Metallolophia vitticosta 
Metardaris cosinga 
Metoeca 
Meton Hairstreak 
Mevania Eyed-Metalmark 
Mexican Bluewing 
Mexican Dartwhite 
Mexican Fritillary 
Mexican Longwing 
Mexican silverspot 
Mexican Umber Skipper 
Micraeschus elataria 
Micrelephas crassipalpis 
Micrelephas pseudokadenii 
Microblepsis leucosticta 
Microcrambus meretricella 
Microcrambus minor 
Microdes squamulata 
Micromonodes semiluna 
Micronia aculeata 
Microsca paullula 
Microtia (butterfly) 
Microxydia fulvicolli 
Microxydia orsitaria