Can anyone tell me what these might be?

Can anyone tell me what these might be?

Observation - Can anyone tell me what these might be? - UK and Ireland. Description: The large object in the first photo is a grain of rice. The caterpillars were seven feet up on a sunny wall inside the house and had been there in the same configuration for several days. Only realised they were alive when I decided to clean the mark of

The large object in the first photo is a grain of rice. The "caterpillars" were seven feet up on a sunny wall inside the house and had been there in the same configuration for several days. Only realised they were alive when I decided to clean the mark off the wall:)