arl-2 is an other name for arl-5. However, both arl-2 and arl-5 are also 'other names' for evl-20 [030116 ck1].
Map position created from combination of previous interpolated map position (based on known location of sequence) and allele information. Therefore this is not a genetic map position based on recombination frequencies or genetic experiments. This was done on advice of the CGC.