Figures 1f, 4f, 22
Pleustes euacanthus G. Sars, 1877: 356.
Paramphithoe euacantha (G. Sars, 1877) —Sars 1885: 168, Pl. 14, fig. 3, 3a–3b.—Sars 1886: 52.
Paramphithoe pulchella (Krøyer, 1846) (part)— Hansen 1887: 119–121.— Hilgendorf & Vosseler 1895: 879.—Holmes 1904: 489.— Nordgaard 1905: 184.— Norman 1895: 487.— Norman 1902: 81.— Sars 1895: 346–348.— Stephensen 1913: 160.
Parapleustes pulchellus f. euacanthus (G. Sars, 1877) (part)— Stephensen 1944: 4.– Shoemaker 1955: 43.
Acanthozone panopla (Kroyer, 1838) (part)— Della Valle 1893: 605–607,.
Neopleustes pulchellus (Krøyer, 1846) (part)— Stebbing 1906: 312.— Barnard & Karaman 1991: 649.— Hendrycks & Bousfield 2004: 94.— Stephensen 1928: 247, fig. 51.— Wildish & Dadswell 1985: 15.
Neopleustes pulchellus euacanthus (G. Sars, 1877) — Stappers 1911: 45–46.— Gurjanova 1951: 644, fig. 440.— Wesławski 1990: 507.
Distribution: Arctic Ocean: Greenland Sea, Norwegian Sea, Barents Sea and Kara Sea in depth range of 2–830 m on mud (Gurjanova 1951; G. Sars 1877, 1885, 1886; Stappers 1911; Wesławski 1990).
Remarks. According to the formula of dorsal carination, it is close to N. euacanthoides. It differs from the latter in the form of coxal plates 1 and 2. Сoxal plates in N. euacanthus are rounded at the lower edge, and these are narrowly pointed in N. euacanthoides.