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A new species of Polycelis (Platyhelminthes, Tricladida, Planariidae) from China
In this paper, a new species of Polycelis of the family
Planariidae from China is described. Mature individuals have
80β140 eyespots; the testes are well-developed and most of
them occupy the entire dorso-ventral space; the penis is a
long cone with well-developed musculature; the boundary
between the penis bulb and penis papilla is vague and the
bulbar cavity is not observed; the bursal canal is surrounded
by a well-developed coat of circular muscles, and a thin
layer of longitudinal muscles. The karyotype shows a diploid
complement of 38 chromosomes, with the formula 2n = 38 = 24m
+ 14sm
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