Perlesta Bjostadi
''Perlesta'' is a genus of common stoneflies in the family Perlidae. There are more than 30 described species in ''Perlesta''. Species These 33 species belong to the genus ''Perlesta'': * ''Perlesta adena'' Stark, 1989 * '' Perlesta armitagei'' Grubbs & DeWalt, 2018 * '' Perlesta baumanni'' Stark, 1989 * '' Perlesta beatyi'' Kondratieff, Zuellig & Lenat, 2011 * '' Perlesta bjostadi'' Kondratieff & Lenat, 2006 * '' Perlesta bolukta'' Stark, 1989 * '' Perlesta browni'' Stark, 1989 * '' Perlesta chaoi'' Wu, 1948 * '' Perlesta cinctipes'' (Banks, 1905) * '' Perlesta cranshawi'' Kondratieff & Kirchner, 2006 * '' Perlesta dakota'' Kondratieff & Baumann, 1999 * '' Perlesta decipiens'' (Walsh, 1862) * '' Perlesta durfeei'' Kondratieff, Zuellig & Kirchner, 2008 * '' Perlesta ephelida'' Grubbs & DeWalt, 2012 * '' Perlesta etnieri'' Kondratieff & Kirchner, 2002 * '' Perlesta frisoni'' Banks, 1948 * '' Perlesta fusca'' Poulton & Stewart, 1991 * '' Perlesta georgiae'' Kondratieff, Zuellig & ...
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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 Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), de ...