It started out as white spots on some, not all of the leaves of my tomato plants. It's still only on parts of the plants, not all. They're still producing well, and the fruit is perfect. Someone told me it was aphids, and that spraying soapy water would help. However, I saw some other little bitty brown beetles out there, too. I tried in vain to find a pic of them online, and now that I've located my camera, can't find a beetle. I just want to know what this is, and how to handle it.

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