Chtonobdella fallax
Chtonobdella fallax is a species of leeches belonging to the family Haemadipsidae; also known by its synonym Malagabdella fallax and having originally been placed in the related jawed land leech genus Haemadipsa by Raphaël Blanchard in 1917. It is a relatively common species in the tropical forests of Madagascar.
C. fallax is notable in that video evidence was provided by Mai Fahmy and Michael Tessler of this species gathering energy and springing off a leaf, resolving a long-standing debate about whether or not leeches could jump.