What bug did this?

[Peasgood]

Several small parcels of something wrapped incredibly neatly in an individual leaf. I am guessing they are apple leaves from their appearance, the wood is Leylandii in my woodpile.

The three sections in the pic are about the size of my little finger but a bit thinner.

I have some potted apple trees nearby and earlier in the year I was trying to figure out what was eating the leaves. Something was biting them off but there was no sign of any caterpillars, at least finding this explains that one.

 

[David Humphries]

No idea, but pretty interesting ecology.

Hopefully someone will have a pointer. Thanks for posting.

[Paul in the woods]

At a guess it'll be some sort of leaf cutter bee. I've had a few make their home in the cool green house this year, I often see them flying about with a bit of leaf and see neat holes cut in the edges leaves.

[Shaunpaul]

As above, I'd say leaf cutter bee. There will be individual segments within that leaf tube with an egg in each that will grow into a larva then a bee. Pretty amazing how a tiny bee makes this.

Oh, and they don't like wood burners  

[Peasgood]

Thanks for that, it's amazing what they have made and something I have never seen before.

There are some pretty cool videos on Youtube of them in action and the good news is the pupate in autumn and hibernate over winter as adults so they are safe from the woodburner (unless they are hiding somewhere else in my logs)