Duvalia

Unlike other Plaga who burst from the neck, Duvalia Plagas will rip apart the host's entire upper body. They appear as shelled, flower-like parasites. Their weak point is the fleshy "tail" that hangs off their back (which is, in fact, the host's upper torso/ribcage), and the fleshy core of the shell, which is only exposed when the Duvalia is about to attack. In addition to these, and the usual weakness to bright light, Duvalia can be blown to pieces with a single hand grenade