First description of collar receptors in Temnocephalidae (Platyhelminthes)

摘要: Two species of Temnocephala (Platyhelminthes, Temnocephalida, Temnocephalidae), namely iheringi and haswelli, have collar receptors in the epidermis tentacles general body surface, but not sucker region. These were seen associated with clusters 20–22 monociliary receptors. All found these temnocephalids bore six stereocilia. Other neoophoran platyhelminths a constant number eight stereocilia per receptor, only exception being members another family Didymorchidae, where receptor cells five been recorded. Therefore, presence lower is likely to be an apomorphic trait Temnocephalida.