Psychropotes verrucicaudatus Xiao, Gong, Kou, Li, 2019
publication ID |
https://dx.doi.org/10.3897/zookeys.1113.82172 |
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https://treatment.plazi.org/id/DE7D0BEC-D4C3-5592-965D-E11F0D130D35 |
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Psychropotes verrucicaudatus Xiao, Gong, Kou, Li, 2019 |
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Psychropotes verrucicaudatus Xiao, Gong, Kou, Li, 2019 View in CoL
Fig. 42 View Figure 42
Material.
Clarion-Clipperton Zone • 1 specimen; APEI 4; 6.9878°N, 149.9119°W; 4999 m deep; 02 Jun. 2018; Smith & Durden leg.; GenBank: ON400703 View Materials (COI); NHMUK 2021.19; Voucher code: CCZ_086 GoogleMaps .
Description.
Single specimen, colouration in situ is violet (Fig. 42A, B View Figure 42 ). Body elongated and anteriorly depressed (L = 34.7 cm, W = 10.2 mm); with a broad brim. Short (approx. one twelfth of body length), conical, single-pointed, dorsal unpaired appendage, placed 2/5 of the body length from the posterior end (Fig. 42A-C View Figure 42 ). Dorsal skin, including the dorsal appendage, covered in warts (Fig. 42C, F View Figure 42 ). Each wart has an ossicle in the centre, a giant cross with a central apophysis and strongly curved arms, all visible through the skin (Fig. 42E, F View Figure 42 ). Dorsal skin also contains smaller crosses with spiny arms (Fig. 42E, F View Figure 42 ). Approximately 30 pairs of mid-ventral tube feet arranged in two rows along the mid-ventral ambulacrum, arranged very close together on the anterior two thirds of the body, and scattered after posteriorly, with the last pairs being very close together again. Colouration of preserved specimen is also purple, with slightly lighter ventrum.
Remarks.
COI sequence is very similar (K2P distance = 0.77%) to the holotype of P. verrucicaudatus , and they were recovered together in the phylogenetic tree (Fig. 34 View Figure 34 ). This species was described from the Jiaolong seamount, in the South China Sea, western Pacific Ocean at 3615 m deep ( Xiao et al. 2019). External morphological characters are in accordance with the original description.
Ecology.
The specimen was found on the sedimented abyssal plain in APEI 4 at 4999 m depth.
Comparison with image-based catalogue.
A very similar Psychropotes sp. morphotype (i.e., Psychropotes verrucicaudatus sp. inc., HOL_045) has been commonly encountered in seabed image surveys conducted across nodule fields areas of the eastern CCZ (e.g., Amon et al. 2017b), but not in the abyssal areas surveyed within the Kiribati EEZ.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Aphroditiformia |
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