A Little Science Lesson

July 30, 2007

The other day we were outside and I saw this hanging off the birdbath:

It looked like a bunch of leaves hanging there and as I looked I could see it was a bag worm. I was amazed at how it had disguised itself to look the tree next to the birdbath. I called for Tom and the kids to take a look at this. Then after careful consideration of the tree, it was covered in these bag worms and we never knew it!


So I looked up some facts about these little guys and thought I would share it with you:

Winter The eggs over-winter inside the bag made by the previous year’s female.

Spring Egg hatch occurs from late May to early June, at which time the larvae crawl out in search of food. Each constructs a small bag around its hind parts with silk and plant material.

Summer Feeding, growth and molting continue until August, at which time the mature larvae attach themselves to twigs. They close the bag and reverse themselves so that they are head down in the bag. They remain there for about 4 weeks as pupae.

Fall During September and early October, the female releases a sex attractant pheromone and the males leave their cases and fly to the female bags to mate. Females lay 500-1000 eggs in each bag.


I am constantly amazed at the intricate design that our creator uses in our beautiful world around us!

God, Creator of the heavens—
he is, remember, God.
Maker of earth—
he put it on its foundations, built it from scratch.
He didn’t go to all that trouble
to just leave it empty, nothing in it.
He made it to be lived in.
Isaiah 45:18 The Message



3 responses to A Little Science Lesson

  1. I’m thinking that’s where tequilla worms come from.

  2. hmmmm. . . :fish

  3. We had some kind of worm on our red maple. The chem-lawn people treated it for us. I never thought we’d use a lawn service. I never thought James would be into his lawn. Never say never!

    Bag worms are kinda icky, but the facts were interesting. God’s creation is amazing. The girls had a bucket of tadpoles and it was really neat to see all the various stage of growth. Some were starting to grow legs, etc. Very cool.