Males have red stomachs
A male firefly has the"light" but the females do not
The bug that eats male fireflies and uses the same glow as the female firefly is called the "femme fatale" firefly. This predatory female firefly mimics the mating signal of the female firefly to attract and consume male fireflies. This deceptive behavior helps the femme fatale firefly to both lure and feed on unsuspecting male fireflies.
The male firefly uses it to attract female fireflies.
Both glow. but male fireflies would glow brighter as they have 2 'bulbs' while female fireflies only have 1
Mating behavior
Feeder fish, How do you tell male from female of the?
If a firefly is male its light will come from the last two segments of its abdomen. If a firefly is female its light will come from the second to last segment of its abdomen.
How do you tell a male pacific frog from a female
You can tell if a dog is male or female by looking at their genitals. Male dogs have a penis and testicles, while female dogs have a vulva.
Both male and female emus have blue on their necks. It is impossible to tell the male and female apart by appearance alone.
You can tell a male angel fish from a female one by all the colorful stripes it has. [the male one]
Because the male has a mane and the female does not have a mane.