Which insect is this ?

[zigzag_wanderer]

Hi All,

Saw this one whilst out and about last Sunday.

Single small brown/yellow grub in a golden woven mesh cocoon on underside of a blade of grass. The caterpillar was still in wriggle mode, maybe still creating the cocoon ?

Beautiful structure - probably very common, but don't think I've ever seen it before.

Cheers in advance if anyone can put me straight on this.

[bugboy]

Can't be more accurate than to suggest, based on the pics and your description, a larvae (perhaps a moth caterpillar) spinning its cocoon ready for pupation.

[zigzag_wanderer]

Cheers for that bugboy (as always).

It was from my local field, and I've a decent idea where it was, so I might try and see how it's doing now.

I was very taken by how golden the thread was. I think the glorious sunshine helped.