Macrotritopus

The genus Macrotritopus are small octopus with elongate-ovoid mantle, and with long and slender arms 4-7 times the mantle length and with the third arm pair distinctly longer than the others (and with the dorsal arm pair always shortest). The arms are also capable of autotomy near the arm bases, have only very shallow webbing, and the males have a very small hectocotylus on the third right arm (hectocotylus length <3% the arm length). ==Species==

• Macrotritopus defilippi (Vérany, 1851), Type species of genus, restricted to NE Atlantic and Mediterranean (Macrotritopus danae Joubin & Robson, 1929 is considered a synomym) . • Macrotritopus equivocus (Robson, 1929) (taxon inquirendum, juvenile: identity unresolved) • Macrotritopus scorpio (Berry, 1920) (taxon inquirendum, unresolved, potential name for West Atlantic "defillipi") • Macrotritopus beatrixi (Guerrero-Kommritz & Rodriguez-Bermudez, 2018), Described for adult Macrotritopus from the southern Caribbean, it is probably a junior synonym of M. scorpio, but this couldn't be determined by the authors, who thus chose to allocate it a new name. ==References==