Pest Cocoon? atop a carrot?

Hi
Looking among my carrot plants today I came across a cocoon type of thing fixed to the top of two carrot plants. It's roughly the size & shape (flat surfaces) of a Brazil nut in its shell.

Visually it looks like it is made from big leaves that've been formed & glued, but it looks like the carrot leaves have been utilised instead.

Anyone any idea what is inside of it? It feels relatively heavy imho.

 

Hi Could be a catipillar or a spiders nest of eggs

 

It looks like a bagworm.

Psyche casta - UKMoths

I hadn't realised we had them here in Britain. My son lives in America and had a plague of them in his garden last year. A different type of moth there but the bagworms were very destructive, destroying two or three of his conifers (which is their preference) within a couple of days. Of course I'm not saying those here in Britain will do the same, it's unlikely.

This is the type my son had. They look like pine cones so he didn't spot them until the damage was done. He removed what he could and burnt them.

 

Cor blimey... grow a plant and get an education! It's like I've hung a "free eats" sign out as everything wants to eat what I'm growing!!! ;-)

Sheal, I'm not convinced it is a bagworm moth as this thing is incorporated into the carrot stems, not hung from them.

My best

 

@Green Knees - why not open it up and inspect the contents? It's a pest if it's on carrots, so you need to know...

 

That's okay, I thought that forewarned is forearmed.

Good idea.

 

You know Caroline, the older I get the more "live and let live" I become. I think the ethos is Buddhism? were one doesn't kill anything, hence why would I destroy a creatures bedroom when it's getting changed?

If I remember my school biology right, this is probably a caterpillar who's now about to grow some wings whence it will emerge and go and be someone elses problem?

P. S. I've just gathered all my caterpillars in a tub with some leaves (it took a while) and I released them on some wasteground on the most diverse plants & brambles there. My thinking was they might find something they'd live on.

 

Found a second. To look at they are like an "inflated bag" sort of thing.
All joking aside, I'd be surprised if this was a caterpillar chrysalis as none of my carrot foliage was ate

 

Hi, i'm not sure why I gave you a "funny"? Probably a case of wide fingers pressing small icons, so have a "useful" instead. ;-)

From my searching online, Tussock Moth caterpillars form similar-looking cocoons.



P.S. ... and something was eating the carrot foliage.

Later edit:
And here's the cause :



About 6 days ago I cut into all 3 cocoons and gathered the 2 chrysalis in a little tub with tissue around them, one cocoon was empty. I thought they were dead as they'd taken on an almost black colour, but I put them under cover in a propagating tent in the yard.

Well everytime I went in the yard i checked on them and then I got worried they'd hatch and maybe get trapped, and as the night's have got the first nip of winter, I brought them on the kitchen windowsill to give them a better chance.
Making a brew an hour ago and I thought "what the beep is that?" It looked like a black leaf on the side of the tub.
I think it hatched dark and has 'dried out' into it's light camouflage colours. It's now among the daisys on the wall in the sun. When No1 flies I'll bring No2 back in.
Feel like a proud dad to be honest!

I'm now pretty sure it's one of the tussock moths... or if could be a tortix?

 

Imagine that as an adult flying amongst your begonias!