Diorchis

	Diorchis ''Diorchis'' is a genus of flatworms belonging to the family Hymenolepididae. The genus has cosmopolitan distribution In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the world in appropriate habitats. Such a taxon, usually a species, is said to exhibit cosmopolitanism or cosmopolitism. The ext .... Species: ''Diorchis acuminatus'' ''Diorchis americanus'' ''Diorchis brevis'' ''Diorchis bulbodes'' ''Diorchis danutae'' ''Diorchis diorchis'' ''Diorchis donis'' ''Diorchis endacantha'' ''Diorchis flavescens'' ''Diorchis formosensis'' ''Diorchis inflata'' ''Diorchis longicirrosa'' ''Diorchis longiovum'' ''Diorchis markewitschi'' ''Diorchis nitidohamulus'' ''Diorchis ovofurcata'' ''Diorchis paranansomi'' ''Diorchis parvogenitalis'' ''Diorchis ransomi'' ''Diorchis sobolevi'' ''Diorchis spasskajae'' ''Diorchis spinata'' ''Diorchis stefanskii'' ''Diorchis tuvensis'' ' ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]
	Hymenolepididae __NOTOC__ The Hymenolepididae are family of cyclophyllid tapeworms. Their characteristic feature is the small number of testes (one to four). The unilateral genital pores and large external seminal vesicle allow for easy recognition. Most species are small, transparent, and easy to study. The family contains over 90 genera with over 900 species, having as their definitive host birds (c. 700 species) or mammals (about 250 species). Most reside in the intestines of their definitive hosts. The majority of species with known lifecycles have arthropods as intermediate hosts. As human parasites The family Hymenolepididae has only two species which infects humans: the disease hymenolepiasis is caused by ''Hymenolepis nana'' and '' H. diminuta'', which are sometimes classified in the genus ''Rodentolepis''. Most cases of hymenolepiasis are caused by ''H. nana''. It occurs worldwide, but in temperate climates, children and people living in institutions are more likely to be infected. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Flatworms The flatworms, flat worms, Platyhelminthes, or platyhelminths (from the Greek πλατύ, ''platy'', meaning "flat" and ἕλμινς (root: ἑλμινθ-), ''helminth-'', meaning "worm") are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates. Unlike other bilaterians, they are acoelomates (having no body cavity), and have no specialized circulatory and respiratory organs, which restricts them to having flattened shapes that allow oxygen and nutrients to pass through their bodies by diffusion. The digestive cavity has only one opening for both ingestion (intake of nutrients) and egestion (removal of undigested wastes); as a result, the food cannot be processed continuously. In traditional medicinal texts, Platyhelminthes are divided into Turbellaria, which are mostly non-parasitic animals such as planarians, and three entirely parasitic groups: Cestoda, Trematoda and Monogenea; however, since the turbellarians have since been proven not to be mono ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Cosmopolitan Distribution In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the world in appropriate habitats. Such a taxon, usually a species, is said to exhibit cosmopolitanism or cosmopolitism. The extreme opposite of a cosmopolitan species is an endemic one, being found only in a single geographical location. Qualification The caveat “in appropriate habitat” is used to qualify the term "cosmopolitan distribution", excluding in most instances polar regions, extreme altitudes, oceans, deserts, or small, isolated islands. For example, the housefly is highly cosmopolitan, yet is neither oceanic nor polar in its distribution. Related terms and concepts The term pandemism also is in use, but not all authors are consistent in the sense in which they use the term; some speak of pandemism mainly in referring to diseases and pandemics, and some as a term intermediate between endemism and cosmopolitanism, in effect regarding pandemism as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]