| Caenoplana | |
|---|---|
 | |
| Caenoplana coerulea | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Platyhelminthes |
| Order: | Tricladida |
| Family: | Geoplanidae |
| Tribe: | Caenoplanini |
| Genus: | Caenoplana Moseley, 1877 |
| Type species | |
| Caenoplana coerulea Moseley, 1877 | |
| Synonyms | |
| |
Caenoplana is a genus of land planarians from Australia and New Zealand.
The genus Caenoplana is characterized by having an elongate, cylindrical to sub-cylindrical body. The eyes are arranged along the body margins, crowded irregularly at the sides of the anterior end and extending in a single row to the posterior end. The copulatory apparatus lacks a permanent penis, i. e., the penis is formed during copulation by folds in the male cavity. The female cavity is irregular and narrow and the ovovitelline ducts join each other behind it, entering it ventrally. [1]
The following species are recognised in the genus Caenoplana:
Geoplanidae is a family of flatworms known commonly as land planarians or land flatworms.
Bipalium is a genus of large predatory land planarians. They are often loosely called "hammerhead worms" or "broadhead planarians" because of the distinctive shape of their head region. Land planarians are unique in that they possess a "creeping sole", a highly ciliated region on the ventral epidermis that helps them to creep over the substrate. Native to Asia, several species are invasive to the United States, Canada, and Europe. Some studies have begun the investigation of the evolutionary ecology of these invasive planarians.
Girardia is a genus of freshwater planarians belonging to the family Dugesiidae.
Microplana is a genus of land planarians found in Europe and Africa.
Geoplaninae is a subfamily of land planarians endemic to the Neotropical region. Members of this family are sometimes referred to as the Neotropical land planarians. However, one species, Obama nungara has been introduced in Europe.
Luteostriata is a genus of land planarians from Brazil characterized by a yellow body with dark longitudinal stripes.
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.
Bipaliinae is a subfamily of land planarians found mainly in Madagascar, the Indian subcontinent and Southeast Asia, although some species have been introduced worldwide.
Choeradoplana is a genus of land planarians found in South America.
Paraba is a genus of land planarians from South America.
Imbira is a genus of land planarians found in South America.
Cratera is a genus of land planarians found in South America.
Pasipha is a genus of land planarians from South America.
Obama nungara is a species of land planarian in the family Geoplanidae. It is native to South America, but has been introduced in Europe.
Kontikia is a genus of land planarians native from islands in the Indo-Pacific region, but several species have been introduced elsewhere.
Fletchamia is a genus of land planarians from Australia.
Lenkunya is a genus of land planarians from Australia.
Humbertium is a genus of land planarians of the subfamily Bipaliinae.
Australopacifica is a genus of land planarians of the tribe Caenoplanini. It was erected to include species lacking sufficient morphological information to allow them to be classified in the appropriate genus.
