Berryteuthis septemdentatus ( Sasaki, 1915 ) Alexeyev & Katugin & Bizikov, 2022

Alexeyev, D. O., Katugin, O. N. & Bizikov, V. A., 2022, Taxonomic status of squids of the genus Berryteuthis Naef, 1921 (Gonatidae, Oegopsida) inhabiting the Sea of Japan, Ruthenica, Russian Malacological Journal 32 (2), pp. 53-59 : 57

Berryteuthis septemdentatus ( Sasaki, 1915) comb. nov.

( Fig. 1)

Gonatus septemdentatus Sasaki, 1915: 185 ; 1929: 270, Pl. XXII, figs 19–22, textfigs 129, 130.

Gonatus magister Berry, 1913 – Kondakov, 1941: 224, fig. 12, 13 [in part]; Akimushkin, 1963: 185, fig. 51(1) [in part].

Berryteuthis magister – Nesis, 1982: 190, fig. 50 a,b [in part]; Roper et al., 1984: 143 [in part].

Berryteuthis magister nipponensis Okutani, Kubodera in Okutani et al., 1987: 132 [in part]; Jereb, Roper, 2010: 211 [in part].

Berryteuthis magister shevtsovi Katugin, 2000: 91 , figs 7–11.

Type material: holotype specimen of Berryteuthis magister shevtsovi is designated as neotype for Berryteuthis septemdentatus : mature male, 162 mm dorsal mantle length ( Fig. 1); Research Vessel “ Professor Kaganovsky ”, Sea of Japan, 42 ° 30´N, 133 ° 42´E, bottom trawl at a approx. 600 m deep, May 23, 1996. Coll. by P. V. Kalchugin , deposited in the Museum of A. V. Zhirmunsky National Scientific Center of Marine Biology (Vladivostok), Far Eastern Branch of the Russian Academy of Sciences, No MIMB 32372 .

Paratype: immature female, 172 mm dorsal mantle length, the same locality and date; deposited in the same collection with the holotype, No MIMB 32373 .

The transfer of Berryteuthis anonychus (Pearcy and Voss, 1963) to new genus Okutania [ Katugin, 2004] rendered Berryteuthis a monotypic genus, but we suggest that there are, indeed, two species, which are now recognized as Berryteuthis septemdentatus and B. magister . The latter one as presently understood is likely be composed of several geographical populations for which there is preliminary evidence [ Katugin, 1998, 1999, 2000; Katugin et al., 2013; Alekseev, 2020].