Menapis Tigerwing 
Menelaus Morpho 
Mesentina sister 
Mexican Bluewing 
Mexican Fritillary 
Mexican Longwing 
Mexican silverspot 
Microtia (butterfly) 
Milberts Tortoiseshell 
Mimic Phantom 
Monarch butterfly 
Morpho uraneis 
Mottled-green Nymph 
Mourning Cloak 
Mycalesis ita 
Mycalesis janardana sagittigera 
Mycalesis messene 
Mycalesis perseus acarya 
Mycalesis pitana 
Mycalesis sudra 
Mycalesis tagala 
Mygona prochyta 
Mylitta Crescent 
Napeogenes inachia