Leucon (Crymoleucon) grandidentatus Mühlenhardt-Siegel 2011, sp. n.
Leucon (C.) grandidentatus sp. n. (Figures 26–28) Material. Holotype subadult male, ZMH: K 42947; 30 March 2005. Type locality. Antarctica, Peninsula, 62° 32.52’ S 64° 35.49’ W, 2525 m depth, ANDEEP III, #154-E, epibenthic sledge. Paratypes: Peninsula: ANDEEP III #154-S: 1 ovigerous female (dissecte...
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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/5245261 https://doi.org/10.5281/zenodo.5245261 |
| Summary: | Leucon (C.) grandidentatus sp. n. (Figures 26–28) Material. Holotype subadult male, ZMH: K 42947; 30 March 2005. Type locality. Antarctica, Peninsula, 62° 32.52’ S 64° 35.49’ W, 2525 m depth, ANDEEP III, #154-E, epibenthic sledge. Paratypes: Peninsula: ANDEEP III #154-S: 1 ovigerous female (dissected); W Weddell Sea: ANDEEP III #110-E: 1 subadult female. ZMH: K 42948. Etymology. The new species is named after the large teeth at the anterior dorsomedian part of the carapace. Diagnosis. Dorsomedian serration with seven large and 11 smaller teeth reaching posterior margin of carapace; no teeth laterally at carapace, only one ventrally at pseudorostrum. Description. Holotype, 5.8 mm long (Fig. 26). Carapace longer than free thoracic segments; dorsomedian denticulation reaching end of carapace; anterior denticulation with seven teeth large and 11 teeth diminishing towards the posterior margin, last tooth after small gap, no teeth laterally on carapace; pseudorostral lobes long, slightly less (factor 0.4) than half of carapace measured from ocular lobe to posterior margin of carapace; directed forwards, without dorsal teeth or hair-like setae along margins but two teeth at basis of pseudorostrum; siphonal tube not longer than pseudorostrum; ocular lobe reduced; eyes missing. Antennal notch in level with anterior margin of frontal lobe, not pronounced; anterolateral margin above antennal notch, with two larger and three very small (only visible in higher magnification) teeth; anterolateral tooth not produced; anteroventral margin of carapace slightly serrate (about five to eight teeth). Integument of carapace smooth, scaly structure only on abdomen. Five free thoracic segments visible. Pleon as long as carapace and free thoracic segments combined. Pleotelson slightly longer than wide; 0.8 times as long as uropod peduncle. Appendages: female (paratype). Antenna 1 (Fig. 27, A 1): relative length of peduncle articles 1 to 3: 32/37/31; slightly geniculate between article 1 and 2; fringe of setae along article 1 lower ... |
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