Abralia heminuchalis is a species of enoploteuthid cephalopod native to the equatorial regions of the Pacific Ocean. It may be a junior synonym of A. siedleckyi. Females are larger (28âÂÂ37 mm mantle length) than males (25âÂÂ32 mm mantle length). Oocytes in mature females can reach 1.25 mm in length. Male spermatophores are relatively small at 3.6âÂÂ4.0 mm in length.