Larvae have been recorded feeding on bracket fungus (including Piptoporus betulinus) and dead wood.
But all these names had been used before – J.N.C.M. Denis & I. Schiffermüller had described a T. laterella in 1775 (a concealer moth, now known as Agonopterix laterella), C.A. Clerck a T. picarella as early as 1759 (now Nemapogon picarella), and F.P. von Schrank a T. arcuatella in 1802 (probably a junior synonym of the arctiid moth Dysauxes ancilla).