Marine flatworms (Platyhelminthes images)

Marine Polyclad Flatworms

Polycladida (Order) > Acotylea (Suborder) > Leptoplanoidea (Superfamily) > Leptoplanidae (Family)

Leptoplana
Leptoplana tremellaris (Müller OF, 1773)
- A leptoplanid polyclad turbellarian
Leptoplana tremellaris (Müller OF, 1773) ?
- A leptoplanid polyclad turbellarian

Polycladida (Order) > Acotylea (Suborder) > Leptoplanoidea (Superfamily) > Pleioplanidae (Family)

Pleioplana
Pleioplana atomata (Müller OF, 1776) ?
- A pleioplanid polyclad turbellarian

Polycladida (Order) > Acotylea (Suborder) > Leptoplanoidea (Superfamily) > Stylochoplanidae (Family)

Comoplana ?
Comoplana agilis (Lang, 1884) - A Marine Flatworm
Comoplana ? sp. 1 - A Marine Flatworm
Both the above found with Stylochoplana maculata, it is possible that the turbellarians above may be varients of this species. An expert opinion is needed.

Stylochoplana
Stylochoplana maculata (Quatrefage, 1845)
- A marine flatworm

Polycladida (Order) > Cotylea (Suborder) > Euryleptoidea (Superfamily) > Euryleptidae (Family)

Cycloporus
Cycloporus papillosus (Sars, 1878)
- A euryleptid polyclad turbellarian

Eurylepta
Eurylepta cornuta (Müller OF, 1776)
- A euryleptid polyclad turbellarian

Oligocladus
Oligocladus sanguinolentus Lang, 1884
- A euryleptid polyclad turbellarian

Prostheceraeus
Prostheceraeus vittatus (Montagu, 1815)
- Banded or Candy-striped flatworm

Stylostomum
Stylostomum ellipse (Dalyell, 1853)
- A euryleptid polyclad turbellarian

Polycladida (Order) > Cotylea (Suborder) > Euryleptoidea (Superfamily) > Prosthiostomidae (Family)

Prosthiostomum
Prosthiostomum siphunculus (Delle Chiaje, 1822)
- A marine flatworm

Triclad Flatworms (Tricladida)

Tricladida (Order) > Maricola (Infraorder) > Cercyroidea (Superfamily) > Cercyridae (Family) > Cercyrini (Subfamily)

Sabussowia
Sabussowia dioica (Claparède, 1863)
- A marine triclad flatworm

Tricladida (Order) > Maricola (Infraorder) > Procerodoidea (Superfamily) > Procerodidae (Family)

Procerodes
Procerodes littoralis (Ström, 1768)
- A marine triclad flatworm

Parasitic Flatworms

Monogenea (Class) > Polyopisthocotylea (Subclass) > Mazocraeidea (Order) > Mazocraeidae (Family)

Kuhnia
Kuhnia scombri (Kuhn, 1829) Sproston, 1945
- A monogenean gill parasite of Atlantic Mackerel,
Scomber scombrus.

Rhabditophora (Class) > Eulecithophora (Infraclass) > Revertospermata (Superorder) > Fecampiida (Order) > Fecampiidae (Family)

Fecampia
Fecampia erythrocephala Giard, 1886
- Parasitic crab flatworm (cocoons)
Fecampia erythrocephala Giard, 1886 ?
- Parasitic crab flatworm in adult Palaemon prawn hosts
Fecampia erythrocephala Giard, 1886 ?
- Parasitic crab flatworm in an ampithoid amphipod host

Trematoda (Class) > Digenea (Subclass) > Plagiorchiida (Order) > Lepocreadiata (Suborder) > Lepocreadioidea (Superfamily) > Lepocreadiidae (Family)

Opechona
Possibly a species of Opechona - A parasitic trematode that includes the hydroid Leuckartiara octona as a host in its complex multi-host life cycle.

