You will always be asked, “How can you tell whether a Monarch Butterfly is a male or a female?” It is asked each and every time I show photographs before groups of adults and children.
It’s August 17th and this butterfly is resting on a Common milkweed leaf (Asclepias Syriaca) at Raccoon Creek State Park in Hookstown, Pennsylvania.
This powerfully built butterfly demonstrates how to discern the sex of male and female Monarchs. Do you see that black patch on his left hindwing vein? Only males have these scent glands, one on each hindwing. If you see a Monarch and it doesn’t have two black scent patches, it’s a female. If it does have a black scent patch on each hindwing, it’s a male.
2013 has got to be a bummer for male Monarchs. With so few females about in the 48 continental U.S. states, males have more than the usual patrolling to do to find a mate. No time to waste!
- Earth Our Home too : Monarch Butterflies (propelsteps.wordpress.com)
- How to be a Butterfly Wrangler (theblondegardener.com)
- Habitat loss, No Monarchs this year (health4earth.com)
- Monarch butterfly habitat in Mexican forests at 20-year low (earthsky.org)
- The Plight of the Monarch Butterfly (theblondegardener.com)
- Monarch butterfly population plummets (northcountrypublicradio.org)