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Leucon ( Leucon ) sarsi sp. nov. ( A^B ) Holotype: BMNH 2002.97, ‘Discovery’ Station 10112#2 brooding female; ( C^J ) Paratype BMNH 2002.101^107, SMBA ES 10 preparatory female. (A) Whole animal lateral view; (B) carapace lateral view; (C) ¢rst antenna; (D) third maxilliped; (E) ¢rst pereopod; (F) second pereopod; (G) third pereopod; (H) fourth pereopod; (I) ¢fth pereopod; (J) uropod. Scale bars: A, 1 mm; B^J, 0.2 mm.
Source publication
Four new species of the genus Leucon and subgenus Leucon (sensu Watling, 1991) are described from the Atlantic Frontier Margin and other north-east 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 identified as L.
serratus, the holotype...
Contexts in source publication
Context 3
... ( Figure 1A,B): laterally compressed, deep, with lateral spine on the frontal lobe. Dorsal crest with row of 18^19 teeth ending just before the posterior margin; this row unbroken or with short gap near posterior end. ...
Context 4
... lateral corner rounded-acute. Antennal notch U-shaped with one blunt small tooth and three pointed teeth, gradu- ally decreasing in size, on ventral margin ( Figure 1B). Pseudorostrum short, 0.22^0.24 ...
Context 5
... antenna ( Figure 1C): short, not exceeding the tip of the pseudorostrum. Peduncle and £agellum both 3-seg- mented. ...
Context 6
... maxilliped ( Figure 1D): basis 1.3 times length of the distal articles combined; dorsal lateral projection does not extend beyond ischium. Ischium plus merus sub-equal to carpus. ...
Context 7
... pereopod ( Figure 1E): slender, carpus not exceeding the antero-lateral corner of the carapace. Basis 0.95 times the distal articles combined, with one stout setulose seta on the ventral distal corner and 7^8 very ¢ne teeth on lateral margin. ...
Context 8
... pereopod ( Figure 1F): basis sub-equal to the distal articles combined, lateral margin with nine very small teeth. Ischium 0.3 times merus; ischium plus merus sub- equal to carpus; propodus 0.6 times dactyl. ...
Context 9
... pereopod ( Figure 1G): basis long and cylindrical, 1.8 times distal articles combined. Exopod sub-equal to basis, basal segment with sub-terminal tooth. ...
Context 10
... and ¢fth pereopods ( Figure 1H,I): no exopod; basis of fourth pereopod 1.5 times length of distal articles com- bined. ...
Citations
... Considering all available information, the characters to distinguish Nippoleucon hinumensis females from females of European species of the genus Leucon Krøyer, 1846 are (compare Sars 1899; Shalla and Bishop 2004): ...
The cumacean Nippoleucon hinumensis was recorded for the first time in Europe during a national monitoring survey of macrozoobenthos in the German Baltic Sea in April 2019. In total, five female individuals were found in the Strelasund near Stralsund, Germany. Nippoleucon hinumensis is native to the northwest Pacific and a successful invader of the American west coast since the 1970s. Since ovigerous females were detected among the collected individuals, N. hinumensis might have already reproduced successfully in the Baltic Sea.
... 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. ...
... 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 ...
Material collected during surveys of the Atlantic Frontier Margin (north-east Atlantic) in 1996, 1998, 2000 and 2002 includes ten species of the cumacean family Lampropidae belonging to three genera. A new species of the genus Hemilamprops, H.
pterini, is described. Hemilamprops
cristatus is partially re-illustrated from specimens sent to A.M. Norman by G.O. Sars. A key to the North Atlantic species of Hemilamprops is provided. A new species of the genus Mesolamprops, M.
hartleyi, is described from the Atlantic Frontier Margin and the North Sea. The first record of Mesolamprops
denticulatus from the Atlantic is reported. A key to the species of Mesolamprops is provided. Two species of the genus Platysympus were also found. A list of other lampropid species found in the Atlantic Frontier Margin is given.
Our knowledge on the deep-sea peracarids at a global scale is limited, and this gap in knowledge is still larger when we refer to the peracarids from off the coast of Argentina. With the aim of improving this situation, a complete and accurate inventory of the deep-sea isopods, cumaceans, and amphipods from off the coast of Argentina is presented. This inventory is based mainly on data taken from the literature, but some records provided in the GBIF database were included as well. A total of 126 stations taken during 24 oceanographic surveys carried out by seven countries were compiled. Isopoda showed the highest number of species (107 spp.) followed by Cumacea (50 spp.) and Amphipoda (47 spp.). A large amount of specimens, including many new species, has been collected in recent years and wait to be described. Thus, it is expected that the number of species recorded from the area substantially increases in the near future.
Benthic environmental assessments associated with oil and gas explorations along the UK Atlantic Margin have revealed deficiencies in the taxonomy of many deep-water taxa. Amongst the Bivalvia the protobranch genera Yoldiella and Portlandia are particularly complex. This study presents tabular keys, shell and gut loop descriptions for those taxa living on the continental slope and abyssal areas of the Atlantic Margin west and north of Scotland. The study is based primarily on samples collected in three surveys under the direction of the Atlantic Frontier Environmental Network (AFEN) between 1996 and 2000, with additional material from museum collections. Specimens were found at 239 stations from depths ranging from 98m on the outer continental shelf to 2046 m in Rockall Trough. One species of Portlandia and eight species of Yoldiella were recognized in the AFEN material P. intermedia, Y. annenkovae, Y. curta, Y. jeffreysi, Y. lucida, Y. nana, Y. philippiana, Y. propinqua and Y. valorousae nom. nov. Yoldiella annenkovae is recorded for the first time in British or Irish waters. Yoldiella valorousae nom. nov. is a replacement name for Y. lata sensu Allen, Sanders & Hannah 1995). A further 8 species that occur in parts of the NE Atlantic adjacent to the AFEN study area are included. Y. biscayensis, Y. fabula, Y. frigida, Y. incala, Y. insculpta, Y. lenticula, Y. solidula, Y. thaerella sp. nov. Y. thaerella sp. nov. is Y. inconspicua inconspicua sensu Allen, Sanders & Hannah 1995 non Y. inconspicua Verrill & Bush, 1898. Y. incala is a taxon raised to species rank from Y. obesa incala Allen, Sanders & Hannah 1995).
