Wasps look much like ants, having slim bodies with a narrow waist. Wasps are also mistaken for bees, where bees are covered with tiny hairs and wasps are not, wasps are more shiny in comparison. Colouring between bees and wasps may be similar, but that will be all. Wasps can be aggressive with some species being more so than others, so it is best you avoid all wasps. There are many types and species of wasps with most differing in colour. Paper wasps can be identified by their black bodies with bright yellow markings, normally stripes and grow as large as 25 millimetres long. The spider wasp has long back legs compared to the rest as is black, blue or red with white or orange markings. Potter wasps tend to be black with yellow stripes around their legs and abdomen. A bald faced hornet is metallic blue, green or red with black markings on its body. The size of a wasp can also help in identifying it. A potter wasp can grow as long as 6 millimetres, sphecid wasps 50 millimetres and the spider wasp 12 millimetres in length.