Cylindromyia interrupta can reach a length of and a wingspan of. Body is slender. Thorax is black, while the abdomen is reddish with two silver rings, a wide longitudinal black marking and black apical tergites. Hind tibiae have 1 or 2 posteroventral bristles. Apical scutellars are absent. The abdomen has median discal bristles on tergites 1, 2, 3 and 4. The bright white calypteres stand out.