Neopleustes euacanthus (G. Sars, 1877 )

Labay, Vjacheslav S., 2021, Review of amphipods of the family Pleustidae Buchholz, 1874 (Crustacea Amphipoda) from the coastal waters of Sakhalin Island (Far East of Russia). I. Subfamily Neopleustinae Bousfield & Hendrycks, 1994, Zootaxa 4974 (2), pp. 267-306 : 295-296

Neopleustes euacanthus (G. Sars, 1877)

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 .

Figures

FIGURE 1. Neopleustinae Bousfield & Hendrycks, 1994, lateral view: a—Neopleustes boecki boecki (Hansen, 1888) (from Sars 1895: pl. 122), b—N. boecki pacifica ssp. nov., c—N. carinatus Margulis, 1963 (original image by author), d—N. columbianus Hendrycks & Bousfield, 2004 (from Hendrycks & Bousfield 2004: fig. 27), e—N. euacanthoides Gurjanova, 1972 (modified from Gurjanova 1972: fig. 18), f—N. euacanthus (G. Sars, 1876) (modified from Sars 1885: Pl. 14), g—N. kussakini (Budnikova, 1995) (modified from Budnikova 1995), h—N. pulchellus pulchellus (Krøyer, 1846) (from Sars 1895: pl. 122), i—N. pulchellus asiaticus ssp. nov., j—Shoemakeroides cornigerus (Shoemaker, 1964) (modified from Shoemaker 1964: fig. 9), k—Sh. gagarae (Gurjanova, 1972) (from Gurjanova 1972: fig. 16), l—Hendrycksopleustes neimanii sp. nov.

FIGURE 4. Neopleustinae Bousfield & Hendrycks, 1994, pereopod 1 (gnathopod 1): a—Neopleustes boecki boecki (Hansen, 1888) (from Sars 1895: pl. 122), b—N. boecki pacifica ssp. nov., c—N. carinatus Margulis, 1963 (original image by author), d—N. columbianus Hendrycks & Bousfield, 2004 (from Hendrycks & Bousfield 2004: fig. 27), e—N. euacanthoides Gurjanova, 1972 (modified from Gurjanova 1972: fig. 19), f—N. euacanthus (G. Sars, 1876) (modified from Sars 1885: Pl. 14), g—N. kussakini (Budnikova, 1995) (modified from Budnikova 1995), h—N. pulchellus pulchellus (Krøyer, 1846) (from Sars 1895: pl. 122), i—N. pulchellus asiaticus ssp. nov., j—Shoemakeroides cornigerus (Shoemaker, 1964) (modified from Shoemaker 1964: fig. 9), k—Sh. gagarae (Gurjanova, 1972) (from Gurjanova 1972: fig. 17), l—Hendrycksopleustes neimanii sp. nov.

FIGURE 22. Distribution of Neopleustinae species