Spider / caterpillar / bee / wasp?

Spider / caterpillar / bee / wasp?

Observation - Spider / caterpillar / bee / wasp? - UK and Ireland. Description: In Amelanchier Canadensis, appears to be collection of skeletal leaves held together with fine web / silk. No others in this shrub or others in the garden.

In Amelanchier Canadensis, appears to be collection of skeletal leaves held together with fine web / silk. No others in this shrub or others in the garden.