The crusader bug (Mictis profana) is commonly found in Australia and neighbouring countries, in urban and agricultural areas, coastal heath, forests and woodlands. They feed on a wide range of plants, including wattles, eucalypts and garden plants (e.g. roses). Cultivated crops affected by crusader bugs include citrus, beans, tomatoes and papaw.
Adults and nymphs prefer to feed on new shoots. They use their sucking mouthparts to pierce new shoots and extract sap. Feeding causes the damaged tissue to wilt and die. They are active all year, except winter.