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Says firefly (Pyractomena angulata), one of about 175 species of fireflies in the United States.
have a green flash, and Pyractomena, which have an amber flash.
Firefly larvae, sometimes called glowworms, are nocturnal and all produce light. Not much is known about the larvae since so many of them are subterranean. But some can be seen on vegetation in wet areas glowing eerily in the darkness.
Glowworms are predaceous and feed on whatever invertebrates they can attract or capture. Many are known to kill their prey by injecting poison into them. They overwinter in underground tunnels and then form pupae in early springtime, emerging
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