A List of Resources compiled by David Bock
LACBA Beekeeping 101
https://www.losangelescountybeekeepers.com/beekeeping-class-101
Beekeeping Legalized in LA
(a) The person who is the owner of or in possession of an apiary is registered as a beekeeper with the County of Los Angeles Agricultural Commission.
(b) The number of hives is limited to one for every 2,500 square feet of lot area.
(c) Hives are not located in the required front yard of a lot, including through lots.
(d) Hives are located a minimum of five feet from the front, side, and rear lot lines and a minimum of 20 feet from public rights-of-way or private streets
LA City Beekeeping Ordinance (Muni Code)
While non-native honey bees (Apis mellifera) are common in many gardens, numerous California native bee species also visit urban ornamental flowers. Of about 4,000 bee species known in the entire United States, about 1,600 have been recorded in California.
Alarm pheromone
One is released by the Koschevnikov gland, near the sting shaft, and consists of more than 40 chemical compounds, including isopentyl acetate (IPA), butyl acetate, 1-hexanol, n-butanol, 1-octanol, hexyl acetate, octyl acetate, n-pentyl acetate and 2-nonanol.
Honey bee pheromones (wikipedia)
More details about pheromones
More about pheromones (National Center for Biotechnology Information)