Hippodamia variegata - the Spotted Amber Ladybird or White Collared Ladybird.
Although a native of Europe, this is a very useful pest control agent. Tests have been carried out to determine the benefit of this species to the horticultural industry, particularly greenhouses, as a biological control for aphids, mites, thrips and whitefly.
These ones (and there were several) were on my parsley which, as you will note, is going to seed! :-)
I've set myself a task to search for and photograph other ladybird species in the garden this year.
(Click to enlarge)
Score-card so far:-
2 weeks ago