Heptnerina, Ivanenko & Defaye, 2004

Ivanenko, Viatcheslav N. & Defaye, Danielle, 2004, A new genus and species of deep-sea cyclopoid (Crustacea, Copepoda, Cyclopinidae) from the Mid-Atlantic Ridge (Azores Triple Junction, Lucky Strike), Zoosystema 26 (1), pp. 49-64 : 51

Genus Heptnerina n. gen.

TYPE SPECIES. — Heptnerina confusa n. sp.

ETYMOLOGY. — The new generic name derives from the family name of the marine biologist Mikhail V. Heptner (1940-2002), collaborator and teacher of the first author.

DIAGNOSIS. — First pedigerous somite free, concealed laterally beneath posterior outgrowth of cephalosome. Paragnath armed with four setae. Caudal ramus with seven setae, seta I short. Antennule of female 10- segmented, with subdivided third, fourth and fifth segments; antennule of male 17-segmented. Antenna with two long exopodal setae. Mandibular palp with two-segmented endopod and four-segmented exopod; distal segment with two setae, one shorter and with setules on tip. Maxillule with exopod bearing four setae, one shorter and with setules on tip. Maxilla with praecoxa and coxa separated by arthrodial membrane posteriorly. Maxilliped composed of seven segments: praecoxa with two endites armed with one and three setae; coxa and basis each with one endite armed with two strong setae; four-segmented endopod with setal formula 0, 0, 1, 4. Legs 1-4 with three-segmented rami; spine and seta formula as for type species. Endopod of leg 4 with three particularly robust setae (two setae on second segment and proximal seta of third segment). Fifth leg with intercoxal plate, and with protopod armed with external seta. Exopod of female leg 5 one-segmented, bearing two spines and one seta; exopod of male leg 5 one-segmented with two additional internal setae. Short segment-like endopodal structure of leg 5 in female present or absent. Sixth leg with three setae in both sexes.