Two New Species of Freshwater Planarian (Platyhelminthes, Tricladida, Dugesiidae, <i>Dugesia</i>) from Southern China Exhibit Unusual Karyotypes, with a Discussion on Reproduction in Aneuploid Species

<div><i>Dugesia musculosa</i>. Photomicrographs of transverse (a, b) and sagittal (c, d) sections. (a, b) Paratype ZMHNU-YFXHA8, showing asymmetrical openings of oviducts, well-developed circular muscles around common atrium and gonoduct, penis papilla, and ejaculatory duct. (c) Paratype ZMHNU-YFXHA9, showing large copulatory bursa. (d) Holotype ZMHNU-YFXHA4, showing bursal canal with thick coat of circular muscle. Scale bars: 100 <i>μ</i>m. Abbreviations: cm: circular muscles; mo: mouth; spv: spermiducal vesicle; for other abbreviations, see caption of Figure <a href="../fig9/">9</a>.</div>

Journal of Zoological Systematics and Evolutionary Research

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Figure 10

Figure 10: Two New Species of Freshwater Planarian (Platyhelminthes, Tricladida, Dugesiidae, <i>Dugesia</i>) from Southern China Exhibit Unusual Karyotypes, with a Discussion on Reproduction in Aneuploid Species 

Figure 10 | Two New Species of Freshwater Planarian (Platyhelminthes, Tricladida, Dugesiidae, Dugesia) from Southern China Exhibit Unusual Karyotypes, with a Discussion on Reproduction in Aneuploid Species 