Keysercythere enricoi Karanovic and Brandao , 2015

Tanaka, Hayato, Yoo, Hyunsu, Pham, Huyen Thi Minh & Karanovic, Ivana, 2021, Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae, Arthropod Systematics & amp; Phylogeny 79, pp. 171-188 : 171

Keysercythere enricoi Karanovic and Brandao, 2015 Fig. 2

Material examined.

Four specimens dissected, valves preserved in one cardboard cell slide ( SMF 57049 -57052). Seventy-five specimens undissected, stored in one vial filled with 80% ethanol. All specimens were collected from the sampling station SO250_9 of KuramBio II expedition (RV Sonne, 250th Expedition), trawled from 43°48.43'N, 151°44.35'E, 5134 m to 43°47.64'N 151°44.51'E, 5101 m by AGT on 19th August, 2016 .

Distribution.

This species has been found from the abyssal plain of Northwestern Pacific, ranging from 39°43.47ʹN, 147°10.11ʹE, 5229 m to 39°42.54ʹN, 147°9.51ʹE, 5217 m ( Karanovic and Brandão 2015). This study is the second record of Keysercythere enricoi , and it is collected from sunken natural wood pieces on deep-sea in the same way as previous report ( Karanovic and Brandão 2015). Because we found this species approximately 600 km to the southwest from the type locality, it must be widely distributed in this area, and its distribution can be associated with natural wood falls scattered on the deep-sea floor.

DNA sequence.

The 18S rDNA sequence of two specimens were obtained. GenBank accession numbers are MW338924 (1704 bp) and MW338925 (1256 bp).

Figures

Figure 2. Scanning electron microscope images of valves of Keysercythere enricoi. A RV, external lateral view B LV, external lateral view C LV, internal lateral view D RV, internal lateral view. Scale bar: 200 μm.