Turbellarian taxonomic database

Abstract / Notes

Two new Archilopsis species are described: Archilopsis marifuga sp.n. and Archilopsis arenaria sp.n.;
Archilopsis unipunctata (Fabricius, 1826) and Archilopsis spinosa (Jensen, 1878) are redescribed. The latter
taxon is re-established. The descriptions are based on morphological and karyological data. The four species
of the genus can unequivocally be recognized by the morphology of the cirrus and the presence or absence of a
stylet. The genus Archilopsis is regarded as a monophyletic group with at least two autapomorphies. The
relationship between the four species is discussed and a cladogram for the genus proposed. The existence of
two sistertaxa (each with two species) is recognized.

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