A new species of Polycelis (Platyhelminthes, Tricladida, Planariidae) from China

Dong, Zi-Mei and Chen, Guang-Wen and Zhang, He-Cai and Liu, De-Zeng (2017) A new species of Polycelis (Platyhelminthes, Tricladida, Planariidae) from China. ACTA ZOOLOGICA ACADEMIAE SCIENTIARUM HUNGARICAE, 63 (3). pp. 263-276. ISSN 1217-8837

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Abstract

In this paper, a new species of Polycelis of the family Planariidae from China is described. Mature individuals have 80–140 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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