• Early fall fireflies…or are they?

    Question

    The last few nights on my walk after dark I have seen what looks like many fireflies sitting still in the grass with their lights slowly glowing (not blinking as you would normally expect from fireflies in the summer). Are these fireflies? or is it some other insect that uses bioluminescence?

    Naturalist's Response

    Lucky you!!! What you are seeing are glow worms – the larval form of fireflies! Glow worms are active in your soil and vegetation catching and consuming prey throughout late summer and fall. They will overwinter beneath the soil, become active again in the spring, then form pupae and become adult fireflies in June.

    -Naturalist Tami Gingrich