Coccinellidae prey species that various Coccinellidae may attack is much wider. A genus of small black ladybirds, "Stethorus", presents one example of predation on non-Sternorrhyncha; they specialise in mites as prey, notably "Tetranychus" spider mites. "Stethorus" species accordingly are important in certain examples of biological control. They are natural predators of a range of serious pests, such as the European corn borer, a moth that costs US agriculture industry more than $1 billion annually in crop losses and population control. Various larger species of Coccinellidae attack caterpillars and other beetle larvae. Several genera feed on various insects or their eggs; for
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