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What is on my tomato plant?

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tehamamama Oct 5, 2012 10:52 AM

Some of the little black dots are very shiny and perfectly round. I would swear they are a tiny beetle but even at 30x magnification it's hard to tell. Most of the dots are less shiny, less round, almost look like very small tomato worm feces. I'm at a loss! What is eating my plant??

The underside of the leaf appears nearly pristine and very clean. There are a few shinier dots/beetles.

 
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  1. raytamsgv RE: tehamamama Oct 11, 2012 02:04 PM

    Could it be flea beetles?
    http://www.ext.colostate.edu/pubs/ins...

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    1. re: raytamsgv
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      tehamamama RE: raytamsgv Oct 11, 2012 05:34 PM

      I don't think so. They don't move when disturbed, are very circular as opposed to oval and there are no holes in the leaves. They look more like extremely small leafminer tunnels. I can't even see them distinctly at 30X magnification which I think is much smaller than a flea beetle. That was my first thought when I saw them, too.

    2. BeefeaterRocks RE: tehamamama Oct 16, 2012 12:13 PM

      I think it is some kind of caterpillar excrement, especially since the leaves look like they have been nibbled on.

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        LanaD RE: tehamamama Oct 25, 2012 03:12 PM

        This looks more like a disease or mineral deficiency rather than an insect. The leaves are a little chlorotic too. I stink at diagnosing but if the spots get bigger it might be bacterial speck.

        1. EWSflash RE: tehamamama Oct 27, 2012 07:48 PM

          3D black dots are nearly always insect droppings. I want to say they're ALWAYS insect droppings but could be space dust, I imagine.

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