Diphascon wuyingensis, Sun & Zhang & Wang & Zhao & Luo, 2020

Sun, Xue-Ling, Zhang, Jing-Yu, Wang, Ning, Zhao, Min & Luo, Xue-Gang, 2020, A new species of Diphascon (Tardigrada: Hypsibiidae) from Northern China supported by integrated taxonomy, Zootaxa 4722 (2), pp. 185-194 : 187-188

publication ID

https://doi.org/ 10.11646/zootaxa.4722.2.5

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scientific name

Diphascon wuyingensis

sp. nov.

Diphascon wuyingensis View in CoL sp. nov.

( Table 1 View TABLE 1 , Figures 1–3 View FIGURE 1 View FIGURE 2 View FIGURE 3 )

Description of the new species

Animals (measurements and statistics in Table 2 View TABLE 2 )

Body colourless and slender. Eyes absent (in live specimens) and the cuticle was smooth. Oral cavity armature not visible under PCM. Buccopharyngeal apparatus of the Diphascon type. Apophyses for the insertion of the stylet muscles hook-shaped. The buccopharyngeal tube with a drop-shaped formation on the buccal/pharyngeal tube boundary ( Fig. 1B View FIGURE 1 ). Muscle pharynx ovoid, with small pharyngeal apophyses and three macroplacoids in the shape of slender rods of increasing length from first to third, with the second clearly longer than the first (macroplacoid length sequence: 1<2<3; Table 2 View TABLE 2 ). Microplacoid and septulum absent ( Fig. 1 View FIGURE 1 A–C).

Claws of the Hypsibius type, small, without sutures or light-refracting units and pseudolunulae ( Fig. 2 View FIGURE 2 ), but with accessory points on primary branches ( Fig. 3D View FIGURE 3 ). Cuticular bars under claws absent.

Eggs: Not found.

DNA sequences

The 18S rRNA marker was sequenced for both individual and pooled tardigrades, but COI was successfully sequenced only from one individual tardigrade. All 18S rRNA sequences represented a single haplotype ( MK387067 View Materials ) and the sequence was 1716 bp long whereas the COI sequence ( MK392633 View Materials ) was 658 bp long (the sequences are also provided in the Appendix 1).

Type locality. 48º07.25’N, 129º11.19’E; 331 m asl: China, Heilongjiang Province, Wuying district of Yichun ; habitat: shady urban park; substrate: mosses on a fallen log. GoogleMaps

Etymology. The new species is named after the Wuying district of Yichun, China, where it was discovered.

Type depositories. The holotype (IAE036451) and one paratype (IAE036452) are deposited at the Herbarium of Institute of Applied Ecology, CAS, Shenyang. Four paratypes (NMS0001–4) are deposited at the Microbiological Lab, College of Life Sciences, Northeast Forestry University, Harbin.

TABLE 1. Sequences used for genetic comparisons of Diphascon wuyingensis sp. nov.

DNA marker Species Accession number Source
18S rRNA Diphascon higginsi HQ60432 Bertolani et al. (2014)
  Diphascon pingue HQ604937 View Materials Bertolani et al. (2014)
  Diphascon puniceum EU266949 View Materials Sands et al. (2008)
COI Diphascon higginsi KU513417 View Materials Kosztyła et al. (2016)
  Diphascon pingue FJ435793 View Materials Guil & Giribet (2011)
  Diphascon puniceum KP013600 View Materials Velasco-Castrillon et al. (2016)













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