This is a Dutch cultivar introduced about 2008,
probably another cross or mutation of A. longiloba.
Bloemenbureau Holland mentions this plant as 'Bambino Narrow'.
with Alocasia 'Polly'.
photo (1-3) © Robert Leszczynski, 2010
Groen.net: Alocasia 'Bambino Arrow'
Fresh Market: Alocasia: 'Bambino Arrow'
Tuinadvies: Alocasia 'Bambino Arrow'
The Master Florist: Alocasia 'Bambino Arrow'