cloaking & ranged attacks

if a banespider is cloaked, and he does a ranged attack, does he still get a critical?

Been a while since I've played my bane but if I remember correctly they only get crits with the mace melee attacks (bash, pulverize, shatter and crowd control). All single target mace attacks have a 100% crit rate from hide, CC has a 50% because it's a melee AE. And sadly shatter armor from the mace patron pool does not crit from hide =(

I can see the confusion as stalkers can crit from hide with impale, focus etc and even have their patron ranged attacks flagged for crits.

None of the ranged attacks available to Banes can critical. All primary powerset melee attacks can, assuming you mean the player version.

The wiki article on Banes gives more info.