Pycnophyes farinellii, Sánchez & Pardos & Sørensen, 2014

Sánchez, Nuria, Pardos, Fernando & Sørensen, Martin V., 2014, Deep-sea Kinorhyncha: two new species from the Guinea Basin, with evaluation of an unusual male feature, Organisms Diversity & Evolution (New York, N. Y.) 14 (4), pp. 349-361 : 355

Pycnophyes farinellii sp. nov

( Figs. 4 and 5 )

Type material Holotype, adult female, collected on March 23, 2005 in the Guinea Basin at DIVA Station M 63/2 98, position 00°37′12″N, 006°28′06″W, from mud at 5,165 to 5,174 m depth; mounted in Fluoromount-G®; and deposited at the Museum für Naturkunde (Berlin, Germany) under accession number ZMB 11522 . Paratype, adult male were collected on March 19, 2005 in the Guinea Basin at DIVA Station M 63/2 79 ( Fig. 1 ), position 00°50′00″N, 005°35′00″W, from mud at 5,136 to 5,142 m depth; mounted in Fluoromount-G®; and deposited at the Museum für Naturkunde under accession number ZMB 11523 .

Diagnosis Pycnophyes with middorsal elevations on segments 2–9; anterior margin of tergal and sternal plates of segment 1 ornamented; and pairs of laterodorsal setae on segments 2 and 9, paralateral setae on segment 1, lateroventral setae on segments 2, 4, 6, and 8, ventrolateral setae on segments 5 and 10, and ventromedial setae on segments 2 and 9. Males do not have ventromedial tubes on segment 2.

Etymology The species name refers to Farinelli, a celebrated Italian castrato singer of the eighteenth century, with reference to the species’ lack of conspicuous ventral tubes normally present on segment 2 of male Pycnophyes —a typical sexual character of the genus.

Figures

Fig. 4 Line art illustrations of P. farinellii sp. nov. a Female, ventral view. b Female, dorsal view. c Male, segments 10 and 11, ventral view. Scale bar 100 μm. cr cuticular ridge, cs cuticular scar, ica intracuticular atria, lds laterodorsal seta, ldss laterodorsal sensory spot, lvs lateroventral seta,

Fig. 5 P. farinellii sp. nov. Differential interference contrast photographs. a–c and g Holotypic female. d–f and h Paratypic male. a Ventral view. b Dorsal view. c Dorsal view of anterior margin of segment 1. d Ventral view of segment 1. e Right sternal plates of segment 2. f Ventral view of segment 5. g Right sternal plates of segments 8 and 9. h Ventral view of

Fig. 1 Map showing the sampling areas of R/V Meteor and the two sampling localities, M63/2 79 and M63/2 98