Spectamen plicatulum is a species of sea snail, a marine gastropod mollusk in the family Solariellidae.

[1] The height of the shell attains 4 mm, its diameter 6 mm.

This species differs from the characteristics of the genus in having the longitudinal plications upon the upper part of the body whorl almost obsolete, and the two circumumbilical carinae are almost smooth.

This marine species is endemic to New Zealand.

This Solariellidae-related article is a stub.