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Monarch butterflies are still passing through the valley.
Here's the way to tell the males from the females: look at the hind wings. And here's another interesting nature word: androconium, pronounced [an-druh-KOH-nee-uhm]. They are scent scales on male butterflies. The dark spots
(plural-androconia) on the top photo are the male's scent glands. The bottom photo is a female. Her hind wings have thicker veins but lack the dark spots of the androconium.
Now you know.
Here's the way to tell the males from the females: look at the hind wings. And here's another interesting nature word: androconium, pronounced [an-druh-KOH-nee-uhm]. They are scent scales on male butterflies. The dark spots
(plural-androconia) on the top photo are the male's scent glands. The bottom photo is a female. Her hind wings have thicker veins but lack the dark spots of the androconium.
Now you know.
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