Morphological description of two new ciliates (Ciliophora, Karyorelictea, Cryptopharyngidae): Apocryptopharynx discoidalis spec. nov. and Cryptopharynx minutus spec. nov.

  • Yuan Xu
  • , Xinpeng Fan
  • , Saleh A. Al-Farraj
  • , Xiaozhong Hu*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The karyorelictids, a highly specialized group of ciliates, mostly inhabit marine biotopes, and there is very little information about their diversity, taxonomy, and systematics. The present paper investigates two new cryptopharyngid ciliates, Apocryptopharynx discoidalis spec. nov. and Cryptopharynx minutus spec. nov., which were isolated from the intertidal zone of Diaosuyuan Beach in Qingdao, China. Apocryptopharynx discoidalis spec. nov. can be distinguished from related species by its oval discoid body shape and highly structured epipellicular scales covering the left lateral surface. Cryptopharynx minutus spec. nov. can be recognized by its small body length (30–50 μm), seven to 15 dikinetids in intrabuccal kinety, and two to five macronuclei. Based on our comparison, we believe that Cryptopharynx sp. 1 described by Foissner in 1996 represents a population of C. minutus spec. nov.

Original languageEnglish
Pages (from-to)77-86
Number of pages10
JournalEuropean Journal of Protistology
Volume58
DOIs
StatePublished - 1 Apr 2017

Keywords

  • Cryptopharyngidae
  • Epipellicular scales
  • Karyorelictea
  • New species
  • Taxonomy

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