**_“Scorpions on a Plane” five years before “Snakes on a Plane”_** Passengers & crew on a flight from Melbourne to Los Angeles have to contend with mutated scorpions inadvertently released from the cargo bay. “Tail Sting” (2001) is an amusing creature feature on a direct-to-video budget. Armchair critics write it off as cheesy low-budget monster dreck and, I suppose, that’s what it is. But at least it’s legitimately funny in a droll way. The female cast is okay with Laura Putney (Jennifer), Shirly Brener (Shannon) and Tara Price (Courtney). They coulda been utilized better. The setting is…