monarch butterfly,

monarch butterfly, credit: johndudak / Essentials Collection /Getty Images

insect_iconSpecial Concern Provincially and Nationally


• Large orange and black butterfly with small white spots
• Caterpillar black, white and yellow striped; feeds on milkweed plants
• Jade-coloured chrysalis with gold spots
• Migrates to Oyamel fir forest of Mexico in winter


• Eastern population is widespread throughout Ontario


• Habitat loss
• Widespread and increasing use of insecticides and herbicides
• Climate change
• Severe weather events


• Not protected under the Endangered Species Act, 2007 or under the Species at Risk Act, 2002


Since the late 1990s, both the western and eastern populations of the monarch have declined dramatically.