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Planaria is a genus of planarians in the family Planariidae. Due to its excellent ability to regenerate, species of Planaria has also been used as model organisms in regeneration studies. [ 1 ] When an individual is cut into pieces, each piece has the ability to regenerate into a fully formed individual. [ 2 ]
Order: Tricladida: Superfamily: Planarioidea: Family: ... See text Planariidae is a family of freshwater planarians. The type genus is Planaria Müller, 1776. [1 ...
Some species have auricles that protrude from the margins of the head. The auricles can contain chemical and mechanical sensory receptors. [14] The number of eyes in the triclads is variable depending on the species. While many species have two eyes (e.g. Dugesia or Microplana), others have many more distributed along the body (e.g. most ...
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Some species are well adapted to human-disturbed environments and many of those have been introduced in areas outside of their native range. In some localities, such as the United Kingdom, the number of introduced land planarian species greatly surpass the number of described native species. [21]
The first species of Luteostriata was described in 1857 by Max Schultze and Fritz Müller as a Brazilian yellow planarian with a broad black longitudinal stripe in the middle of the back and a narrow deep orange stripe on each side of it. [5] They identified it as Planaria elegans, a species described by Darwin, and put it in their new genus ...
Species of Girardia are very similar to species of other genera of Dugesiidae and few apomorphies that clearly define the genus are known. [1] One of the few exclusive characteristics is the presence of pigment granules in the outer pharyngeal wall. [2] Until 1991 Girardia was considered a subgenus of Dugesia, then it was upgraded to the genus ...
During most of the 20th century, many new land planarian species, mostly from Australia and South America, were placed in Geoplana. In 1955, Eudóxia Maria Froehlich defined that Geoplana vaginuloides would be the type-species of Geoplana , as it was the first species listed by Stimpson.