You might not want to trap them. Being in Texas you are in AHB country. Bees are getter hotter just by being near the tree sounds like AHB trait. You might want to just kill them. Spray them with soapy water to kill them and not destroy the comb in the tree. Perhaps a new swarm will take up home there and be nicer bees to trap out.
Speaking of trapping out.... if these are AHB bees then every bee you trap out will be AHB. The hive they go into will be AHB. To get them changed over you would have to put in a mated queen to guarentee that the queen will not be AHB. Don't know much about acceptance of queens to AHBs. But I would assume that it would take some time for them to accept her. Probably would have to spray whole hive with SW mixed with lemon grass oil over a period of time before letter her out.
Speaking of trapping out.... if these are AHB bees then every bee you trap out will be AHB. The hive they go into will be AHB. To get them changed over you would have to put in a mated queen to guarentee that the queen will not be AHB. Don't know much about acceptance of queens to AHBs. But I would assume that it would take some time for them to accept her. Probably would have to spray whole hive with SW mixed with lemon grass oil over a period of time before letter her out.