| Cratera tui | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Platyhelminthes |
| Order: | Tricladida |
| Family: | Geoplanidae |
| Genus: | Cratera |
| Species: | C. tui |
| Binomial name | |
| Cratera tui Araujo, Carbayo, Riutort & Álvarez-Presas, 2020 | |
Cratera tui is a species of land planarian belonging to the subfamily Geoplaninae. [1] It is found in Serra da Bocaina National Park and Itatiaia National Park in Brazil. [2]
Cratera tui is a flatworm around 45–70 mm in length and 7 mm in width. The body is slightly lanceolate, with parallel margins, a rounded front tip, and a pointed back tip. The body is widest at the pharynx, with a gradual narrowing towards the front and an abrupt narrowing towards the back tip. The dorsal side of the body has a melon yellow median stripe that is bordered on both sides by a jet black stripe. Outside of the jet black stripes are traffic white marginal stripes. The body margin is jet black. The front of the body fades into a carmine red color. The ventral side of the body is grey-white. [2]
Aside from its coloration and length, it is distinguished from other members of Cratera by having marginal eyes, a cylindrical pharynx, a pharyngeal pouch that is 0.6 mm anterior to the prostatic vesicle, a penis papilla that is shorter than the male atrium, a relatively small distal dilation of the ejaculatory duct, a female atrium that is 2.5 times longer than the male, and the presence of a long common glandular ovovitelline duct. [2]
The specific epithet is derived from the Tupi language word tui, "tiny, insignificant", in reference to the small size of the ejaculatory duct's distal dilation. [2]
The reproductive system of planarians is broadly similar among different families, although the associated structures can vary in complexity.
Cratera is a genus of land planarians found in South America.
Notogynaphallia is a genus of land planarians from South America.
Cratera nigrimarginata is a species of land planarian found in Brazil.
Cratera anamariae is a species of land planarian belonging to the subfamily Geoplaninae. It is known from specimens found in Serra dos Órgãos National Park, Brazil.
Cratera crioula is a species of land planarian belonging to the subfamily Geoplaninae. It is known from specimens found in Cantareira State Park, Brazil.
Cratera steffeni is a species of land planarian belonging to the subfamily Geoplaninae. It is found in Rio Grande do Sul, Brazil.
Cratera joia is a species of land planarian belonging to the subfamily Geoplaninae. It is known from specimens found in Serra do Mar State Park in Brazil.
Gigantea urubambensis is a species of land planarian belonging to the subfamily Geoplaninae. It is known from specimens collected in rainforests of the Lower Urubamba River valley in Peru.
Obama decidualis is a species of land planarian belonging to the subfamily Geoplaninae. It is found within Brazil.
Cratera hina is a species of land planarian belonging to the subfamily Geoplaninae. It is known from specimens found in the Paranapiacaba Conservation Units Mosaic in Brazil.
Cratera taxiarcha is a species of land planarian belonging to the subfamily Geoplaninae. It is known from specimens found in Albert Löfgren State Park and Cantareira State Park in Brazil.
Cratera picuia is a species of land planarian belonging to the subfamily Geoplaninae. It is known from specimens found in Saint-Hilaire/Lange National Park in Brazil.
Cratera arucuia is a species of land planarian belonging to the subfamily Geoplaninae. It is known from specimens found in Intervales State Park in Brazil.
Cratera assu is a species of land planarian belonging to the subfamily Geoplaninae. It is known from specimens found in Serra da Bocaina National Park in Brazil.
Cratera boja is a species of land planarian belonging to the subfamily Geoplaninae. It is known from specimens found in Serra da Bocaina National Park in Brazil.
Cratera imbiri is a species of land planarian belonging to the subfamily Geoplaninae. It is known from specimens found in Campos do Jordão State Park in Brazil.
Cratera paraitinga is a species of land planarian belonging to the subfamily Geoplaninae. It is known from specimens found in the Boracéia Biological Station in Brazil.
Geoplana paranapiacaba is a species of land planarian belonging to the subfamily Geoplaninae. It is known from specimens found in the Paranapiacaba district of Santo André, Brazil.
Issoca assanga is a species of land planarian belonging to the subfamily Geoplaninae. It is known from specimens found in Brazil.
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