We report the joint WASP/KELT discovery of WASP-167b/KELT-13b , a transiting hot Jupiter with a 2.02-d orbit around a V = 10.5 , F1V star with [ Fe/H ] = 0.1 \pm 0.1 .
The 1.5 R _ { Jup } planet was confirmed by Doppler tomography of the stellar line profiles during transit .
We place a limit of < 8 M _ { Jup } on its mass .
The planet is in a retrograde orbit with a sky-projected spin–orbit angle of \lambda = -165 ^ { \circ } \pm 5 ^ { \circ } .
This is in agreement with the known tendency for orbits around hotter stars to be more likely to be misaligned .
WASP-167/KELT-13 is one of the few systems where the stellar rotation period is less than the planetary orbital period .
We find evidence of non-radial stellar pulsations in the host star , making it a \delta -Scuti or \gamma -Dor variable .
The similarity to WASP-33 , a previously known hot-Jupiter host with pulsations , adds to the suggestion that close-in planets might be able to excite stellar pulsations .