Four new species of the genus Leucon (Crustacea: Cumacea) from the Atlantic Frontier Margin

Abstract

Four new species of the genus Leucon and subgenus Leucon (sensu Watling, 1991) are described from the Atlantic Frontier Margin and other northeast Atlantic localities. They are L. sarsi sp. nov., L. holti sp. nov., L. hanseni sp. nov. and L. afeni sp. nov. Leucon hanseni sp. nov. has previously been wrongly identi¢ed as L. serratus, the holotype of which is illustrated here. A lectotype is selected for L. nathorsti and the species is redescribed from the type series and from Atlantic Frontier Margin material. A list of other Leucon (Leucon) species found in the Atlantic Frontier Environmental Network surveys is given.

Lampropidae (Crustacea: Cumacea) from the deep north-east Atlantic and the North Sea, with two new species of Hemilamprops and Mesolamprops

“…Measurements of total body length were made from the anterior tip of the pseudorostrum to the end of the telson. For the definition of the developmental stages used in the descriptions, see Shalla & Bishop (2004…”

“…Previous papers (Shalla & Bishop, 2004 have reported aspects of the cumacean fauna collected during Atlantic Frontier Environmental Network (AFEN) surveys north and west of Scotland in 1996 and 1998, and the UK department of Trade and Industry (dTI) White Zone (WZ) survey in the Faeroe-Shetland channel in 2000 (see Bett, 1997Bett, , 1999Bett, and 2001a for sampling localities etc.). In 2002, the dTI carried out another survey in the area north and west of Orkney and Shetland; no reports from this survey have been published, but see dTI (2003) for details.…”