https://www.fs.fed.us/foresthealth/technology/pdfs/HWA-FHTET-2014-05.pdf
https://www.fs.fed.us/foresthealth/technology/pdfs/FS_hwa.pdf
Black lady beetles is a little vague, but if you are referring to Sasajiscymnus tsugae than the USDA already tried that in 1995. They didn't establish too well...