Scalpelloniscus cf. penicillatus Grygier, 1981

Hosie, Andrew M., 2008, Four new species and a new record of Cryptoniscoidea (Crustacea: Isopoda: Hemioniscidae and Crinoniscidae) parasitising stalked barnacles from New Zealand, Zootaxa 1795, pp. 1-28 : 19-20

Scalpelloniscus cf. penicillatus Grygier, 1981 b

( Fig 1 B)

Material examined: 1ɗ 2.92 mm ( NIWA 35059), stn E869, 19 March 1968, West Norfolk Ridge, 33°58.00'S 167°45.00'E, 1705 m, from Amigdoscalpellum vitreum , coll. R.V. Taranui.

Host: Amigdoscalpellum vitreum ( Hoek, 1883) , specific names of hosts were not given in Grygier’s (1981b) description.

Remarks: I tentatively identify this specimen as there are some differences between the specimen and the description of the holotype by Grygier (1981b), in that the dentition of the sixth pair of coxal plates is the same as the seventh (3 and 2 for the type material, respectively), and the dactylus is recurved in pereopod 6. There are also 9 teeth on antennule article 1—the lateral most tooth is narrow and isn’t separated from the second tooth, much like the species described herein. The material is old and more specimens will need to be found to check for the consistency of these differences, with further specimens it may be found that the presence of a 9th tooth is variable. The specimen was collected from a depth of 1700 m, the only other known locality for this species is the South Atlantic in 4550 m, further suggesting that it may be a separate species. The single specimen was found amongst material from the late Brian A. Foster, on a slide with the cirri and mouthparts of A. vitreum .

Figures

FIGURE 1. Map of New Zealand showing localities of where the current specimens of A, Crinoniscus cephalatus sp. nov. (Ο), C. politosummus sp. nov. (Π); B, Scalpelloniscus nieli sp. nov. (Ο), S. cf. penicillatus Grygier, 1981 b () and S. vomicus sp. nov. (Π) were collected.