Barberry Has Light Tan Specks On Leaves. Some Straight Line Also

Question

I found lady bug larvae on bush. Found that they weren’t the issue. Bush isn’t as full as others.

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Answer 1

It looks like insect damage, possibly from aphids. Try spraying the leaves above and below with Neem oil once a week till it improves. Here is more:

https://hgic.clemson.edu/factsheet/barberry/

https://www.gardeningknowhow.com/ornamental/shrubs/barberry/barberry-shrub-care-tips.htm