Lightning Bug?

A little beetle crawling along a branch.  He looks like something I would have caught and put into a jar when I was little – a Lightning Bug.  But here he is roaming around, not on a hot, humid summer evening, but in WINTER.  This doesn’t make sense.  So much of Mother Nature’s world is a mystery, but that’s why I’ve got all those books in my library.  Books for the baffled master naturalist.  Go digging in those books.


Mystery solved!  This beetle is a Winter Dark Firefly, Ellychnia corrusca.  A cousin to my childhood memory, Lightning Bug.  This Winter Dark Firefly, as larva and pupa, produces his own light.  As a young adult he will still glow but as he ages he loses that glow.  As an adult he finds a snug winter home under tree bark and emerges in late winter or early spring, where I find him crawling along a branch.

Published by

Brenda Clements Jones

Brenda is a certified Virginia Master Naturalist, a Habitat Defender for Shenandoah National Park, and a devoted fan of Mother Nature. She lives in a cabin in the Blue Ridge Mountains near Shenandoah National Park, and hikes up to the higher elevations of her mountain often to see what nature is up to. Her constant hiking companion is a camera that captures nature as it unfolds through the seasons. It’s her goal to share the natural world around her through her photographs.

8 thoughts on “Lightning Bug?”

  1. Oooh Winter Dark Fly … I love learning about new insects especially if they belong here! So interesting. My last really fun find was a black-legged cricket. Of course I found him on the wall of our shop next to the tall stems of JoePye and Helianthus Microcephalus because they winter over the hollow stems of plants.

    1. So many insects, so little time Kathy! I love to find one, get a picture of it and learn learn learn about him! How cool that you found that cricket making himself at home in just the perfect surroundings for him! Mom says it’s mighty warm down there. Enjoy your time down there!

  2. “As a young adult he will still glow but as he ages he loses that glow,” I know the feeling. lol

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