Group locomotion
Hi,
I saw this on the western andean slopes in Ecuador – fascinating! But what is it?
Thanks,
Hugh

Hi Hugh,
Caterpillars that move in this manner are generally referred to as Army Worms. They travel in a mass to the next source of food.

Update:  March 26, 2016
We just received a comment indicating these look more like Sawfly larvae.  Looking closely at this nine year old posting, and considering what we have learned since then, we are in agreement.

Location: Ecuador

3 Responses to Army Worms in Ecuador probably Sawflies

  1. Bill Gerth says:

    Hi folks,

    Those actually look a bit like sawfly larvae rather than caterpillars. It’s hard to tell with the photo resolution, but there are some social sawflies that move in groups like this…
    Cheers,
    Bill

    • bugman says:

      Thanks for providing a correction on this nine year old posting. Looking closely, we believe you are correct. We have updated the posting.

  2. Bill Gerth says:

    Hi folks,

    Those actually look a bit like sawfly larvae rather than caterpillars. It’s hard to tell with the photo resolution, but there are some social sawflies that move in groups like this…
    Cheers,
    Bill

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