Parapseudomma calloplura ( Holt & Tattersall, 1905 )

Wittmann, Karl J., 2020, Lophogastrida and Mysida (Crustacea) of the “ DIVA- 1 ” deep-sea expedition to the Angola Basin (SE-Atlantic), European Journal of Taxonomy 628, pp. 1-43 : 18-19

Parapseudomma calloplura ( Holt & Tattersall, 1905)

Material examined (non-types only) ANGOLA BASIN • 1 ♀ ad. (BL = 20.0 mm); 22°19.978′ S, 3°18.342′ E to 22°20.249′ S, 3°18.439′ E;

bottom depth 5179–5180 m; 9 Jul. 2000; DIVA-1 exped., #318; ZMH 58263 • 1 ♀ ad. (BL = 23.3 mm, head missing); 22°19.914′ S, 3°17.956′ E to 22°20.049′ S, 3°17.957′ E; bottom depth 5161–5162 m; 10 Jul. 2000; DIVA-1 exped., #320; ZMH 58264 • 2 imm. (damaged, BL = 6.1–7.0 mm); 17°4.935′ S, 4°40.805′ E to 17°07.454′ S, 4°42.276′ E; bottom depth 5460– 5460 m; 25 Jul. 2000; DIVA-1 exped., #344; ZMH 58266 • 1 imm. (BL = 9.4 mm, in separate vial); same collection data as for preceding; ZMH 58265 • 1 ♀ subad. (BL = 21.1 mm), 1 ♀ subad. (BL = ca. 14 mm, with tailfan missing); same collection data as for preceding; ZMH 58267 • 1 ♀ subad. (BL = 17.2 mm); same collection data as for preceding; ZMH 58268 • 1 ♀ ad. (BL = 17.3 mm, head missing); 16°16.989′ S, 5°27.279′ E to 16°19.280′ S, 5°27.205′ E; bottom depth 5430–5433 m; 28 Jul. 2000; DIVA-1 exped., #348; SMF 55193 • 1 ♂ imm. (BL = 11.2 mm); 16°13.329′ S, 5°26.837′ E to 16°14.820′ S, 5°26.702′ E; bottom depth 5433–5434 m; 29 Jul. 2000; DIVA-1 exped., #350; ZMH 58269 .

Type locality

Not stated by Holt & Tattersall (1905). They reported materials from four stations off Ireland, depth 199–382 fathoms (363–696 m). A rough estimate by the present author suggests that the stations are in the range of 52– 54° N, 12– 13° W.

Distribution

Previously reported from the NE-Atlantic and Mediterranean, 35– 58° N, 13° W– 14° E, depth 94–1200 m, and from the NW-Pacific off Japan, 35– 37° N, 137– 140° E, depth 220–660 m (W.M. Tattersall 1909, 1911; Colosi 1929; Băcescu 1941, 1989; Murano 1974; Nouvel & Lagardère 1976; Mauchline & Murano 1977; Mauchline 1986; Cartes & Sorbe 1995; Cartes et al. 2003; Frutos & Sorbe 2013; Sorbe & Elizalde 2013; San Vicente 2017). Frutos & Sorbe (2013) sampled this species in the near-bottom water layer. The here documented records in the SE-Atlantic at 16̄ 22° S, 3̄ 5° E, depth 5161̄ 5460 m, represent a strong extension of the known bathymetrical range; within the Atlantic also a strong southward extension (see Discussion).

Statoliths

Statoliths mineralized with fluorite, diameter 133̄169 μm (n = 6 statoliths of 3 adults).