Torquella grandis ( Hansen, 1913 ) Błażewicz-Paszkowycz, 2007

Błażewicz-Paszkowycz, Magdalena, 2007, Figure 6. Typhlotanais Compactus, Female A In Family Nototanaidae Sieg, 1976 And Typhlotanaidae Sieg, 1984, Zootaxa 1598, pp. 1-141 : 71-72

Torquella grandis ( Hansen, 1913) n. comb.

( Fig. 38 )

Typhlotanais grandis: Hansen (1913) 3(3): 52, 54–55; Nierstrasz (1913) 32(a): 37; Kudinova-Pasternak (1970) 86: 348; Lang (1970) 23(4): 273, 288; Morino (1971) 18(5): 353; Kudinova-Pasternak (1973) 91: 153; Kudinova-Pasternak (1977 (1978)) 108: 130; Holdich & Bird (1985)): 443; Larsen (2005): 210.

Typhlotanais sp. C : Belyaev (1966) 88; Kudinova-Pasternak (1975 b) 103: 213, 216, 226.

Typhlotanais grandis (?): Kudinova-Pasternak (1966) 45: 531; Kudinova-Pasternak (1968) 2: 73.

Material examined: Holotype: female, Ingolf Station 54, South of Iceland, 63°08'N, 15°40'W, depth 691 fm (= 1749 m); length 4.18 mm.

Diagnosis: Carapace 1.4 times as long as wide, over twice as long as pereonite-1. Pereonite-2 1.5 times as long as pereonite-1; pereonite-3 0.75 times as long as wide. Antennule article-3 about three times as long as article-2. Pereopod-1 merus and carpus longer than basis, merus with short seta (-ae), propodus with two short rod setae dorsally; pereopod-2 propodus with one seta just reaching half of dactylus, merus with short setae (about quarter of carpus), carpus with two simple setae reaching quarter of propodus; pereopods 1 and 2 with rod setae on merus, carpus and propodus; pereopods 4–5 propodus distal seta little shorter than dactylus; pereopods 4–6 with numerous spines around prickly tubercles; pereopod-6 propodus distal setae subequal. Uropod exopod about as long as half of endopod distal article.

Distribution: The type locality of T. grandis is situated in the Iceland Basin, 63°08’N 15°40’W at a depth of 1749 m. The species has also been reported several times from the North Pacific ( Kudinova-Pasternak 1970, 1973) at depths of 3800–6135 m.

Remarks: A complementary description of T. grandis is impossible owing to the existence of only the single type specimen (holotype) ( Fig. 38 A–G ). The holotype has an elongated pereopod-1 with merus and carpus combined longer than the basis, that distinguishes T. grandis from the other members of the genus Torquella .

The North-Pacific material studied by Kudinova-Pasternak is not available for study and it is impossible to make a comparison between Hansen’s and Kudinova-Pasternak’s material. The distribution of T. grandis in both the North Atlantic and the North-East Pacific is doubtful; since about ten putative (and undescribed) spe- cies of Torquella are known from the northeast Atlantic between Iceland and the Bay of Biscay (Bird per. comm.), the likelihood of finding new species in the North Pacific is high.

Figures

FIGURE 38. Torquella grandis. A) Holotype, female, lateral view; B) carapace ventral side; C) Pereopod-1; D) Pereopod-2; E) Pereopod-4; F) Pereopod-6 distally; G) uropod. Scale 0.1 mm.