The ants are usually active between March and October and can be seen climbing trees where they collect honeydew produced by aphids.
The mold fungus thrives on the honeydew excreted by the insects.
At the same time they secrete honeydew, leaving a sticky residue on plants.
The sticky honeydew excreted by the aphid makes hedge trimming a messy task.
Best enjoyed, IMHO, with honeydew melon, white cheese and a nice bit of fish.
Trails lead to, and ascend, nearby trees where the workers collect honeydew from aphids.