Rhynchodemus
Rhynchodemus is a genus of land planarians in the tribe Rhynchodemini.
Description
Species of the genus Rhynchodemus are characterized by an elongate body that is attenuated at both ends, oval or round in cross section. The creeping sole occupies most of the ventral surface and the anterior end has two large eyes. The copulatory apparatus has a large chamber with folded epithelium in the male atrium, without a penis papilla.
Species
The genus Rhynchodemus includes the following species:Rhynchodemus americanus Hyman, 1943Rhynchodemus angustus Rhynchodemus aripensis Prudhoe, 1949Rhynchodemus blainvillei von Graff, 1899Rhynchodemus bromelicola de Beauchamp, 1912Rhynchodemus costaricensis de Beauchamp, 1913Rhynchodemus flavus Moseley, 1877Rhynchodemus fuscus Moseley, 1877Rhynchodemus graetzi du Bois-Reymond Marcus, 1953Rhynchodemus hectori von Graff, 1897Rhynchodemus ijimai Kaburaki, 1922Rhynchodemus inopinatus Rhynchodemus marfa Marcus, 1953Rhynchodemus misus du Bois-Reymond Marcus, 1965Rhynchodemus nematopsis Rhynchodemus oahuensis Hyman, 1939Rhynchodemus ochroleucus von Graff, 1899Rhynchodemus palnisius de Beauchamp, 1930Rhynchodemus piptus Marcus, 1952Rhynchodemus samperi Furhmann, 1912Rhynchodemus schmardai von Graff, 1899Rhynchodemus schubarti du Bois-Reymond Marcus, 1955Rhynchodemus scius du Bois-Reymond Marcus, 1955Rhynchodemus sumbawaeiensis Rhynchodemus sylvaticus Rhynchodemus vejdovskyi von Graff, 1899
The mitochondrial genome of Rhynchodemus sylvaticus was described in 2025. It is 16,891 bp long and contains 12 protein-coding genes, two rRNA genes and 21 tRNA genes; no tRNA-Thr was found. In contrast to the other eight species of Rhynchodeminae with sequenced mitogenomes, there is a real stop codon for ND5. In a phylogeny based on proteins from the mitogenome, R. sylvaticus is within a clade including other species of the tribe Rhynchodemini from Oceania, but is distinguished by a long branch.