What's that triangular purple box hanging in trees?

It's all about EAB, or Emerald Ash Borer (Agrilus planipennis), a ruthless insect invader from eastern Russia, northern China, Japan, and Korea.  How did it get here?  It's not clearly known, but it is likely that it came in ash wood used for stabilizing cargo in ships or for crating consumer products. 


Recently, an EAB trap was put in an ash tree across the street from our offices at the Old Port park.

EAB is a wood boring beetle first found in SE Michigan nine years ago.  Ever since, it has been detected in southern Prince George's County, Maryland; Indiana, Illinois, Pennsylvania, Virginia, West Virginia, and other states.  EAB is a serious pest to the ash trees as the adult beetles feed on the tree's foliage and the larvae, the most harmful life stage, feed on the inner bark of the trees creating S-shaped tunnels that damage the vascular tissues under the bark.  Of course the ash trees then die. 

The purple boxes you see in many trees throughout the state are traps set in ash trees to attract and catch the beetles.  These traps are set by the Maryland Department of Agriculture (MDA) as part of a national survey for the emerald ash borer.  People should not be worried about these traps and should actually not disturb them since this is part of a major effort to detect this pest and to save our ash trees!  Read more at the EAB website.

Comments

RE: purple boxes

You are welcome!

Purple boxes

Recently have seen lots of these in our area of Western Kentucky. I finally had to Google them and find out what they were. This was useful, thank you.

Reply to comment | anacostiaws.org

I was suggwsted this website by my cousin. I am not sure whether thiks post is written by him as no onee else know suuch detailed abbout my problem. You are incredible! Thanks!

RE: Purple boxes

You are very welcome!  It really is an important effort to manage one of the worst invaders in the country.

Reply to comment | anacostiaws.org

You're so interesting! I do not think I've read through a single thing like this before. So wonderful to find somebody with a few unique thoughts on this subject matter. Really.. thank you for starting this up. This web site is one thing that is required on the web, someone with some originality!

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