Scleroconcha tuberculata Chavtur & Keyser, 2016, sp. nov.
Scleroconcha tuberculata sp. nov. Chavtur (Figs. 2–11) Etymology. The specific name “ tuberculata ”, from the Latin “tuberculum” [engl.: small hump], refers to sclerotic tubercles on the medial eye. Holotype. MIMB 18268—adult male, (length 4.20 mm), appendages mounted on slide and valves in ethanol...
| Main Authors: | , |
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| Format: | Other/Unknown Material |
| Language: | unknown |
| Published: |
2016
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| Subjects: | |
| Online Access: | https://zenodo.org/record/6069962 https://doi.org/10.5281/zenodo.6069962 |
| Summary: | Scleroconcha tuberculata sp. nov. Chavtur (Figs. 2–11) Etymology. The specific name “ tuberculata ”, from the Latin “tuberculum” [engl.: small hump], refers to sclerotic tubercles on the medial eye. Holotype. MIMB 18268—adult male, (length 4.20 mm), appendages mounted on slide and valves in ethanol (70%). Type-locality. D/E “Ob “, 8 th Soviet (Russian) Antarctic Expedition, 19. February 1963, station E, sample 2, lat. 67°40’1”S, long. 45°48’5” E, depth—unknown, sandy bottom. Paratypes (coordinates, depth and bottom sediment see Appendix). D/E “Ob“, 8 th Soviet (Russian) Antarctic Expedition, station E, sample 2: MIMB 18269—adult female (length 4.50 mm), MIMB 18270—adult female (4.45 mm), MIMB 18271—adult female (carapace deformed), MIMB 18272—adult female (4.32 mm), MIMB 18 273— immature male (3.12 mm), MIMB 18275a, b, c—adult females (4.50, 4.41 and 4.34 mm). R /V “Academic Fedorov”, 34 th Soviet (Russian) Antarctic Expedition, station 16/62, sample 2: MIMB 18274—immature male A-1 (4.04 mm). RV “Polarstern”, ANT VIII/5, station 16-477: ZMH-K-42259—immature male A-1 (3.42 mm). RV “Polarstern”, ANT XIII/3, station 39/05/EBS: ZMH-K-42260—immature male (3.15 mm) and ZMH-K- 42261—immature female A-1 (3.46 mm). RV “Polarstern”, ANT XV/3, station 114: ZMH-K-42262—immature female (3.62 mm). Additional material. See Appendix. Diagnosis of adult female. Carapace: Length 4.32–4.53 mm. Carapace reticulate with ribs along ventral and dorsal margins, one rib lying just within antero-ventral valve margin and being present only on anterior half of valve; middle rib extending full length of valve and lying dorsal of the central muscle attachments; a lower rib extends almost full length of valve and lies below the central muscle attachments. Surface of valves with scattered undivided setae. Seventh limb. Each limb with 10–12 setae, 6 in distal group and 4–6 in proximal group. Terminal limb with 13– 17 pegs in total (on comb and opposite comb); teeth on comb absent. Caudal furca. Each lamella with 15–17 claws; 3rd claw slender ... |
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