Saturday, October 26, 2024

The Beautiful Muslin Moth

 

Happy Intersex Awareness Day!

This year, I bring you a muslin moth. These moths are often cited as boldly illustrating "sexual dimorphism," which is the idea that sex is a binary, and males and females are very different creatures indeed. In the muslin moth, it's framed as day and night, with the males being black and the females being white.

Only sex is not a binary. Yes, muslin moths too can be intersex! Generally this won't be visible, but being moths, sometimes it is strikingly so, because unlike humans, moths can be "bilateral gynandromorphs," with typical male coloration on one side and typical female coloration on the other.

Sex is never a binary, even when it's black and white.

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