DNR - Entomology Weekly Review, Aug. 4


Weekly Review for Aug. 4, 2020

This informal report by the Division of Entomology and Plant Pathology is designed to update the Nursery and Greenhouse industry of insect and disease pests the Division has been encountering on a week to week basis and as a way to give a “heads up” of things to be on the lookout for. Comments and questions about this report are welcome and can be sent to your respective Inspector.

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Ren Hall (Nursery Inspector & Compliance Officer) RHall@dnr.IN.gov

Last week I found a heavy infestation of galls produced by cypress twig gall midges on bald cypress trees in Tippecanoe County. I’m including a picture of a bald cypress cone to show the difference between these and the galls produced by the midge. The galls house the larval midges which can be seen if the gall is cut open.

I also found tulip tree scale insects on tulip trees at a nursery in Tippecanoe County. In addition to the scale insects themselves there was also black sooty mold and honeydew on the leaves and bark of the tree and ants crawling all over, which are other signs that scale insects or other honeydew-producers are present.


Eric Biddinger (Nursery Inspector & Compliance Officer) - EBiddinger@dnr.IN.gov 

Tar spot is coming along on some of the red and Norway maples. There’s a lot of difference between cultivars in susceptibility. I can find Japanese beetle damage when I look for it, but the populations were way down, even for nurseries that traditionally have issues. Frost damage is still apparent on many species. It is important to remember how hard some of these plants were hit when diagnosing injuries three to four months later. We often only look at things once per year. It is easy to miss the progression of symptoms or the remarkable amount of recovery that can occur in a single growing season.

Angela Rust (Nursery Inspector & Compliance Officer) - ARust@dnr.IN.gov


No reports this week

Megan Abraham (Division Director & State Entomologist) - MAbraham@dnr.IN.gov

Eric Bitner (Nursery Inspector & Compliance Officer) - EBitner@dnr.IN.gov

Kallie Bontrager (Nursery Inspector & Compliance Officer) - KBontrager@dnr.IN.gov

Vince Burkle (Nursery Inspector & Compliance Officer) - VBurkle@dnr.IN.gov

Ken Cote (Nursery Inspector & Compliance Officer) - KCote@dnr.IN.gov

Phil Marshall (State Forest Health Specialist) - PMarshall@dnr.IN.gov

Kathleen Prough (Chief Apiary Inspector) - KPrough@dnr.IN.gov

Jared Spokowsky (Nursery Inspetor & Compliance Officer)Jspokowsky@dnr.IN.gov

Kristy Stultz (Nursery Inspector & Compliance Officer) - KStultz@dnr.IN.gov

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