Table 1.

Source locations (decimal degrees), mean summer temperatures (WorldClim, Hijmans et al. 2005) at source locations, and number of colonies placed into three growth chamber temperature treatments from each species

			Rearing temperature (# colonies)
Species	Source locations (decimal degrees)	Mean summer temperature (°C)	21°C	26°C	31°C
Aphaenogaster rudis	33.63°, −91.79°	26.1	1	2	2
	35.78°, −78.80°	24.8	0	1	0
	36.04°, −79.07°	24.1	5	4	5
	39.89°, −74.58°	22.3	0	1	0
	40.02°, −83.01°	22.1	0	0	1
	42.53°, −72.19°	18.5	4	4	4
Temnothorax curvispinosus	35.76°, −78.68°	24.8	12	11	12
	38.57°, −77.37°	23.7	0	1	1
	39.64°, −74.66°	22.6	0	0	1
	40.44°, −74.27°	22.4	1	1	1
	41.84°, −70.67°	20.4	2	2	3
	42.35°, −72.19°	18.5	2	2	2
Aphaenogaster carolinenesis	35.78°, −78.68°	24.7	0	0	1
	38.51°, −90.83°	23.8	0	0	1
Aphaenogaster fulva	38.51°, −90.83°	23.8	1	1	1
Camponotus chromaiodes	38.51°, −90.83°	23.8	0	1	1
Crematogaster lineolata	36.04°, −79.07°	24.1	0	1	1
	40.58°, −76.75°	21.2	0	1	1
	42.53°, −72.19°	18.5	0	1	0
Tapinoma sessile	38.51°, −90.83°	23.8	0	0	1
	40.02°, −83.01°	22.1	1	1	2
Temnothorax longispinosus	42.53°, −72.19°	18.5	2	1	2

For species × sampling locations with fewer than three colonies, priority was given to the intermediate (26°C) and warmest (31°C) temperature treatments. Black text indicates focal species; nonfocal species are gray.