Subject: Ascalapha (Probrably)
Location: South of Brazil
November 7, 2016 7:38 am
Every year, these caterpillars came and use to stay in different species of trees. The most commum tree is the Prunus selowii. They use to stay in a big group , normally .8 m to 1,0 abovo the ground. They are very predate by hemiptera insesct, as you can see in the picture.
Totally inofensive, I means, they don´t provoque any irritation in the skin when manipulate.
Signature: Wilsonpni

Possibly Morpho Caterpillars

Giant Silkmoth Caterpillars

Dear Wilsonpni,
Though your caterpillars resemble the caterpillar of a Black Witch,
Ascalapha odorata, based on this BugGuide image, we do not believe that is a correct identification.  We are pretty certain Black Witch Caterpillars do not feed in such aggregations.  Though the color is different, your caterpillars remind us of Morpho Caterpillars from our archives.  We will contact Keith Wolfe to get his opinion.  The image of the Predatory Stink Bug nymph feeding on a Caterpillar is a nice addition to our Food Chain tag.

Olá Daniel,
Nope, sorry, these are moth caterpillars, those of Morpho appearing distinctly different.

Aggregation of possibly Morpho Caterpillars

Aggregation of probably Giant Silkmoth Caterpillars

Update:  November 8, 2016
Thanks to a comment from contributor Cesar Crash of Insetologia, we now believe these are Giant Silkmoth Caterpillars from the genus

Predatory Stink Bug preys on Caterpillar

Predatory Stink Bug preys on Caterpillar

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3 Responses to Probably Giant Silkmoth Caterpillars in the genus Arsenura from Brazil

  1. Cesar Crash says:

    Daniel, I recieved simmilar images and my opinion was Arsenura. I dunno if it’s correct, but it must be some kinda moth, cause there are some cocoons in our images:

  2. Curious Girl says:

    Does a caterpillar that large survive being lunch by a little bug like that?

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