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Helicoverpa armigera - With red poo Jeanette found this caterpillar on strawberries she bought at the supermarket.<br />
Here is the same animal a week later, feeding on cucumber and hence with green poo :o)<br />
<figure class="photo"><a href="https://www.jungledragon.com/image/85573/helicoverpa_armigera_-_with_green_poo.html" title="Helicoverpa armigera - With green poo"><img src="https://s3.amazonaws.com/media.jungledragon.com/images/3043/85573_thumb.jpg?AWSAccessKeyId=05GMT0V3GWVNE7GGM1R2&Expires=1596672010&Signature=g4IHO4WkkpKV47jMF2HtDw%2BCqm4%3D" width="200" height="114" alt="Helicoverpa armigera - With green poo The green poo seems to be &quot;normal&quot;, although in other caterpillars it is often blackish-brown. The youngster in this image had been feeding on cucumber and salad for a week, but was originally found on strawberries. Below is the same animal a week earlier, feeding on strawberry and (hence?!) with red poo :o)<br />
https://www.jungledragon.com/image/85572/helicoverpa_armigera_-_with_red_poo.html Caterpillar,Cotton bollworm,Helicoverpa,Helicoverpa armigera,Heliothinae,Lepidoptera,Noctuidae,Noctuoidea,nl: Katoendaguil" /></a></figure> Caterpillar,Cotton bollworm,Helicoverpa,Helicoverpa armigera,Heliothinae,Lepidoptera,Noctuidae,Noctuoidea,nl: Katoendaguil Click/tap to enlarge PromotedCountry intro

Helicoverpa armigera - With red poo

Jeanette found this caterpillar on strawberries she bought at the supermarket.
Here is the same animal a week later, feeding on cucumber and hence with green poo :o)

Helicoverpa armigera - With green poo The green poo seems to be "normal", although in other caterpillars it is often blackish-brown. The youngster in this image had been feeding on cucumber and salad for a week, but was originally found on strawberries. Below is the same animal a week earlier, feeding on strawberry and (hence?!) with red poo :o)<br />
https://www.jungledragon.com/image/85572/helicoverpa_armigera_-_with_red_poo.html Caterpillar,Cotton bollworm,Helicoverpa,Helicoverpa armigera,Heliothinae,Lepidoptera,Noctuidae,Noctuoidea,nl: Katoendaguil

    comments (6)

  1. That is soooo cool! I never imagined it's frass would be such a color! Talk about a simple digestive system! Posted 9 months ago
    1. A while back I noticed that a Green Stinkbug (Palomena prasina) had a conspicuously pink belly and it was feeding on red/purple berries. We had a discussion about that (the food influencing the colour of the animal) that came up inconclusive, but I still like to think it was the reason for the pink cuticula. If you look closely here, the younger caterpillar on strawberry also has a more reddish hue to it and after feeding on cucumber and salad for a week it is distinctly greener ... I won't go there with these two images as there will also certainly be a "normal" difference in colouring between states or stages of development, but it is something I couldn't help noticing after picking up on the colour of the droppings. Posted 9 months ago, modified 9 months ago
      1. p.s. Dug it up ... :o)
        Palomena prasina with berry-belly(?) Inspired by a comment exchange with Christine I dug up some old images of a discussion about food possibly influencing the colour on the belly of this Green shield bug. I'm a bit dismayed at the poor quality of the old photos (all between 2006-2008), but they still show the cause for discussion/doubt, so hey ...<br />
<br />
When I found this here bug (photograph above), I was convinced the pink belly would have been caused by the diet of reddish-purple berries it was sitting on. The colours just seem to match perfectly.<br />
<br />
This image was taken on September 3rd. We had a short discussion on this on waarneming.nl (a Dutch biodiversity platform) and it was suggested that the colour could very well be "just" the beginning of this animal's change to winter colours.<br />
Indeed, in this process the belly usually seems to "go" first with many brown "freckles" appearing, just around the same time in September. To illustrate this, here are two images of September 10th and 18th both from a different location than the one above, where there are no red berries present, so in this case the colour is the onset of winter colouring, I'm sure.<br />
<br />
September 10th, this one is already changing to winter dress:<br />
https://www.jungledragon.com/image/85623/palomena_prasina_-_september_w_brown_belly.html<br />
<br />
September 18th, this one is still celebrating summer:<br />
https://www.jungledragon.com/image/85625/palomena_prasina_-_september_w_green_belly.html<br />
<br />
Just for comparison, here is a collage of "full" winter colours, taken in France in February:<br />
https://www.jungledragon.com/image/85624/palomena_prasina_-_winter_dress.html<br />
<br />
All in all, I still think the pink on the first image matches too darn well with the berries, but given that this was in September and these critters do start getting brownish speckled bellies around that time I can't be sure ... possibly still a combination of the two?!? Carpocorini,Green shield bug,Heteroptera,Palomena,Palomena prasina,Pentatomidae,Pentatominae,Pentatomoidea,nl: Groene Schildwants
        Posted 9 months ago
        1. That's really neat! Posted 9 months ago
  2. Wow, funny! I like it! Posted 9 months ago
    1. Yes, it's the reason for posting these - I only noticed it consciously while cropping the images :o) Posted 9 months ago

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The cotton bollworm, corn earworm or Old World bollworm, ''Helicoverpa armigera'', is a moth, the larvae of which feed on a wide range of plants, including many important cultivated crops. It is a major pest in cotton and one of the most polyphagous and cosmopolitan pest species. It should not be confused with the similarly named, related species ''Helicoverpa zea''.

Similar species: Moths And Butterflies
Species identified by Pudding4brains
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By Pudding4brains

Public Domain
Uploaded Oct 11, 2019.