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Perla (stonefly)
''Perla'' is a genus of common stoneflies in the family Perlidae. There are at least 30 described species in ''Perla''. Species These 30 species belong to the genus ''Perla'': * '' Perla abdominalis'' Guerin-Meneville, 1838 * '' Perla aegyptiaca'' Pictet, F.J., 1841 * '' Perla bipunctata'' Pictet, F.J., 1833 * '' Perla burmeisteriana'' Claassen, 1936 * '' Perla carantana'' Sivec & Graf, 2002 * '' Perla carletoni'' Banks, 1920 * '' Perla caucasica'' Guerin-Meneville, 1838 * '' Perla caudata'' Klapálek, 1921 * '' Perla comstocki'' Wu, C.F., 1937 * '' Perla coulonii'' Pictet, F.J., 1841 * '' Perla cymbele'' Needham, 1909 * '' Perla duvaucelii'' Pictet, F.J., 1841 * '' Perla grandis'' Rambur, 1842 * '' Perla horvati'' Sivec & Stark, 2002 * '' Perla illiesi'' Braasch & Joost, 1973 * '' Perla ione'' Needham, 1909 * '' Perla kiritschenkoi'' Zhiltzova, 1961 * '' Perla lineatocollis'' Blanchard, 1851 * '' Perla madritensis'' Rambur, 1842 * '' Perla marginata'' Panzer, 1799 * '' Perla ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plecoptera
Plecoptera is an order of insects, commonly known as stoneflies. Some 3,500 species are described worldwide, with new species still being discovered. Stoneflies are found worldwide, except Antarctica. Stoneflies are believed to be one of the most primitive groups of Neoptera, with close relatives identified from the Carboniferous and Lower Permian geological periods, while true stoneflies are known from fossils only a bit younger. Their modern diversity, however, apparently is of Mesozoic origin. Plecoptera are found in both the Southern and Northern Hemispheres, and the populations are quite distinct, although the evolutionary evidence suggests species may have crossed the equator on a number of occasions before once again becoming geographically isolated. All species of Plecoptera are intolerant of water pollution, and their presence in a stream or still water is usually an indicator of good or excellent water quality. Description and ecology Stoneflies have a generaliz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
