Perlidae
The Perlidae are a family of stoneflies, with more than 50 genera and 1,100 described species. The majority of the Perlidae are found in eastern North America, but they occur worldwide except for Antarctica and parts of Africa. Their lifecycles range between one and three years. They adults emerge in the summer; they are very active and known to be attracted to light sources. They are usually very sensitive to changes in environment. Perlidae are usually lotic and lentic erosional. They are found in cool, clear medium-sized to large streams and sometimes in larger, warm rivers that carry silt. They are crawlers and can move quickly. In still water, no water moves over their gills, so they move their bodies up and down to keep oxygen flowing over them. They are engulfer-predators. They consume all types of invertebrates. Very young larvae are collector-gatherers. Genera These 56 genera belong to the family Perlidae: Acroneuria Pictet, 1841 Agnetina Klapálek, 1907 Anacroneuria Klapálek, 1909 Attaneuria Ricker, 1954 Beloneuria Needham & Claassen, 1925 Brahmana Klapálek, 1914 Calineuria Ricker, 1954 Caroperla Kohno, 1946 CHINOPERLa Zwick, 1980 Claassenia Wu, 1934 Dinocras Klapálek, 1907 Doroneuria Needham & Claassen, 1925 Eccoptura Klapálek, 1921 Enderleina Jewett, 1960 Eoperla Illies,