Please ID The Pest Responsible For The Blueberry Leaf Damage In Your Illustration

Question

On your web page https://www.gardeningknowhow.com/edible/fruits/blueberries/how-to-control-blueberry-pests.htm, there’s a picture of partially eaten blueberry leaves, but it doesn’t match the descriptions of damage by any of the listed pests (although it does match the damage to my blueberries). What caused that damage?

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Answer 1

I thought at first it was leaf miner damage, but after doing research, it may be Septoria leaf spot. The diseased spots may fall out. Here is more:

https://content.ces.ncsu.edu/leaf-diseases-of-blueberry

https://www.gardeningknowhow.com/edible/fruits/blueberries/treating-blueberries-with-septoria.htm

Since it was so difficult to find an authoritative reference with photos that look like this, you may want to verify the diagnosis with your local cooperative extension agent.