Butternut Woollyworm Eriocampa juglandis (Fitch, 1857)  

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The Butternut Woollyworm uses Black Walnut and Butternut as host plants. It is reported that hickories are also sometimes used as host plants.

There are 12 records in the project database.

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A Butternut Woollyworm larva on Black Walnut in Howard Co., Maryland (9/10/2013). Richard states, "The Butternut Woolyworm (Eriocampa juglandis) is a sawfly (a wasp with caterpillar-like lava). The "naked larva" with the flock removed is pictured in the upper right hand corner." Photo by Richard Orr. (MBP list)

A Butternut Woollyworm in Baltimore Co., Maryland (8/26/2018). Photo by Ashley Bradford. (MBP list)

Butternut Woollyworm larvae in Howard Co., Maryland (9/10/2013). Photo by Bonnie Ott. (MBP list)

A Butternut Woollyworm in Howard Co., Maryland (8/10/2015). Richard notes, "The Butternut Woolyworm covers itself with long flocks of soft white material to protect it from parasitoids. The top of the photograph shows the Butternut Woolyworm after I cleaned off most of its white covering." Photo by Richard Orr. (MBP list)

A Butternut Woollyworm in Frederick Co., Maryland (7/9/2016). Photo by Bob Cammarata. (MBP list)

A Butternut Woollyworm in Montgomery Co., Maryland (9/9/2014). Photo by Bonnie Bell. (MBP list)

A Butternut Woollyworm in Baltimore Co., Maryland (8/8/2016). Photo by Rose Anderson. (MBP list)

Butternut Woollyworm in Worcester Co., Maryland (7/3/2017). Photo by Wayne Longbottom. (MBP list)

Butternut Woollyworms in Queen Anne's Co., Maryland (7/11/2015). Photo by Amanda Spears. (MBP list)


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