| Kawakatsua | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Platyhelminthes |
| Order: | Tricladida |
| Family: | Dimarcusidae |
| Genus: | Kawakatsua Sluys, 2019 |
| Species: | K. pumila |
| Binomial name | |
| Kawakatsua pumila Sluys, 2019 | |
Kawakatsua is a genus of triclad belonging to the family Dimarcusidae. It is monotypic, containing the sole species Kawakatsua pumila. [1] It is known from type specimens found on Barro Colorado Island. [2]
The generic name was given in honor of Masaharu Kawakatsu, for his contributions to planarian systematics. The specific epithet is derived from the Latin pumilis, "dwarfish, little", in reference to the species' small size.
Kawakatsua pumila ranges from 2.4 to 2.55 mm in length. It's a white color, and lacks eyes. Its front end is rounded and broad, while its back end is wide and pointed.
Ronald Sluys described the dorsal and ventral epidermis as being "packed with rhabdites." Its adhesive glands secrete directly through the epidermis. It lacks adhesive papillae. The front intestinal trunk extends up to the brain. The pharynx is in the body's lower half. The opening of its mouth is in the pharyngeal pocket. The entire copulatory apparatus is in the body's lower half, at the far tail end. Its testes are distributed irregularly. The ovaries are around 100 to 200 μm behind the brain. The vasa deferentia form vesicles filled with sperm. At the root of the penis papilla, the sperm ducts form a loop and unite to form the ejaculatory duct. The penis papilla is shaped like a cone and lacks a penis bulb.
Dugesia sicula is a species of dugesiid triclad that lives in freshwater bodies of the Mediterranean Basin, where it is widely distributed. It has been reported from Sicily, Elba and Mallorca, Eivissa, Sardinia, Algeria, Tunisia, Morocco and Crete.
Dimarcusidae is a family of triclads found mostly in freshwater habitats of caves, although at least one species, Rhodax evelinae, occurs in surface waters. Currently the family contains only seven species distributed in five genera, although the total number of species is thought to be much higher.
Bdellocephala is a genus of freshwater triclad that inhabits different regions of Eurasia.
Obama is a genus of land planarians from South America. It contains several species adapted to human-disturbed environments, including the only invasive land planarian native to the Neotropical realm, Obama nungara, which has been accidentally introduced in Europe.
The reproductive system of planarians is broadly similar among different families, although the associated structures can vary in complexity.
Amaga is a genus of land planarians from South America.
Novibipalium is a genus of land planarians of the subfamily Bipaliinae.
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 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.
Microplana robusta is a species of land planarian belonging to the subfamily Microplaninae. It is found in Spain.
Argaplana is a genus of land planarians, the only member of the tribe Argaplanini in the family Rhynchodeminae. It contains the sole species Argaplana ranuii. It is native to New Zealand.
Choeradoplana abaiba is a species of land planarian belonging to the subfamily Geoplaninae. It is known from specimens found in Serra do Tabuleiro State Park in Brazil.
Choeradoplana longivesicula is a species of land planarian belonging to the subfamily Geoplaninae. It is known from specimens found in General Carneiro, Brazil.
Choeradoplana cyanoatria is a species of land planarian belonging to the subfamily Geoplaninae. It is known from specimens found in General Carneiro, 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 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.
Geoplana iporanga is a species of land planarian belonging to the subfamily Geoplaninae. It is found in areas of the Atlantic Forest within Intervales State Park in Brazil.
Obama apiguara is a species of land planarian belonging to the subfamily Geoplaninae. It is found within Brazil.
 | This flatworm- (or platyhelminth-) related article is a stub. You can help Wikipedia by expanding it. |