Dendrocoelidae is a
family of freshwater
tricladida flatworms that has a
holarctic distribution.
The largest freshwater triclad known belongs to this family, it's up to 40 cm in length and inhabits the
Lake Baikal
Lake Baikal (, russian: Oзеро Байкал, Ozero Baykal ); mn, Байгал нуур, Baigal nuur) is a rift lake in Russia. It is situated in southern Siberia, between the federal subjects of Irkutsk Oblast to the northwest and the Repu ...
.
Description
The family Dendrocoelidae is characterized by an unusual arrangement of the muscle layers of the pharynx. While in most planarians the inner musculature of the pharynx is composed of two muscle layers, one circular and one longitudinal, in Dendrocoelidae the circular and longitudinal fibers are intermingled, forming a mixed layer.
Dendrocoelidae is the sister group of
Kenkiidae
Kenkiidae is a family of freshwater triclads. Their species can be found sporadically in caves, groundwater, and deep lakes in Central Asia, Far East and North America.Ball, I. R.: A contribution to the phylogeny and biogeography of the freshwa ...
. Both families have an anterior adhesive organ, which is considered a
synapomorphy of the group.
Genera
The following genera are recognised in the family Dendrocoelidae:
*Genus ''
Acromyadenium''
*Genus ''
Alaoplana
Dendrocoelidae is a family (biology), family of freshwater tricladida flatworms that has a holarctic distribution.
The largest freshwater triclad known belongs to this family, it's up to 40 cm in length and inhabits the Lake Baikal.
Descr ...
''
*Genus ''
Amyadenium''
*Genus ''
Anocelis''
*Genus ''
Archicotylus''
*Genus ''
Armilla''
*Genus ''
Atria''
*Genus ''
Baikalobia''
*Genus ''
Baikalocotylus''
*Genus ''
Baikaloplana''
*Genus ''
Bdellocephala
''Bdellocephala'' is a genus of freshwater triclad that inhabits different regions of Eurasia.Kawakatsu, M., Sluys R., Timoshkin O. A., Naumova T. V., Nishino M., & Takai M. (2001). Redescription of Japanese Bdellocephala annandalei from Lake Bi ...
''
*Genus ''
Caspioplana''
*Genus ''
Dendrocoelopsis''
*Genus ''
Dendrocoelum
''Dendrocoelum'' is a genus of freshwater triclad
A planarian is one of the many flatworms of the traditional class (biology), class Turbellaria. It usually describes free-living flatworms of the order Tricladida (triclads), although this ...
''
*Genus ''
Hyperbulbina''
*Genus ''
Hyperpapillina''
*Genus ''
Microarchicotylus''
*Genus ''
Miodendrocoelum''
*Genus ''
Papilloplana''
*Genus ''
Polycladodes''
*Genus ''
Procotyla
''Procotyla'' is a genus of freshwater triclad. Species of ''Procotyla'' are known from North America and Russia.
Conservation
''Procotyla typhlops'' is an endangered species in Maryland
Maryland ( ) is a state in the Mid-Atlantic re ...
''
*Genus ''
Protocotylus''
*Genus ''
Rimacephalus''
*Genus ''
Sorocelis''
Phylogeny
Phylogenetic supertree after Sluys et al., 2009:
References
{{Taxonbar, from=Q3022353
Platyhelminthes families