Welcome to My Project!

I was born and raised in Florida. After many years of travel, attending plein air paint outs, I discovered that residencies are the best way to explore the natural world I love. Working for an extended period from seven to ten days really enhances my painting experience. I am lucky to have friends and collectors who make it possible to explore the exciting and interesting locations I love to paint. Supporters provide their unoccupied vacation homes or hotel lodging for my residencies throughout the year. I am always delighted to leave an original framed painting for them as my thanks for their generous gift. If you would like to sponsor a residency, I would love to hear from you.
Contact me at: linda@lindablondheim.com

You can receive this blog automatically in your email by submitting it below.

You can receive this blog in your email automatically

Thursday, October 25, 2012

Bagworms in Red Cedar Trees

One of my readers asked me about Bagworms in Red Cedar Trees. I'm passing this along for anyone interested. It came from E How.


  • Bagworms are the larvae of the bagworm moth (Thyridopteryx ephemeraeformis). These insects feast on foliage and spin silken sacks covered with the scales of the cedar. This provides the bagworm effective camouflage from predators. The moth's eggs overwinter in a silk bag produced by the female. The bag also contains the body of the dead mother.

Life Cycles

  • The eggs hatch in April or May and the larvae immediately begin feeding and producing their bags, which eventually reach a length of more than 1 inch and hang from stems or twigs on the tree. The female bagworm begins transforming into an adult in August with males emerging later that month or September. The males fly from bag to bag searching for wingless females that remain inside their protective covers.


  • Adult males possess a black, hairy body and a wingspan of approximately 1 inch, while the females are similar in appearance to maggots. They are yellowish-white in color with no wings or legs and only a small circle of hairs at the end of the abdomen. The bagworm larvae claim a brown abdomen and a white head with spots and eventually grow to 1 inch in length. The female bagworm lays several hundred white eggs and produces one generation annually.


  • Bagworm larvae are capable of completely defoliating trees, a dilemma that has the potential to kill the cedar. As the silken bags are easy to spot hanging from the tree, the simplest bagworm eradication method is to inspect the cedar in winter, remove the bags by hand and destroy the eggs inside. Conduct chemical control through spraying in June when all the larvae have emerged from their bags. Spraying before that is ineffective as the bagworms are too well protected inside their silken homes.

No comments:

Post a Comment