Spathocera lobata can reach a body length of about. These squashbugs are characterised by a rather long, pale-sided pronotum. On the front of the pronotum there are six spines arranged in two transverse rows. The submedian carinae of the pronotum does not reach its base. The scutellumshows a black marking. The antennae are composed of three segments with a dilated black apex. The first segment of antennae is shorter than second.