devil’s coachhorse—any of several rove beetles of the family Staphylinid:
- This atrocious tale of lies turned up joint by joint before her like a devil’s coach-horse.
devil’s horse—praying mantis of the family Mantid (an insect that feeds upon other insects and is harmless to man):
- Another of the most peculiar and interesting insects in Texas is called the “devil’s horse.”