Went out to collect some bees crawling around the ground infront of the hives today. I was surprised that I didn’t find many at all, less than a dozen, but in the Fall I saw a lot more. Could have been that the 3 hives I lost here were the ones heavily infested by the parasitic flies or mites or whatever else. I’ll still wait a few weeks to see if I find any Apocephalus borealis from these samples I’ve collected in vials.
Note: Lothar in Los Gatos have found these parasitic flies in his apiary. Thought to have brought them to his yard through a bumble bees hive he relocated there.
Also, study has shown that these flies are localized and won’t be spreading like wildfire, at least that’s what we hope!