Recently bought a new Alocasia which I only just managed to identify. The nursery couldn't identify the species but said it was an old one that had been very common many years ago but had tended to disappear in more recent times. It's a New Guinea species, A.lauterbachiana. Apparently previously was in the genus Xenophya but later moved to Alocasia.
The leaves look a lot like my Philodendron cv Henderson's Pride. However, the Philo. stem is starting to creep along the ground whereas the Alocasia has an upright stem.