NO SPRAY control of blackflies aphids

Earlier this summer my beans were affected by blackflies and they were left well alone.  7-spot' and Harlequin ladybirds moved in and the aphids have been controlled highly effectively: with NO spraying.

Furthermore, this Harlequin ladybird larva has now turned into a chrysalis,   
These will emerge as adults soon further protecting our beans from aphids.  More at https://www.nhm.ac.uk/discover/why-harlequin-ladybirds-are-invading-our-homes.html?gclid=CjwKCAjw1K75BRAEEiwAd41h1NzpWXGA0Wh1dfL9-QOapnrT9xZjJ62PJEyyJe8SZH4-8z1rpN3OLxoC_YYQAvD_BwE and

https://www.buglife.org.uk/bugs/bug-directory/harlequin-ladybird/