The citizen cavalry was good-quality cavalry levied among the rich citizens of Carthage. Hannibal didn't bring many to Italy but they fought in a number of other engagements throughout Carthage's history.
The citizen cavalry of Carthage, bearing banners with the city's Palm-and-horse emblem as well as banners of religious significance. The spear-armed phalanx to their rear is made up of subject Libyan spearmen, and the lighter infantry are allied Iberians.