They have been found in the pleural cavities of cattle suffering from pleuropneumonia. These organisms are often called MLO (mycoplasma-like organisms) or, formerly, PPLO (pleuropneumonia-like organisms). Important characteristics of Mycoplasma species
Cell wall is absent and plasma membrane forms the outer boundary of the cell. Due to the absence of cell walls these organisms can change their shape and are pleomorphic. Lack of nucleus and other membrane-bound organelles. Genetic material is a single DNA duplex and is naked. Ribosomes are 70S type. Possess a replicating disc at one end which assists replication process and also the separation of the genetic materials. Heterotrophic nutrition. Some live as saprophytes but the majority are parasites of plants and animals. The parasitic nature is due to the inability of mycoplasmal bacteria to synthesise the required growth factor. Cell and colony morphology
Due to the lack of a rigid cell wall, Mycoplasma species (like all Mollicutes)  can contort into a broad range of shapes, from round to oblong. They are pleomorphic and therefore cannot be identified as rods, cocci or spirochetes.Colonies show the typical „fried egg” appearance (about 0.5 mm in diameter). Reproduction
In 1954, using phase-contrast microscopy, continual observations of live cells have shown that Mycoplasma species ("mycoplasmas", formerly called pleuropneumonia-like organisms, PPLO, now classified as Mollicutes) and L-form bacteria (previously also called L-phase bacteria) do not proliferate by binary fission, but by a uni- or multi-polar budding mechanism.
Simyra  is a genus of moths of the family Noctuidae. The genus was described by Ochsenheimer in 1816. Species
Simyra nervosa (Denis & Schiffermüller, 1775) central and southern Europe
Simyra albovenosa (Goeze, 1781) Europe, Turkey, northern Iran, Transcaucasia, Central Asia, southern Siberia
Simyra dentinosa Freyer, 1838 south-eastern Europe, Turkey, Caucasus, Transcaucasia, Lebanon, Syria, Israel, Egypt, Iran
Simyra albicosta Hampson, 1909 Nilgiri Mountains of India
Simyra capillata Wallengren, 1875 South Africa
Simyra confusa (Walker, 1856) Sri Lanka, Arabia
Simyra conspersa Moore, 1881 Punjab, Sikkim, Bengal
Simyra renimaculata (Osthelder, 1932) Turkey
Simyra saepestriata (Alphéraky, 1895) Japan, Korea, Mongolia
Simyra sincera Warren, 1914
Simyra splendida Staudinger, 1888 Turkestan, Tibet, southern Siberia, Korea
Simyra insularis (Herrich-Schäffer, 1868) Ontario, New York, Massachusetts, Kansas, California, New Mexico, Cuba
Simyra unifacta Dyar, 1912 Mexico


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