Torn ampullaria leaves

[tzestan]

This is one of my ampullaria.
I am wondering about the cause to its torn leaves.
From the photo, 3 new leaves and its shoot have dead tissues.
As the leaves expand, they look like eaten by bugs. But I don't think bug attack is the cause.
There is another pot of ampullaria next to this one. That one seems fine.
Other than aesthetically unappealing, the plant looks healthy pitchering.
Any suggestions on how to solve this?

[sooxiwei]

same thing happens to one of my n. rafflesiana, but only to one particularly leaf where it ends up failing to pitcher, for mine, caused by slugs/snails, they attack on the very early stage when the new leafs is emerging...

[rhealk]

Looks like chewed by something. Some of my neps have leaves chewed by jap weevils (or at least they looked like it) before it's fully formed, while they're still tender and soft (sounds yummy). After the leaves fully grown, they have all type of weird looking damages / holes. Sometimes the wound get some infection and rot a bit.

Maybe you can find the culprit if you randomly check on your plants in the afternoon and evening. After found the culprit, you'll have enjoyable time putting it into the pitcher or VFT.

Just to share my experience (and cruelness)

[piscesilim]

Most probably catepillar. Check if got caterpillar droppings around.

[Vincent]

its a bug. most likely a caterpillar, since they like the taste of new foliage. To prevent caterpillars and slugs, fill your water tray till there is just enough to cover the bottom. If its flying insects, i’d suggest an insecticide, but u prolly cant cant the stuff i know of.

[Angkau Tekor]

I think most probably grasshopper. Caught a few chomping on my neps leaves before.

[NepNut]

Caused by insects (black round catepillar that only comes out at night)... this problem usually will happen more frequent during rainy season. Check for a droppings just beside the chewed area (long strings).

[kentosaurs]

I realise when you damage the leaf while its still small and growing...Just a small damage will turn into a big hole when the leaf is fully grown..

[weeps]

Mine having same problem, either caterpillar or grasshopper, you got to look around and catch. Usually if you have "Limau" "CNY Limau" they will come.

[tzestan]

It does look like pest problem. That was what I initially suspect.
I check it every night. There is no trace of worm/caterpillar/snail/slug. They usually produce droppings or slime nearby as pointed out by many. Grasshoppers are not too picky when eating. Old leaves are as tasty as new one for them. A note is that, another amp next to it is fine. So, I kind of rule out pest problem.

Dead tissues start appearing on new shoot. It does not look chewed but appear burnt. As the leaf expands, dead spots fail to form leaf.

After some thoughts, could it be overfed? I feed it frozen bloodworms. A few worms once a week in one pitcher. Every leaf is progressively bigger. The other amp has small pitchers. So, no feeding. That seems to be the only different. Yes, I know amp is supposed to be vegetarian... I am not sure if anyone feed/fertilize amp has plant matching this symptom?

I'll stop feeding and continue to look for pests. Thanks.