and Bee's are insects that sting.
having a sting or the capacity to sting; "stinging insects"; "stinging nettles"
The queens and workers can but their sting does not have barbs like a the honeybee, so they can sting more than once. Male's cant sting because they don't have a stinger. Males have a genital capsule for mating.
Over nine thousand!
Entomologist study all types of insects.
Male bees, or drones, do not have a sting. In bees, wasps and similar insects the sting is a modified ovipositor (egg laying tube) -- an organ that males do not have.
It could be a grasshopper or a lacewing or many other insects.
Wasps have one sting, as do all other similar insects.
The two main reasons are self-defence and in defence of the colony.
Formic acid is the chemical in the sting or bite of most stinging insects.
Many, many different types of insects are determined by their different types of mouth.
It depends how many and what types of insects.