Leucon (Leucon) andeep Mühlenhardt-Siegel 2011, n.sp.

• Published in: Journal of Glaciology
• Main Author: Mühlenhardt-Siegel, Ute
• Format: Other/Unknown Material
• Language: unknown
• Published: 2011
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Coleoptera; Curculionidae; Leucon; Leucon andeep; Antarctic; The Antarctic; Weddell Sea; Weddell; Antarc*; Antarctica
• Online Access: https://zenodo.org/record/5245265; https://doi.org/10.5281/zenodo.5245265

Leucon (L.) andeep n.sp. (Figures 32–34) Material. Holotype subadult male, ZMH: K 42951; 4 February 2002. Type locality. Antarctica, western Weddell Sea, 60° 26.48 S 56° 04.00 W, 3954 m depth, ANT XIX, #43-E, epibenthic sledge. Paratypes: Peninsula: ANT XIX #43: 1 subadult male + 1 non-ovigerous female (dissected), 5 subadult males, 22 non-ovigerous females (mostly damaged), 14 mancas; W Weddell Sea: ANT XIX #46: 1 subadult male, 2 subadult females (1 dissected), 5 mancas. ZMH: K 42952. Etymology. The new species is named “ andeep ” after the acronym of the Antarctic deep-sea expedition. Diagnosis. Dorsomedian line of carapace serrate along more than half of its length with 12 teeth pointing upward, one single tooth close to the posterior margin of carapace; carapace longer than the free thoracic segments combined; ventral margin of pseudorostrum without teeth; antennal notch reaching behind the level of the anterior margin of the frontal lobe; basis of the anterior extremities like maxilliped 3, pereiopod 1 to 3 is equal in length or shorter than the rest of the appendages; uropod exopod shorter than endopod. Description. Holotype, 4.3 mm long (Fig.32). Carapace without lateral teeth, longer than free thoracic segments, dorsomedian line serrate along more than half its length with 12 teeth pointing upward, one single tooth close to posterior margin of carapace; pseudorostral lobes meeting in front of ocular lobe, ending acute, moderately long, 0.2 times as long as carapace; siphonal tube short; ocular lobe reduced; eyes missing. Antennal notch small but distinct, behind level of anterior margin of the frontal lobe; anterolateral tooth not very pronounced; anteroventral margin of carapace serrate at least anteriorly. Integument smooth. Five free thoracic segments visible. Pleon longer than carapace and free thoracic segments combined. Pleotelson as wide as long, only slightly shorter than uropod peduncle. Appendages: non-ovigerous female (paratype). Antenna 1 (Fig. 33, A 1): relative length of peduncle articles ...