You indentify them by their size,how they look like,check how flies and most important see if it is a flying insect
Some bugs have a color like the fire ant is red and that's how people know its a fire ant.
Dragonflies have 4 wings
You need much more information to identify an insect.
I would like for you to identify this insect, please.
A carpet beetle or a drugstore beetle is near to your description. They are gray in color with black spots.
I think perhaps honeybee
you can identify it by looking at its color and its antlers
Key is the device used in the identification of insect specimen. For example keys to the insect order is used to identify the insect order. Keys to the families are used to know the family of insects.
a ladybug.
The two things that attract an insect to a flower are the smell and the color.
To identify the symptoms of a poisonous bug or insect bite from one that is innocuous, try to use an online resource such as WebMD.com to easily differentiate between harmful and benign bites.
Try here: http://www.whatsthatbug.com/
The resistor color code use to help to identify the resistance of the resistor. There are four color in the resistor that help to identify the resistance of the resistor. The first and second color represent the numerical value of the resistor. The third color represent the multiplier. The four color represent the tolerance.
It is not necessary. Some flowers attract insect by their bright color as in case of Petunias.