Myrmecia (ant) encountered before. Based on five species, the median lethal dose (LD) is 0.18–0.35 mg/kg, making it among the most toxic venoms in the insect world. The toxicity of the venom may have evolved due to the intense predation by animals and birds during the day, since "Myrmecia" is primarily diurnal. In Tasmania, 2–3% of the human population is allergic to "M. pilosula" venom. In comparison, only 1.6% people are allergic to the venom of the western honeybee ("Apis mellifera"), and 0.6% to the venom of the European wasp ("Vespula germanica"). In a 2011 Australian ant-venom allergy study, the objective of
Longhorn crazy ant are omnivorous and feed on seeds, dead invertebrates, honeydew, plant secretions, fruit and a range of household scraps. Large food items may be moved by several ants working together. They consume honeydew predominantly in spring and autumn and may tend aphids, mealybugs and scale insects so as to maximise the secretions they produce. During the summer they preferentially seek a high protein diet. In buildings, they collect crumbs and the insect corpses found under lights. The longhorn crazy ant is able to invade new habitats and out-compete other species of ant. In 1991, in the large closed dome of the