Platyhelminthes (Phylum) > Neodermata (Subphylum) > Trematoda (Class) > Digenea (Subclass)

The encysted metacercaria stage of a trematode digenean parasite on the fish, Cyclopterus lumpus, the Lumpsucker; Opechona bacillaris (Molin, 1859) Dollfus, 1927 ?

Probable new species of parasitic turbellarian on
the opisthobranch mollusc Runcina coronata

Other Flatworms

Xenacoelomorpha (Phylum) > Acoelomorpha (Subphylum) > Acoela (Order) > Convolutidae (Family)

Convoluta
Convoluta convoluta (Abildgaard, 1806)
- An acoela flatworm (specimen 1)
Convoluta convoluta (Abildgaard, 1806)
- An acoela flatworm (specimen 2)
Specimen two likely to be older than specimen one due to the presence of white markings on the body.

Symsagittifera
Symsagittifera schultzei (Schmidt, 1852)
- A green convolutid flatworm
Symsagittifera sp.? - A green convolutid flatworm
Carnsew Pool, Hayle, Cornwall, 24.05.17.

Rhabditophora (Class) > Eulecithophora (Infraclass) > Prolecithophora (Order) > Plagiostomidae (Family)

Plagiostomum
Plagiostomum sulphureum Graff, 1882 ?
- A plagiostomid flatworm
Plagiostomum vittatum (Frey & Leuckart, 1847)
- A plagiostomid flatworm

Vorticeros
Vorticeros auriculatum (Müller OF, 1784)
- A plagiostomid flatworm
Vorticeros luteum Hallez, 1879
- A plagiostomid flatworm

Unidentified Prolecithophora
On Bladder Wrack from Mousehole, Cornwall. 13.08.16.
Unidentified or new prolecithophoran - White with orange
stripe similar looking to the mollusc genus Rhodope

Rhabditophora (Class) > Eulecithophora (Infraclass) > Rhabdocoela (Order) > Typhloplanoida (Suborder) > Trigonostomidae (Family) > Paramesostominae (Subfamily)

Astrotorhynchus
Astrotorhynchus bifidus (McIntosh, 1874)
- A trigonostomid flatworm

Rhabditophora (Class) > Trepaxonemata (Subclass) > Neoophora (Infraclass) > Eulecithophora (Infraclass) > Rhabdocoela (Order) > Kalyptorhynchia (Suborder) > Eukalyptorhynchia (Infraorder) > Polycystididae (Family) > Polycystidinae (Subfamily)

Polycystis
Polycystis naegelii Kölliker, 1845 ? - A marine flatworm

Rhabditophora (Class) > Trepaxonemata (Subclass) > Neoophora (Infraclass) > Proseriata (Order) > Lithophora (Infraorder) > Monocelididae (Family) > Monocelidinae (Subfamily)

Monocelis
Monocelis lineata (Müller OF, 1773) - A marine flatworm

Marine flatworms are notoriously difficult to identify, many needing to be dissected and microscopically examined. The date and habitat where the flatworm was found is also very important information when identifying them; e.g. some may be more frequently on the middleshore close to mussel colonies, others in less saline situations.

Freshwater Flatworms

Tricladida (Order) > Continenticola (Suborder) > Planarioidea (Superfamily) > Planariidae (Family)

Polycelis
Polycelis felina (Dalyell, 1814) - A freshwater flatworm

APHOTOMARINE

An educational resource dedicated mainly to the photography
and diversity of marine life that can be found in coastal waters
and intertidal areas of Great Britain and Ireland by David Fenwick.

APHOTOMARINE

An educational resource dedicated mainly to the photography and diversity of marine life that can be found in coastal waters and intertidal areas of Great Britain and Ireland by David Fenwick.

An educational resource dedicated mainly to the photography
and diversity of marine life that can be found in coastal waters
and intertidal areas of Great Britain and Ireland by David Fenwick.