Leucon (Leucon) quattuormulierum Mühlenhardt-Siegel 2011, sp. n.
Leucon (Leucon) quattuormulierum sp. n. (Figures 29–31) Material. Holotype non-ovigerous female, ZMH: K 42949; 30 January 2002. Type locality. Antarctica, western Weddell Sea, 60° 39.19’ S 53° 56.85’ W, 2893 m depth, ANT XIX, #46-S, epibenthic sledge. Paratypes: Peninsula: ANT XIX #42: 81 subadult m...
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| Format: | Other/Unknown Material |
| Language: | unknown |
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2011
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| Online Access: | https://zenodo.org/record/5245263 https://doi.org/10.5281/zenodo.5245263 |
| Summary: | Leucon (Leucon) quattuormulierum sp. n. (Figures 29–31) Material. Holotype non-ovigerous female, ZMH: K 42949; 30 January 2002. Type locality. Antarctica, western Weddell Sea, 60° 39.19’ S 53° 56.85’ W, 2893 m depth, ANT XIX, #46-S, epibenthic sledge. Paratypes: Peninsula: ANT XIX #42: 81 subadult males, 5 adult males, 201 subadult females, 16 ovigerous females, 92 mancas (2 males and 1 female dissected) + 12 specimens for molecular genetics; ANDEEP III #154: 1 damaged female; W Weddell Sea: ANT XIX #46: 5 non-ovigerous females (1 dissected), 4 mancas. ZMH: K 42950. Etymology. The new species is named after four colleagues who tirelessly sampled during the ANDEEP expeditions: Angelika Brandt, Brigitte Ebbe, Kathrin Linse and Gisela Weigel. Diagnosis. Anterior ¾ of the dorsomedian line of carapace serrate, with 14 teeth directing forwards and getting successively smaller; no lateral teeth at carapace; two teeth ventrally on pseudorostrum; antennal notch shallow, reaching backwards to level of anterior margin of frontal lobe; the basis of the anterior extremities (maxilliped 3, pereiopods 1 to 3) is clearly longer than the rest of the appendages; pleotelson slightly produced between uropod peduncles. Description. Holotype, 5.4 mm long (Fig. 29). Carapace longer than free thoracic segments combined; anterior ¾ of the dorsomedian line serrate with 10 large and four smaller teeth (only visible in higher magnification), no tooth close to the posterior margin of carapace, no lateral teeth on carapace; pseudorostral lobes meeting in front of ocular lobe, two teeth ventrally on pseudorostrum; siphonal tube short; ocular lobe reduced; eyes missing. Antennal notch shallow, reaching backwards to level of anterior margin of frontal lobe; anterolateral tooth not pronounced, but clearly discernable; anteroventral margin of carapace serrate. Integument smooth. Five free thoracic segments visible. Pleon longer than carapace and free thoracic segments combined. Pleotelson slightly longer than wide, slightly produced between ... |
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