Haploniscus angustus Lincoln, 1985

Brökeland, Wiebke & Svavarsson, Jörundur, 2017, Distribution of haploniscids (Isopoda, Asellota, Haploniscidae) in Icelandic waters, with description of Haploniscus astraphes n. sp. from the Iceland basin and the Southeast Atlantic Ocean, Zootaxa 4231 (3), pp. 301-326 : 314

Haploniscus angustus Lincoln, 1985

Haploniscus angustus Lincoln, 1985b: 676 –679, figs 11–12. — Kussakin 1988: 390–392, fig. 329.— Kavanagh 2009: 29.

Material examined. BIOICE stn. 2579, RV Håkon Mosby, RP sled, 15 July 1993, 67°0575N. 24°4327W, 996 m, - 0.58°C, 1 specimen (IMNH 36862). BIOICE stn. 2856, RV Bjarni Saemundsson, RP sled, 29 August 1995, 62°2050N, 16°5930W, 2074 m, 2.34°C, 3 specimens (IMNH 36863); BIOICE stn. 2859, RV Bjarni Saemundsson, RP sled, 29 August 1995, 61°5022N, 16°5286W, 2270 m, 2.37°C, 1 specimen (IMNH 36864); BIOICE stn. 3659, RV Håkon Mosby, RP sled, 24 July 2004, 67°4761N, 19°3638W, 806 m, -0.53°C, 2 specimens (IMNH 36865).

Remarks. Only females of H. angustus were found, which occurred on both sides of the GIF Ridge ( Fig. 10 C). The species has earlier been reported from several stations in the northern part of the Rockall Trough and the Porcupine Sea-Bight ( Lincoln 1985b; Kavanagh 2009). Svavarsson (1988) reported specimens of H. ingolfi from the Nordic Seas lacking a terminal process on the sixth article of antenna 2, which is one of the characteristics of H. ingolfi . Those specimens may possibly belong to the present species which does not have such process, rather than belonging to H. ingolfi .

Figures

FIGURE 10. Distribution of haploniscid species around Iceland (BIOICE localities): A, Haploniscus astraphes n. sp. (dot), H. ampliatus (triangle) and H. hamatus (square); B, H. aduncus; C, H. angustus.