Heteromesus wolffi Chardy 1974

• Main Authors: Cunha, Marina R., Wilson, George D. F.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2006
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Isopoda; Ischnomesidae; Heteromesus; Heteromesus wolffi; North Atlantic
• Online Access: https://doi.org/10.5281/zenodo.5064434; http://treatment.plazi.org/id/EB65B41CFFA2E4466A4DFC6BD4F99378

Heteromesus wolffi Chardy, 1974 Heteromesus wolffi Chardy 1974: 1543–1546, figs. 4–5; Kussakin 1988: 475–476, figs. 388–389. Material examined Holotype: male (6.2 mm), North Atlantic, Labrador Basin, 55º52.5’N 49º53.4’W, R / V Jean Charcot, Campagne Noratlante stn 10 prl E 04, 3465 m (MNHN IS­3361). Remarks on type material. The holotype was dissected by Chardy. Some dissected parts were found loose in the vial. Diagnosis (Male only) Head with squat anterolateral projections supporting antennae, projection width exceeding length;. Pereonites 1–3 with median dorsal and anterolateral simple spines. Pereonite 5 length 8.6 width. Pleonite 1 region with dorsal tubercles. Pleotelson with dorsal tubercles; posterolateral margin anterior to uropods without spines or tubercles. Antennula with 4 articles altogether. Description ( Male characters only ) Body length 6.2 mm, granular. Head length 0.65 width; dorsal surface with pair of cephalic bullae, cuticular structure coarse tubercular granulation; lobe on ventrolateral margin absent in lateral view. Pereonite 1 width 0.15 total body length; with median simple spine, 1 pair of anterolateral simple spines and 1 pair of lateral tubercles (indistinctly illustrated). Pereonite 2 with median simple spine, 1 pair of lateral simple spines. Pereonite 3 with median simple spine, 1 pair of lateral simple spines. Pereonites 1–3 long simple spines decreasing in length from pereonite 1 to 3, length near pereonite 1 length. Pereonite 4 length 0.60 width. Pereonite 5 length 0.40 total body length. Pleonite 1 region of pleotelson with 1 pair of median tubercles and 2 pairs of dorsal tubercles. Pleotelson length 1.25 width; medially indented, bilobed posteriorly with 1 pair of dorsal tubercles on lateral fields above incision of lateral margin. Antennula article 2 length 0.9 head width, with 3 elongate stiff ventromedial setae (possibly 4); article 3 length similar to article 4, article 3 short and tubular, length near width, aesthetascs absent. Antenna article 3 length 0.64 anterior ...