On the diversity of abyssal Dondersiidae (Mollusca: Aplacophora) with the description of a new genus, six new species, and a review of the family Author Cobo, M. Carmen 0000-0002-8481-2086 Department of Zoology, Genetics and Physycal Antrhopology, University of Santiago de Compostela. Rúa Lope Gómez de Marzoa, s / n. Campus Vida. 15782 Santiago de Compostela, Spain. & Department of Biological Sciences and Alabama Museum of Natural History, University of Alabama. 300 Hackberry Lane, Tuscaloosa, AL 35487, USA. & kmkocot @ ua. edu; https: // orcid. org / 0000 - 0002 - 8673 - 2688 mariadelcarmen.cobo@usc.es Author Kocot, Kevin M. 0000-0002-8673-2688 Department of Biological Sciences and Alabama Museum of Natural History, University of Alabama. 300 Hackberry Lane, Tuscaloosa, AL 35487, USA. & kmkocot @ ua. edu; https: // orcid. org / 0000 - 0002 - 8673 - 2688 kmkocot@ua.edu text Zootaxa 2021 2021-02-18 4933 1 63 97 journal article 8067 10.11646/zootaxa.4933.1.3 1ec7cff3-1bd4-4038-87fc-8a6d87f4c7ef 1175-5326 4547986 303F97F8-463C-4A52-B5D7-28154E492493
TABLE 4. Main diagnostic characters of the genera of Nematomenia species with radula. (+) presence; (-) absence; (?) unknown.
N. ptyalosaN. tegulataN. divaeN.? guineanaN. brasiliensis
DistributionAntarctic 148 - 201mAntarctic 148 - 201 mGuinea Basin 5144 mGuinea Basin 5142 mBrazil Basin 4500 m
Size (mm)6 x 0.3511 x 0.73.77 x 0.231.5 x 0.26.9 x 0.5
BodyElongate bodyElongate body, pointed posterior endElongate body, rounded poste- rior endElongate body, pointed anterior end, truncated posterior endElongate body. With a sharp dorsal keel and a small slight posterior lobe Pointed posterior end
ScalesLeaf and pallet- shapedLeaf and pallet- shapedLeaf and pallet- shapedLeaf-shaped and laminar (two)Leaf (six) and pallet- shaped scales (two).
Common atrio- buccal cavity+++++
Atrial pappillaeDigitiform, short (3-5)Digitiform, shortDigitiform, long (6-8)-Digitiform (numerous) and bilobulated
Subradular pouch---+-
Ventrolateral foregut glandsBlister shapedBlister shapedBlister shapedLong ductsBlister shaped
Dorsal foregut gland+---+
Midgut caecum-+-+-
Seminal recep- tacles?+--+
Dorsoterminal sensory organ?---+