There is a recent posting on iNaturalist of a putative occurrence of Hemlock Wooly Adelgid (HWA), aka the Hemlock Vampires, in Hants Co.
If confirmed, the Hants Co. sighting would be the first outside of Digby, Queens, Shelburne, Yarmouth and Annapolis counties in SW Nova Scotia.
Regardless, please keep a watchful eye on hemlocks in the Sandy Lake (Bedford) area – in fact on all hemlocks in NS – and photograph and report anything that looks like HWA to the Canadian Food Inspection Agency &/or ISANS &/or Nova Scotia Lands and Forestry – Donna.Hurlburt@novascotia.ca (Wildlife Manager, Biodiversity)
For more about HWA, view
– CFIA: Hemlock woolly adelgid – Adelges tsugae (Annand)
including Questions and Answers: Hemlock Woolly Adelgid (Adelges tsugae) Detection in Nova Scotia
– New York State Hemlock Initiative
The page on HWA Phenology is particularly informative; good photos, info on life cycle (what happens when).