The pilot, holder of a student pilot certificate, was landing a tailwheel-equipped airplane at the conclusion of a local area flight. He said he landed hard, the airplane bounced, and then ground looped to the left. The right main landing gear wheel rim was broken, and the right wingtip scraped the ground. The pilot said his total accrued flight time was about 55 hours, and he was uncertain if the airplane sustained any damage to the wing structure. One month later, an airplane mechanic notified the NTSB IIC, and reported that the right wing received damage to the wing spar.