A gnat is any tiny fly in the suborder Nematocera.
"Gnat" is a loose descriptive category rather than a technical term. They can be both biting and non-biting. The biting ones are often called midges. Often they fly in large numbers, called clouds, in damp places like the Scottish Highlands.
One interesting group are the eye-gnats. the Smithsonian Institution describes them as “non-biting flies, no bigger than a few grains of salt, ... attracted to fluids secreted by your eyes”.
A: A gnat is any tiny fly in the suborder Nematocera.
A: No, "gnat" is a loose descriptive category rather than a technical term.
A: Yes, gnats can be both biting and non-biting.
A: Biting gnats are often called midges.
A: Gnats often fly in large numbers, called clouds, in damp places like the Scottish Highlands.
A: Eye-gnats are a group of non-biting flies attracted to fluids secreted by your eyes.
A: Eye-gnats are no bigger than a few grains of salt, according to the Smithsonian Institution.
