Abstract: A cutting device for segmenting and derinding a half-section of a citrus fruit and for collecting the pulp thereof. It comprises: a rigid first ring, a number of arcuate knives spacedly upwardly projecting from a second integral ring toward an apex area to interconnect so as to form an outer semispherical open frame, the second ring being freely mounted to the first ring, each knife having a lengthwise exterior bevelled sharpened segmenting edge, a number of arcuate radially thick blades spacedly upwardly projecting from a third integral ring radially inwardly of the outer frame to form an inner semispherical open frame, the third ring being freely mounted to the first ring, each blade having an exterior sharpened derinding edge, the outer frame being rotatable about the first ring, and the inner frame being releasably locked to the first ring.