fungus or web on crab apple tree

fungus or web on crab apple tree

Observation - fungus or web on crab apple tree - UK and Ireland. Description: This appeared all over my crab apple tree, but not on the adjacent cherry and rowan trees, nor on th

This appeared all over my crab apple tree, but not on the adjacent cherry and rowan trees, nor on the apple and pear trees elsewhere in the garden. At first I thought it must be some kind of fungus, but when I wiped a piece with my finger, I saw what looked like blood, as if the substance contained tiny eggs or creatures of some kind. There is no discernible movement.