Attached to a brick in the garden I found a yellowish protuberance about the
size of a grape. I thought it must be something which had blown down from
one of the nearby trees.
When I disturbed it, however, to my amazement it became clear that it was
actually a clump of extremely small spider-like creatures. Each was fairly
bright yellow with a dark dot visible at one end.

Anyone got a clue exactly what they might be?

Julia P