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A Sawfly larva.
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Dec 11, 2018 16:09:32   #
relbugman Loc: MD/FL/CA/SC
 
I'll add a 'non-consensus' opinion, but one that is nor at all sure! I'd go with a moth larva rather than a Pierid, but can't suggest what. The general gestalt seems more mothy than butterfly'y. No rolling? No constructed hides? With piles of frass in the back? Don't know ... Agreed, not a sawfly. Nice shots.

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Dec 11, 2018 16:46:06   #
newtoyou Loc: Eastport
 
relbugman wrote:
I'll add a 'non-consensus' opinion, but one that is nor at all sure! I'd go with a moth larva rather than a Pierid, but can't suggest what. The general gestalt seems more mothy than butterfly'y. No rolling? No constructed hides? With piles of frass in the back? Don't know ... Agreed, not a sawfly. Nice shots.


Going by your post, I looked a bit deeper. Maybe Plutella xylostella? I also learned that this moth has only four larval instars, not the usual five.
Bill

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Dec 11, 2018 17:45:03   #
EnglishBrenda Loc: Kent, England
 
relbugman wrote:
I'll add a 'non-consensus' opinion, but one that is nor at all sure! I'd go with a moth larva rather than a Pierid, but can't suggest what. The general gestalt seems more mothy than butterfly'y. No rolling? No constructed hides? With piles of frass in the back? Don't know ... Agreed, not a sawfly. Nice shots.


Thank you for the imput. As an aside, I did find a Cabbage Moth caterpillar (Mamestra brassicae) on the same sprout with the usual pattern for this caterpillar.
Quick pic below.

I am thinking that the suggestion of Plutella xylostella moth is a good possibility, I have seen the adult moth (diamond-back moth) in the garden at times.


(Download)

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Dec 11, 2018 17:52:18   #
EnglishBrenda Loc: Kent, England
 
newtoyou wrote:
Going by your post, I looked a bit deeper. Maybe Plutella xylostella? I also learned that this moth has only four larval instars, not the usual five.
Bill


Bill thanks, I have looked on the web and I think you are probably right with Plutella zylostella, also I have seen the adult (Diamond back moth) in the garden at times, a very small moth and a difficult to photograph one. I haven't seen the caterpillar before though, at least I have noticed one.

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Dec 11, 2018 18:23:18   #
newtoyou Loc: Eastport
 
EnglishBrenda wrote:
Bill thanks, I have looked on the web and I think you are probably right with Plutella zylostella, also I have seen the adult (Diamond back moth) in the garden at times, a very small moth and a difficult to photograph one. I haven't seen the caterpillar before though, at least I have noticed one.


On the web?? It was in a spider web?
Bill😀

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Dec 11, 2018 18:30:40   #
EnglishBrenda Loc: Kent, England
 
newtoyou wrote:
On the web?? It was in a spider web?
Bill😀


ha ha, there were spiders on the plant, also small snails, a slug and a woodlouse. I love sprouts normally but not so keen on these homegrown ones.

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Dec 11, 2018 20:47:43   #
sippyjug104 Loc: Missouri
 
Brenda, another great image. I really like the control that you have over your lighting for it brings out the details with such clarity.

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Dec 11, 2018 23:58:06   #
newtoyou Loc: Eastport
 
EnglishBrenda wrote:
ha ha, there were spiders on the plant, also small snails, a slug and a woodlouse. I love sprouts normally but not so keen on these homegrown ones.


This is conjecture. The caterpillar feces induce fungi. The fungi, in their work, make a more nutritious food. The rots hasten the return of the plant to the nutrition cycle. There are many fungus feeding insects that are only found WITH THE FUNGUS. I have noticed that keeping a lot of greens clean in the garden that in spite of insects, no severe rot, less loss. Have a feeling I am off track. That is from 'scatology 101'. Brenda, thank you, for the post.
Goodnight all. Bill

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Dec 13, 2018 11:23:16   #
newtoyou Loc: Eastport
 
EnglishBrenda wrote:
I don't know which of the Sawfly larvae this is, any ideas anyone? I found it hiding in a Brussel sprout from the garden.


Well, we all had fun with that one. Identifying insects is not always easy. So as to not hijack, see my upcoming post to general photo.
Bill

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