''Marionfyfea adventor'' is a species of land planarian described in 2016 from specimens found in the United Kingdom, the Netherlands and France. However, since the species belongs to the genus ''

Marionfyfea ''Marionfyfea'' is a genus of land planarians from Antarctic Islands off New Zealand. However, a species has been described from specimens found in Europe, probably introduced. Description The genus ''Maryonfyfea'' includes land planarians of ...

'', of which the species are known only from subantarctic islands off New Zealand,Winsor, L. (2006). New and revised terrestrial flatworm taxa (Platyhelminthes: Tricladida: Terricola) of Australia and the Subantarctic Islands of New Zealand. Tuhinga: Records of the Museum of New Zealand Te Papa Tongarewa, 17, 81-104
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Winsor, L. (2011). Some terrestrial flatworm taxa (Platyhelminthes: Tricladida: Continenticola) of the Subantarctic Islands of New Zealand. Tuhinga: Records of the Museum of New Zealand Te Papa Tongarewa, 22, 161-169
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it is probably an introduced species in Europe.

Description

''Marionfyfea adventor'' is a relatively small species of land planarian, being about 1 cm long by 1 mm wide; when contracted, the body is plump, about 5 mm long and 1.5 mm wide. The dorsal and lateral surfaces are irregularly patchy light and dark brown colour with small

iridescent Iridescence (also known as goniochromism) is the phenomenon of certain surfaces that appear to gradually change color as the angle of view or the angle of illumination changes. Examples of iridescence include soap bubbles, feathers, butterfl ...

blue spots. The creeping sole is uniform paler brown and about 40% of body width. There are 70-80 eyes in total.

Distribution

''Marionfyfea adventor'' has been recorded in widely scattered localities in the United Kingdom, Netherlands, France, Germany, Denmark and Ireland. More recently, it has also been found in Belgium.

Introduced species

Hugh Jones and Ronald Sluys (2016) wrote: "It is probable that ''M. adventor'' originates from one of the subantarctic islands or main islands of New Zealand. The most likely means of introduction to Europe is the international horticultural trade. Its widely scattered distribution suggests that it may have been in Europe for some considerable time."

References

{{Taxonbar, from=Q26265834 Geoplanidae Worms of New Zealand