Strainbeansucker

The strainbeansucker evolved from the uksip marfinnus. It lives like a leech on the giant strainbeans. With its long spike, it pierces the strainbean and gulps its blood, leaving a wound. Once a strainbean is pierced, the strainbeansucker never leaves it on its own, except for when the strainbean dies, but the lifespan of a strainbean is much longer than that of the strainbeansucker, so a few generations of strainbeansuckers will pass before the host dies. Sometimes, when a strainbeansucker can't find a strainbean, it attaches itself to other bigger animals. Because of their skin color, they're very hard to see on a strainbean.