Coccinellidae wide variety of beetle species in other families as "ladybirds", i.e. coccinellids. Beetles are particularly prone to such misidentification if they are spotted in red, orange or yellow and black. Examples include the much larger scarabaeid grapevine beetles and spotted species of the Chrysomelidae, Melyridae and others. Conversely, laymen may fail to identify unmarked species of Coccinellidae as "ladybirds". Other beetles that have a defensive hemispherical shape, like that of the Coccinellidae (for example the Cassidinae), also are often taken for ladybirds. A common myth, totally unfounded, is that the number of spots on the insect's back indicates its age.
Form (education) owing to the 4-year college/university system. If there is more than one form for each year group they will normally be differentiated by letters, e.g., "upper four B", "lower two Y". Schools do not follow a consistent pattern in naming forms. Another common identification for form, and one of the most common in New Zealand, is the number of the year they are in, followed by the initials of the teacher who takes the form class. E.g., a Year 7 form whose teacher is John Smith would be 7JS (or 7SJ or 7SM if there is already another teacher in